Articles | Volume 12, issue 4
https://doi.org/10.5194/acp-12-1923-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-12-1923-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
17 Feb 2012
Research article |
| 17 Feb 2012
Coupling processes and exchange of energy and reactive and non-reactive trace gases at a forest site – results of the EGER experiment
T. Foken
University of Bayreuth, Department of Micrometeorology, 95440 Bayreuth, Germany
Member of Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, 95440 Bayreuth, Germany
F. X. Meixner
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
University of Zimbabwe, Department of Physics, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe
E. Falge
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
C. Zetzsch
University of Bayreuth, Atmospheric Chemistry Research Laboratory, 95440 Bayreuth, Germany
Member of Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, 95440 Bayreuth, Germany
A. Serafimovich
University of Bayreuth, Department of Micrometeorology, 95440 Bayreuth, Germany
Member of Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, 95440 Bayreuth, Germany
A. Bargsten
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
T. Behrendt
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
T. Biermann
University of Bayreuth, Department of Micrometeorology, 95440 Bayreuth, Germany
C. Breuninger
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
S. Dix
University of Bayreuth, Department of Micrometeorology, 95440 Bayreuth, Germany
now at: TÜV Süd Industrie Service GmbH Wind Cert Services, Ludwig-Eckert-Straße 10, 93049 Regensburg, Germany
T. Gerken
University of Bayreuth, Department of Micrometeorology, 95440 Bayreuth, Germany
M. Hunner
University of Bayreuth, Department of Micrometeorology, 95440 Bayreuth, Germany
now at: TÜV Süd Industrie Service GmbH Wind Cert Services, Ludwig-Eckert-Straße 10, 93049 Regensburg, Germany
L. Lehmann-Pape
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
K. Hens
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
G. Jocher
University of Bayreuth, Department of Micrometeorology, 95440 Bayreuth, Germany
now at: Alfred-Wegener Institute for Polar and Marine Research, Telegrafenberg A43, 14473 Potsdam, Germany
J. Kesselmeier
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
J. Lüers
University of Bayreuth, Department of Micrometeorology, 95440 Bayreuth, Germany
Member of Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, 95440 Bayreuth, Germany
J.-C. Mayer
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
A. Moravek
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
D. Plake
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
M. Riederer
University of Bayreuth, Department of Micrometeorology, 95440 Bayreuth, Germany
F. Rütz
University of Bayreuth, Department of Micrometeorology, 95440 Bayreuth, Germany
M. Scheibe
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
now at: German Aerospace Center (DLR), Institute of Atmospheric Physics, Münchner Straße 20, 82234 Oberpfaffenhofen-Wessling, Germany
L. Siebicke
University of Bayreuth, Department of Micrometeorology, 95440 Bayreuth, Germany
now at: Institut National de la Recherche Agronomique (INRA), BP 709, 97387 Cedex Kourou, French Guiana
M. Sörgel
University of Bayreuth, Atmospheric Chemistry Research Laboratory, 95440 Bayreuth, Germany
K. Staudt
University of Bayreuth, Department of Micrometeorology, 95440 Bayreuth, Germany
now at: Agroscope ART Research Station, Reckenholzstrasse 191, 8046 Zürich, Switzerland
I. Trebs
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
A. Tsokankunku
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
M. Welling
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
V. Wolff
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
now at: Agroscope ART Research Station, Reckenholzstrasse 191, 8046 Zürich, Switzerland
Z. Zhu
Max-Planck-Institute of Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany
now at: Institute for Geographic Sciences and Natural Resources Research, ChineseAcademy of Sciences (CAS), A11 Datun Road, Anwai, Beijing 100101, China
Related subject area
Subject: Biosphere Interactions | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
Residence times of air in a mature forest: observational evidence from a free-air CO2 enrichment experiment
Energy and mass exchange at an urban site in mountainous terrain – the Alpine city of Innsbruck
Dynamics of aerosol, humidity, and clouds in air masses travelling over Fennoscandian boreal forests
Observations of aerosol–vapor pressure deficit–evaporative fraction coupling over India
Biogeochemical and biophysical responses to episodes of wildfire smoke from natural ecosystems in southwestern British Columbia, Canada
Traces of urban forest in temperature and CO2 signals in monsoon East Asia
Technical note: Uncertainties in eddy covariance CO2 fluxes in a semiarid sagebrush ecosystem caused by gap-filling approaches
Simulating the spatiotemporal variations in aboveground biomass in Inner Mongolian grasslands under environmental changes
Concentrations and biosphere–atmosphere fluxes of inorganic trace gases and associated ionic aerosol counterparts over the Amazon rainforest
Characterization of the radiative impact of aerosols on CO2 and energy fluxes in the Amazon deforestation arch using artificial neural networks
New particle formation events observed at the King Sejong Station, Antarctic Peninsula – Part 2: Link with the oceanic biological activities
Vertical observations of the atmospheric boundary layer structure over Beijing urban area during air pollution episodes
Characterisation of short-term extreme methane fluxes related to non-turbulent mixing above an Arctic permafrost ecosystem
Characterization of ozone deposition to a mixed oak–hornbeam forest – flux measurements at five levels above and inside the canopy and their interactions with nitric oxide
Direct effect of aerosols on solar radiation and gross primary production in boreal and hemiboreal forests
The monsoon effect on energy and carbon exchange processes over a highland lake in the southwest of China
Turbulent transport of energy across a forest and a semiarid shrubland
Study of the daily and seasonal atmospheric CH4 mixing ratio variability in a rural Spanish region using 222Rn tracer
Nighttime wind and scalar variability within and above an Amazonian canopy
Estimating regional-scale methane flux and budgets using CARVE aircraft measurements over Alaska
Canopy uptake dominates nighttime carbonyl sulfide fluxes in a boreal forest
Net ecosystem exchange and energy fluxes measured with the eddy covariance technique in a western Siberian bog
Biophysical effects on the interannual variation in carbon dioxide exchange of an alpine meadow on the Tibetan Plateau
Quantifying the contribution of land use change to surface temperature in the lower reaches of the Yangtze River
Overview of mercury dry deposition, litterfall, and throughfall studies
Scalar turbulent behavior in the roughness sublayer of an Amazonian forest
Surface–atmosphere exchange of ammonia over peatland using QCL-based eddy-covariance measurements and inferential modeling
Characterization of total ecosystem-scale biogenic VOC exchange at a Mediterranean oak–hornbeam forest
Are BVOC exchanges in agricultural ecosystems overestimated? Insights from fluxes measured in a maize field over a whole growing season
Step changes in persistent organic pollutants over the Arctic and their implications
Estimating surface fluxes using eddy covariance and numerical ogive optimization
Nitrous oxide emissions from a commercial cornfield (Zea mays) measured using the eddy covariance technique
Observations of the scale-dependent turbulence and evaluation of the flux–gradient relationship for sensible heat for a closed Douglas-fir canopy in very weak wind conditions
The effect of atmospheric aerosol particles and clouds on net ecosystem exchange in the Amazon
Acetaldehyde exchange above a managed temperate mountain grassland
Surface response to rain events throughout the West African monsoon
The role of vegetation in the CO2 flux from a tropical urban neighbourhood
Air-surface exchange measurements of gaseous elemental mercury over naturally enriched and background terrestrial landscapes in Australia
Four-year (2006–2009) eddy covariance measurements of CO2 flux over an urban area in Beijing
Momentum and scalar transport within a vegetation canopy following atmospheric stability and seasonal canopy changes: the CHATS experiment
Abiotic and biotic control of methanol exchanges in a temperate mixed forest
Analysis of coherent structures and atmosphere-canopy coupling strength during the CABINEX field campaign
Methane flux, vertical gradient and mixing ratio measurements in a tropical forest
The effects of clouds and aerosols on net ecosystem CO2 exchange over semi-arid Loess Plateau of Northwest China
Size-dependent aerosol deposition velocities during BEARPEX'07
Day-time concentrations of biogenic volatile organic compounds in a boreal forest canopy and their relation to environmental and biological factors
Edward J. Bannister, Mike Jesson, Nicholas J. Harper, Kris M. Hart, Giulio Curioni, Xiaoming Cai, and A. Rob MacKenzie
Atmos. Chem. Phys., 23, 2145–2165, https://doi.org/10.5194/acp-23-2145-2023, https://doi.org/10.5194/acp-23-2145-2023, 2023
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In forests, the residence time of air influences canopy chemistry and atmospheric exchange. However, there have been few field observations. We use long-term open-air CO2 enrichment measurements to show median daytime residence times are twice as long when the trees are in leaf versus when they are not. Residence times increase with increasing atmospheric stability and scale inversely with turbulence. Robust parametrisations for large-scale models are available using common distributions.
Helen Claire Ward, Mathias Walter Rotach, Alexander Gohm, Martin Graus, Thomas Karl, Maren Haid, Lukas Umek, and Thomas Muschinski
Atmos. Chem. Phys., 22, 6559–6593, https://doi.org/10.5194/acp-22-6559-2022, https://doi.org/10.5194/acp-22-6559-2022, 2022
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This study examines how cities and their surroundings influence turbulent exchange processes responsible for weather and climate. Analysis of a 4-year observational dataset for the Alpine city of Innsbruck reveals several similarities with other (flat) city centre sites. However, the mountain setting leads to characteristic daily and seasonal flow patterns (valley winds) and downslope windstorms that have a marked effect on temperature, wind speed, turbulence and pollutant concentration.
Meri Räty, Larisa Sogacheva, Helmi-Marja Keskinen, Veli-Matti Kerminen, Tuomo Nieminen, Tuukka Petäjä, Ekaterina Ezhova, and Markku Kulmala
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2022-264, https://doi.org/10.5194/acp-2022-264, 2022
Revised manuscript accepted for ACP
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We utilised back-trajectories to identify the source region of air masses arriving in Hyytiälä, Finland, and their travel time over forests. Combined with atmospheric observations, they revealed how air mass transport over the Fennoscandian boreal forest during the growing season produced an accumulation of cloud condensation nuclei and humidity, promoting cloudiness and precipitation. By 60 hours of transport, air masses appeared to reach a balanced state with the forest environment.
Chandan Sarangi, TC Chakraborty, Sachchidanand Tripathi, Mithun Krishnan, Ross Morrison, Jonathan Evans, and Lina M. Mercado
Atmos. Chem. Phys., 22, 3615–3629, https://doi.org/10.5194/acp-22-3615-2022, https://doi.org/10.5194/acp-22-3615-2022, 2022
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Transpiration fluxes by vegetation are reduced under heat stress to conserve water. However, in situ observations over northern India show that the strength of the inverse association between transpiration and atmospheric vapor pressure deficit is weakening in the presence of heavy aerosol loading. This finding not only implicates the significant role of aerosols in modifying the evaporative fraction (EF) but also warrants an in-depth analysis of the aerosol–plant–temperature–EF continuum.
Sung-Ching Lee, Sara H. Knox, Ian McKendry, and T. Andrew Black
Atmos. Chem. Phys., 22, 2333–2349, https://doi.org/10.5194/acp-22-2333-2022, https://doi.org/10.5194/acp-22-2333-2022, 2022
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Wildfire smoke alters land–atmosphere exchange. Here, measurements in a forest and a wetland during four smoke episodes over four summers showed that impacts on radiation and heat budget were the greatest when smoke arrived in late summer. Both sites sequestered more CO2 under smoky days, partly due to diffuse light, but emitted CO2 when smoke was dense. This kind of field study is important for validating predictions of smoke–productivity feedbacks and has climate change implications.
Keunmin Lee, Je-Woo Hong, Jeongwon Kim, Sungsoo Jo, and Jinkyu Hong
Atmos. Chem. Phys., 21, 17833–17853, https://doi.org/10.5194/acp-21-17833-2021, https://doi.org/10.5194/acp-21-17833-2021, 2021
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This study examine two benefits of urban forest, thermal mitigation and carbon uptake. Our analysis indicates that the urban forest reduces both the warming trend and urban heat island intensity. Urban forest is a net CO2 source despite larger photosynthetic carbon uptake because of strong contribution of ecosystem respiration, which can be attributed to the substantial amount of soil organic carbon by intensive historical soil use and warm temperature in a city.
Jingyu Yao, Zhongming Gao, Jianping Huang, Heping Liu, and Guoyin Wang
Atmos. Chem. Phys., 21, 15589–15603, https://doi.org/10.5194/acp-21-15589-2021, https://doi.org/10.5194/acp-21-15589-2021, 2021
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Gap-filling usually accounts for a large source of uncertainties in the annual CO2 fluxes, though gap-filling CO2 fluxes is challenging at dryland sites due to small fluxes. Using data collected from a semiarid site, four machine learning methods are evaluated with different lengths of artificial gaps. The artificial neural network and random forest methods outperform the other methods. With these methods, uncertainties in the annual CO2 flux at this site are estimated to be within 16 g C m−2.
Guocheng Wang, Zhongkui Luo, Yao Huang, Wenjuan Sun, Yurong Wei, Liujun Xiao, Xi Deng, Jinhuan Zhu, Tingting Li, and Wen Zhang
Atmos. Chem. Phys., 21, 3059–3071, https://doi.org/10.5194/acp-21-3059-2021, https://doi.org/10.5194/acp-21-3059-2021, 2021
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We simulate the spatiotemporal dynamics of aboveground biomass (AGB) in Inner Mongolian grasslands using a machine-learning-based approach. Under climate change, on average, compared with the historical AGB (average of 1981–2019), the AGB at the end of this century (average of 2080–2100) would decrease by 14 % under RCP4.5 and 28 % under RCP8.5. The decrease in AGB might be mitigated or even reversed by positive carbon dioxide enrichment effects on plant growth.
Robbie Ramsay, Chiara F. Di Marco, Matthias Sörgel, Mathew R. Heal, Samara Carbone, Paulo Artaxo, Alessandro C. de Araùjo, Marta Sá, Christopher Pöhlker, Jost Lavric, Meinrat O. Andreae, and Eiko Nemitz
Atmos. Chem. Phys., 20, 15551–15584, https://doi.org/10.5194/acp-20-15551-2020, https://doi.org/10.5194/acp-20-15551-2020, 2020
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The Amazon rainforest is a unique
laboratoryto study the processes which govern the exchange of gases and aerosols to and from the atmosphere. This study investigated these processes by measuring the atmospheric concentrations of trace gases and particles at the Amazon Tall Tower Observatory. We found that the long-range transport of pollutants can affect the atmospheric composition above the Amazon rainforest and that the gases ammonia and nitrous acid can be emitted from the rainforest.
Renato Kerches Braghiere, Marcia Akemi Yamasoe, Nilton Manuel Évora do Rosário, Humberto Ribeiro da Rocha, José de Souza Nogueira, and Alessandro Carioca de Araújo
Atmos. Chem. Phys., 20, 3439–3458, https://doi.org/10.5194/acp-20-3439-2020, https://doi.org/10.5194/acp-20-3439-2020, 2020
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We evaluate how the interaction of smoke with sun light impacts the exchange of energy and mass between vegetation and the atmosphere using a machine learning technique. We found an effect of the smoke on CO2, energy, and water fluxes, linking the effects of smoke with temperature, humidity, and winds. CO2 exchange increased by up to 55 % in the presence of smoke. A decrease of 12 % was observed for a site with simpler vegetation. Energy fluxes were negatively impacted for all study sites.
Eunho Jang, Ki-Tae Park, Young Jun Yoon, Tae-Wook Kim, Sang-Bum Hong, Silvia Becagli, Rita Traversi, Jaeseok Kim, and Yeontae Gim
Atmos. Chem. Phys., 19, 7595–7608, https://doi.org/10.5194/acp-19-7595-2019, https://doi.org/10.5194/acp-19-7595-2019, 2019
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We reported long-term observations (from 2009 to 2016) of the nanoparticles measured at the Antarctic Peninsula (62.2° S, 58.8° W), and satellite-derived estimates of the biological characteristics were analyzed to identify the link between new particle formation and marine biota. The key finding from this research is that the formation of nanoparticles was strongly associated not only with the biomass of phytoplankton but, more importantly, also its taxonomic composition in the Antarctic Ocean.
Linlin Wang, Junkai Liu, Zhiqiu Gao, Yubin Li, Meng Huang, Sihui Fan, Xiaoye Zhang, Yuanjian Yang, Shiguang Miao, Han Zou, Yele Sun, Yong Chen, and Ting Yang
Atmos. Chem. Phys., 19, 6949–6967, https://doi.org/10.5194/acp-19-6949-2019, https://doi.org/10.5194/acp-19-6949-2019, 2019
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Urban boundary layer (UBL) affects the physical and chemical processes of the pollutants, and UBL structure can also be altered by pollutants. This paper presents the interactions between air pollution and the UBL structure by using the field data mainly collected from a 325 m meteorology tower, as well as from a Doppler wind lidar, during a severe heavy pollution event that occurred during 1–4 December 2016 in Beijing.
Carsten Schaller, Fanny Kittler, Thomas Foken, and Mathias Göckede
Atmos. Chem. Phys., 19, 4041–4059, https://doi.org/10.5194/acp-19-4041-2019, https://doi.org/10.5194/acp-19-4041-2019, 2019
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Methane emissions from biogenic sources, e.g. Arctic permafrost ecosystems, are associated with uncertainties due to the high variability of fluxes in both space and time. Besides the traditional eddy covariance method, we evaluated a method based on wavelet analysis, which does not require a stationary time series, to calculate fluxes. The occurrence of extreme methane flux events was strongly correlated with the soil temperature. They were triggered by atmospheric non-turbulent mixing.
Angelo Finco, Mhairi Coyle, Eiko Nemitz, Riccardo Marzuoli, Maria Chiesa, Benjamin Loubet, Silvano Fares, Eugenio Diaz-Pines, Rainer Gasche, and Giacomo Gerosa
Atmos. Chem. Phys., 18, 17945–17961, https://doi.org/10.5194/acp-18-17945-2018, https://doi.org/10.5194/acp-18-17945-2018, 2018
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A 1-month field campaign of ozone (O3) flux measurements along a five-level vertical profile of a mature broadleaf forest highlighted that the biosphere–atmosphere exchange of this pollutant is modulated by complex diel dynamics occurring within and below the canopy. The canopy removed nearly 80 % of the O3 deposited to the forest; only a minor part was removed by the soil and the understorey (2 %), while the remaining 18.2 % was removed by chemical reactions with NO mostly emitted from soil.
Ekaterina Ezhova, Ilona Ylivinkka, Joel Kuusk, Kaupo Komsaare, Marko Vana, Alisa Krasnova, Steffen Noe, Mikhail Arshinov, Boris Belan, Sung-Bin Park, Jošt Valentin Lavrič, Martin Heimann, Tuukka Petäjä, Timo Vesala, Ivan Mammarella, Pasi Kolari, Jaana Bäck, Üllar Rannik, Veli-Matti Kerminen, and Markku Kulmala
Atmos. Chem. Phys., 18, 17863–17881, https://doi.org/10.5194/acp-18-17863-2018, https://doi.org/10.5194/acp-18-17863-2018, 2018
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Understanding the connections between aerosols, solar radiation and photosynthesis in terrestrial ecosystems is important for estimates of the CO2 balance in the atmosphere. Atmospheric aerosols and clouds influence solar radiation. In this study, we quantify the aerosol effect on solar radiation in boreal forests and study forest ecosystems response to this change in the radiation conditions. The analysis is based on atmospheric observations from several remote stations in Eurasian forests.
Qun Du, Huizhi Liu, Lujun Xu, Yang Liu, and Lei Wang
Atmos. Chem. Phys., 18, 15087–15104, https://doi.org/10.5194/acp-18-15087-2018, https://doi.org/10.5194/acp-18-15087-2018, 2018
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Erhai Lake is a subtropical highland shallow lake on the southeast margin of the Tibetan Plateau, which is influenced by both South Asian and East Asian summer monsoons. The substantial difference in atmospheric properties during monsoon and non-monsoon periods has a large effect in regulating turbulent heat and carbon dioxide exchange processes over Erhai Lake. Large difference are found for the factors controlling sensible heat and carbon dioxide flux during monsoon and non-monsoon periods.
Tirtha Banerjee, Peter Brugger, Frederik De Roo, Konstantin Kröniger, Dan Yakir, Eyal Rotenberg, and Matthias Mauder
Atmos. Chem. Phys., 18, 10025–10038, https://doi.org/10.5194/acp-18-10025-2018, https://doi.org/10.5194/acp-18-10025-2018, 2018
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We studied the nature of turbulent transport over a well-defined surface heterogeneity (approximate scale 7 km) comprising a shrubland and a forest in the Yatir semiarid area in Israel. Using eddy covariance and Doppler lidar measurements, we studied the variations in the turbulent kinetic energy budget and turbulent fluxes, focusing especially on transport terms. We also confirmed the role of large-scale secondary circulations that transport energy between the shrubland and the forest.
Claudia Grossi, Felix R. Vogel, Roger Curcoll, Alba Àgueda, Arturo Vargas, Xavier Rodó, and Josep-Anton Morguí
Atmos. Chem. Phys., 18, 5847–5860, https://doi.org/10.5194/acp-18-5847-2018, https://doi.org/10.5194/acp-18-5847-2018, 2018
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To gain a full picture of the Spanish (and European) GHG balance, understanding of CH4 emissions in different regions is a critical challenge, as is the improvement of bottom-up inventories for all European regions. This study uses, among other elements, GHG, meteorological and 222Rn tracer data from a Spanish region to understand the main causes of temporal variability of GHG mixing ratios. The study can offer new insights into regional emissions by identifying the impacts of changing sources.
Pablo E. S. Oliveira, Otávio C. Acevedo, Matthias Sörgel, Anywhere Tsokankunku, Stefan Wolff, Alessandro C. Araújo, Rodrigo A. F. Souza, Marta O. Sá, Antônio O. Manzi, and Meinrat O. Andreae
Atmos. Chem. Phys., 18, 3083–3099, https://doi.org/10.5194/acp-18-3083-2018, https://doi.org/10.5194/acp-18-3083-2018, 2018
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Carbon dioxide and latent heat fluxes within the canopy are dominated by low-frequency (nonturbulent) processes. There is a striking contrast between fully turbulent and intermittent nights, such that turbulent processes dominate the total nighttime exchange during the former, while nonturbulent processes are more relevant in the latter. In very stable nights, during which intermittent exchange prevails, the stable boundary layer may be shallower than the highest observational level at 80 m.
Sean Hartery, Róisín Commane, Jakob Lindaas, Colm Sweeney, John Henderson, Marikate Mountain, Nicholas Steiner, Kyle McDonald, Steven J. Dinardo, Charles E. Miller, Steven C. Wofsy, and Rachel Y.-W. Chang
Atmos. Chem. Phys., 18, 185–202, https://doi.org/10.5194/acp-18-185-2018, https://doi.org/10.5194/acp-18-185-2018, 2018
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Methane is the second most important greenhouse gas but its emissions from northern regions are still poorly constrained. This study uses aircraft measurements of methane from Alaska to estimate surface emissions. We found that methane emission rates depend on the soil temperature at depths where its production was taking place, and that total emissions were similar between tundra and boreal regions. These results provide a simple way to predict methane emissions in this region.
Linda M. J. Kooijmans, Kadmiel Maseyk, Ulli Seibt, Wu Sun, Timo Vesala, Ivan Mammarella, Pasi Kolari, Juho Aalto, Alessandro Franchin, Roberta Vecchi, Gianluigi Valli, and Huilin Chen
Atmos. Chem. Phys., 17, 11453–11465, https://doi.org/10.5194/acp-17-11453-2017, https://doi.org/10.5194/acp-17-11453-2017, 2017
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Carbon cycle studies rely on the accuracy of models to estimate the amount of CO2 being taken up by vegetation. The gas carbonyl sulfide (COS) can serve as a tool to estimate the vegetative CO2 uptake by scaling the ecosystem uptake of COS to that of CO2. Here we investigate the nighttime fluxes of COS. The relationships found in this study will aid in implementing nighttime COS uptake in models, which is key to obtain accurate estimates of vegetative CO2 uptake with the use of COS.
Pavel Alekseychik, Ivan Mammarella, Dmitry Karpov, Sigrid Dengel, Irina Terentieva, Alexander Sabrekov, Mikhail Glagolev, and Elena Lapshina
Atmos. Chem. Phys., 17, 9333–9345, https://doi.org/10.5194/acp-17-9333-2017, https://doi.org/10.5194/acp-17-9333-2017, 2017
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West Siberian peatlands occupy a large fraction of land area in the region, and yet little is known about their interaction with the atmosphere. We took the first measurements of CO2 and energy surface balances over a typical bog of West Siberian middle taiga, in the vicinity of the Mukhrino field station (Khanty–Mansiysk). The May–August study in a wet year (2015) revealed a relatively large photosynthetic sink of CO2 that was close to the high end of estimates at bog sites elsewhere.
Lei Wang, Huizhi Liu, Jihua Sun, and Yaping Shao
Atmos. Chem. Phys., 17, 5119–5129, https://doi.org/10.5194/acp-17-5119-2017, https://doi.org/10.5194/acp-17-5119-2017, 2017
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This study found that the seasonal variation in CO2 exchange over an alpine meadow on the Tibetan Plateau was primarily affected by the seasonal pattern of air temperature, especially in spring and autumn. The annual net ecosystem exchange decreased with mean annual temperature, and then increased when the gross primary production became saturated. This study contributes to the response of the alpine meadow ecosystem to global warming.
Xueqian Wang, Weidong Guo, Bo Qiu, Ye Liu, Jianning Sun, and Aijun Ding
Atmos. Chem. Phys., 17, 4989–4996, https://doi.org/10.5194/acp-17-4989-2017, https://doi.org/10.5194/acp-17-4989-2017, 2017
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Land use or cover change is a fundamental anthropogenic forcing for climate change. Based on field observations, we quantified the contributions of different factors to surface temperature change and deepened the understanding of its mechanisms. We found evaporative cooling plays the most important role in the temperature change, while radiative forcing, which is traditionally emphasized, is not significant. This study provided firsthand evidence to verify the model results in IPCC AR5.
L. Paige Wright, Leiming Zhang, and Frank J. Marsik
Atmos. Chem. Phys., 16, 13399–13416, https://doi.org/10.5194/acp-16-13399-2016, https://doi.org/10.5194/acp-16-13399-2016, 2016
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The current knowledge concerning mercury dry deposition is reviewed, including dry deposition algorithms used in chemical transport models and at monitoring sites, measurement methods and studies for quantifying dry deposition of oxidized mercury, and measurement studies of litterfall and throughfall mercury. Over all the regions, dry deposition, estimated as the sum of litterfall and throughfall minus open-field wet deposition, is more dominant than wet deposition for Hg deposition.
Einara Zahn, Nelson L. Dias, Alessandro Araújo, Leonardo D. A. Sá, Matthias Sörgel, Ivonne Trebs, Stefan Wolff, and Antônio Manzi
Atmos. Chem. Phys., 16, 11349–11366, https://doi.org/10.5194/acp-16-11349-2016, https://doi.org/10.5194/acp-16-11349-2016, 2016
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Preliminary data from the ATTO project were analyzed to characterize the exchange of heat, water vapor, and CO2 between the Amazon forest and the atmosphere. The forest roughness makes estimation of their fluxes difficult, and even measurements at 42 m above the canopy show a lot of scatter. Still, measurements made around noon showed much better conformity with standard theories for the exchange of these quantities, opening the possibility of good flux estimates when the sun is high.
Undine Zöll, Christian Brümmer, Frederik Schrader, Christof Ammann, Andreas Ibrom, Christophe R. Flechard, David D. Nelson, Mark Zahniser, and Werner L. Kutsch
Atmos. Chem. Phys., 16, 11283–11299, https://doi.org/10.5194/acp-16-11283-2016, https://doi.org/10.5194/acp-16-11283-2016, 2016
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Accurate quantification of atmospheric ammonia concentration and exchange fluxes with the land surface has been a major metrological challenge. We demonstrate the applicability of a novel laser device to identify concentration and flux patterns over a peatland ecosystem influenced by nearby agricultural practices. Results help to strengthen air quality monitoring networks, lead to better understanding of ecosystem functionality and improve parameterizations in air chemistry and transport models.
Simon Schallhart, Pekka Rantala, Eiko Nemitz, Ditte Taipale, Ralf Tillmann, Thomas F. Mentel, Benjamin Loubet, Giacomo Gerosa, Angelo Finco, Janne Rinne, and Taina M. Ruuskanen
Atmos. Chem. Phys., 16, 7171–7194, https://doi.org/10.5194/acp-16-7171-2016, https://doi.org/10.5194/acp-16-7171-2016, 2016
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We present ecosystem exchange fluxes from a mixed oak–hornbeam forest in the Po Valley, Italy. Detectable fluxes were observed for 29 compounds, dominated by isoprene, which comprised over 60 % of the upward flux. Methanol seemed to be deposited to dew, as the deposition happened in the early morning. We estimated that up to 30 % of the upward flux of methyl vinyl ketone and methacrolein originated from atmospheric oxidation of isoprene.
Aurélie Bachy, Marc Aubinet, Niels Schoon, Crist Amelynck, Bernard Bodson, Christine Moureaux, and Bernard Heinesch
Atmos. Chem. Phys., 16, 5343–5356, https://doi.org/10.5194/acp-16-5343-2016, https://doi.org/10.5194/acp-16-5343-2016, 2016
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This research focuses on Biogenic Volatile Organic Compounds (BVOC) exchanges between a maize field and the atmosphere. Indeed, few BVOC studies have already investigated agricultural ecosystems. We found that the maize field emitted mainly methanol, that both soil and plants contributed to the net exchange, that exchanges were lower than in other studies and than considered by models. Our work tends thus to lower the impact of maize on terrestrial BVOC exchanges.
Y. Zhao, T. Huang, L. Wang, H. Gao, and J. Ma
Atmos. Chem. Phys., 15, 3479–3495, https://doi.org/10.5194/acp-15-3479-2015, https://doi.org/10.5194/acp-15-3479-2015, 2015
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After several decades of declining persistent organic pollutants in the arctic environment due to their global use restriction, some of these toxic chemicals increased in the mid-2000s and undertook statistically significant step changes which coincided with arctic sea ice melting. Results provide statistical evidence for the releasing of toxic chemicals from their reservoirs in the Arctic due to the rapid change in the arctic environment.
J. Sievers, T. Papakyriakou, S. E. Larsen, M. M. Jammet, S. Rysgaard, M. K. Sejr, and L. L. Sørensen
Atmos. Chem. Phys., 15, 2081–2103, https://doi.org/10.5194/acp-15-2081-2015, https://doi.org/10.5194/acp-15-2081-2015, 2015
H. Huang, J. Wang, D. Hui, D. R. Miller, S. Bhattarai, S. Dennis, D. Smart, T. Sammis, and K. C. Reddy
Atmos. Chem. Phys., 14, 12839–12854, https://doi.org/10.5194/acp-14-12839-2014, https://doi.org/10.5194/acp-14-12839-2014, 2014
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An EC system was assembled with a sonic anemometer and a new fast-response N2O analyzer and applied in a cornfield during a growing season. This N2O EC system provided reliable N2O flux measurements. The average flux was about 63% higher during the daytime than during the nighttime. Seasonal fluxes were highly dependent on soil moisture rather than soil temperature.
D. Vickers and C. K. Thomas
Atmos. Chem. Phys., 14, 9665–9676, https://doi.org/10.5194/acp-14-9665-2014, https://doi.org/10.5194/acp-14-9665-2014, 2014
G. G. Cirino, R. A. F. Souza, D. K. Adams, and P. Artaxo
Atmos. Chem. Phys., 14, 6523–6543, https://doi.org/10.5194/acp-14-6523-2014, https://doi.org/10.5194/acp-14-6523-2014, 2014
L. Hörtnagl, I. Bamberger, M. Graus, T. M. Ruuskanen, R. Schnitzhofer, M. Walser, A. Unterberger, A. Hansel, and G. Wohlfahrt
Atmos. Chem. Phys., 14, 5369–5391, https://doi.org/10.5194/acp-14-5369-2014, https://doi.org/10.5194/acp-14-5369-2014, 2014
F. Lohou, L. Kergoat, F. Guichard, A. Boone, B. Cappelaere, J.-M. Cohard, J. Demarty, S. Galle, M. Grippa, C. Peugeot, D. Ramier, C. M. Taylor, and F. Timouk
Atmos. Chem. Phys., 14, 3883–3898, https://doi.org/10.5194/acp-14-3883-2014, https://doi.org/10.5194/acp-14-3883-2014, 2014
E. Velasco, M. Roth, S. H. Tan, M. Quak, S. D. A. Nabarro, and L. Norford
Atmos. Chem. Phys., 13, 10185–10202, https://doi.org/10.5194/acp-13-10185-2013, https://doi.org/10.5194/acp-13-10185-2013, 2013
G. C. Edwards and D. A. Howard
Atmos. Chem. Phys., 13, 5325–5336, https://doi.org/10.5194/acp-13-5325-2013, https://doi.org/10.5194/acp-13-5325-2013, 2013
H. Z. Liu, J. W. Feng, L. Järvi, and T. Vesala
Atmos. Chem. Phys., 12, 7881–7892, https://doi.org/10.5194/acp-12-7881-2012, https://doi.org/10.5194/acp-12-7881-2012, 2012
S. Dupont and E. G. Patton
Atmos. Chem. Phys., 12, 5913–5935, https://doi.org/10.5194/acp-12-5913-2012, https://doi.org/10.5194/acp-12-5913-2012, 2012
Q. Laffineur, M. Aubinet, N. Schoon, C. Amelynck, J.-F. Müller, J. Dewulf, H. Van Langenhove, K. Steppe, and B. Heinesch
Atmos. Chem. Phys., 12, 577–590, https://doi.org/10.5194/acp-12-577-2012, https://doi.org/10.5194/acp-12-577-2012, 2012
A. L. Steiner, S. N. Pressley, A. Botros, E. Jones, S. H. Chung, and S. L. Edburg
Atmos. Chem. Phys., 11, 11921–11936, https://doi.org/10.5194/acp-11-11921-2011, https://doi.org/10.5194/acp-11-11921-2011, 2011
C. A. S. Querino, C. J. P. P. Smeets, I. Vigano, R. Holzinger, V. Moura, L. V. Gatti, A. Martinewski, A. O. Manzi, A. C. de Araújo, and T. Röckmann
Atmos. Chem. Phys., 11, 7943–7953, https://doi.org/10.5194/acp-11-7943-2011, https://doi.org/10.5194/acp-11-7943-2011, 2011
X. Jing, J. Huang, G. Wang, K. Higuchi, J. Bi, Y. Sun, H. Yu, and T. Wang
Atmos. Chem. Phys., 10, 8205–8218, https://doi.org/10.5194/acp-10-8205-2010, https://doi.org/10.5194/acp-10-8205-2010, 2010
R. J. Vong, I. J. Vong, D. Vickers, and D. S. Covert
Atmos. Chem. Phys., 10, 5749–5758, https://doi.org/10.5194/acp-10-5749-2010, https://doi.org/10.5194/acp-10-5749-2010, 2010
H. K. Lappalainen, S. Sevanto, J. Bäck, T. M. Ruuskanen, P. Kolari, R. Taipale, J. Rinne, M. Kulmala, and P. Hari
Atmos. Chem. Phys., 9, 5447–5459, https://doi.org/10.5194/acp-9-5447-2009, https://doi.org/10.5194/acp-9-5447-2009, 2009
Cited articles
Alaghmand, M., Shepson, P. B., Starn, T. K., Jobson, B. T., Wallace, H. W., Carroll, M. A., Bertman, S. B., Lamb, B., Edburg, S. L., Zhou, X., Apel, E., Riemer, D., Stevens, P., and Keutsch, F.: The morning NOx maximum in the forest atmosphere boundary layer, Atmos. Chem. Phys. Discuss., 11, 29251–29282, https://doi.org/10.5194/acpd-11-29251-2011, 2011.
Amiro, B. D.: Comparison of turbulence statistics within three boreal forest canopies, Bound.-Lay. Meteorol., 51, 99–121, 1990.
Antonia, R. A.: Conditional sampling in turbulence measurements, Annu. Rev. Fluid Mech., 13, 131–156, 1981.
Arya, S. P.: Introduction to Micrometeorology, Academic Press, San Diego, 415 pp., 2001.
Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson, R. F., Hynes, R. G., Jenkin, M. E., Rossi, M. J., and Troe, J.: Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I – gas phase reactions of Ox, HOx, NOx and SOx species, Atmos. Chem. Phys., 4, 1461–1738, https://doi.org/10.5194/acp-4-1461-2004, 2004.
Aubinet, M.: Eddy covariance CO2 flux measurements in nocturnal conditions: An analysis of the problem, Ecol. Appl., 18, 1368–1378, 2008.
Aubinet, M., Grelle, A., Ibrom, A., Rannik, Ü., Moncrieff, J., Foken, T., Kowalski, A. S., Martin, P. H., Berbigier, P., Bernhofer, C., Clement, R., Elbers, J., Granier, A., Grünwald, T., Morgenstern, K., Pilegaard, K., Rebmann, C., Snijders, W., Valentini, R., and Vesala, T.: Estimates of the annual net carbon and water exchange of forests: The EUROFLUX methodology, Adv. Ecol. Res., 30, 113–175, 2000.
Aubinet, M., Heinesch, B., and Yernaux, M.: Horizontal and vertical CO2 advection in a sloping forest, Bound.-Lay. Meteorol., 108, 397–417, 2003.
Aubinet, M., Feigenwinter, C., Heinesch, B., Bernhofer, C., Canepa, E., Lindroth, A., Montagnani, L., Rebmann, C., Sedlak, P., and van Gorsel, E.: Direct advection measurements do not help to solve the night-time CO2 closure problem: Evidence from three different forests, Agr. Forest. Meteorol., 150, 655–664, 2010.
Baldocchi, D. and Meyers, T.: On using eco-physiological, micrometeorological and biogeochemical theory to evaluate carbon dioxide, water vapor and trace gas fluxes over vegetation, Agr. Forest. Meteorol., 90, 1–25, 1998.
Baldocchi, D., Falge, E., Gu, L., Olson, R., Hollinger, D., Running, S., Anthoni, P., Bernhofer, C., Davis, K., Evans, R., Fuentes, J., Goldstein, A., Katul, G., Law, B., Lee, X. H., Malhi, Y., Meyers, T., Munger, W., Oechel, W., PawU, K. T., Pilegaard, K., Schmid, H. P., Valentini, R., Verma, S., and Vesala, T.: FLUXNET: A new tool to study the temporal and spatial variability of ecosystem-scale carbon dioxide, water vapor, and energy flux densities, B. Am. Meteorol. Soc., 82, 2415–2434, 2001.
Banta, R. M., Newsom, R. K., Lundquist, J. K., Pichugina, Y. L., Coulter, R. L., and Mahrt, L.: Nocturnal low-level jet characteristics over Kansas during Cases-99, Bound.-Lay. Meteorol., 105, 221–252, 2002.
Bargsten, A., Falge, E., Pritsch, K., Huwe, B., and Meixner, F. X.: Laboratory measurements of nitric oxide release from forest soil with a thick organic layer under different understory types, Biogeosciences, 7, 1425–1441, https://doi.org/10.5194/bg-7-1425-2010, 2010.
Beniston, M.: From turbulence to climate, Springer, Berlin, Heidelberg, 328 pp., 1998.
Bergström, H. and Högström, U.: Turbulent exchange above a pine forest. II. Organized structures, Bound.-Lay. Meteorol., 49, 231–263, 1989.
Blöschl, G. and Sivapalan, M.: Scale issues in hydrological modelling – a review, Hydrol. Process., 9, 251–290, 1995.
Breuninger, C., Oswald, R., Kesselmeier, J., and Meixner, F. X.: The dynamic chamber method: trace gas exchange fluxes (NO, NO2, O3) between plants and the atmosphere in the laboratory and in the field, Atmos. Meas. Tech. Discuss., 4, 5183–5274, https://doi.org/10.5194/amtd-4-5183-2011, 2011.
Businger, J. A.: Evaluation of the accuracy with which dry deposition can be measured with current micrometeorological techniques, J. Appl. Meteorol., 25, 1100–1124, 1986.
Cava, D., Giostra, U., Siqueira, M., and Katul, G.: Organised motion and radiative perturbations in the nocturnal canopy sublayer above an even-aged pine forest, Bound.-Lay. Meteorol., 112, 129–157, 2004.
Chaparro-Suarez, I. G., Meixner, F. X., and Kesselmeier, J.: Nitrogen dioxide (NO2) uptake by vegetation controlled by atmospheric concentrations and plant stomatal aperture, Atmos. Environ., 45, 5742–5750, 2011.
Collatz, G. J., Ball, J. T., Grivet, C., and Berry, J. A.: Regulation of stomatal conductance and transpiration, a physiological model of canopy processes, Agr. Forest. Meteorol., 54, 107–136, 1991.
Collineau, S. and Brunet, Y.: Detection of turbulent coherent motions in a forest canopy. Part II: Time-scales and conditional averages, Bound.-Lay. Meteorol., 66, 49–73, 1993a.
Collineau, S. and Brunet, Y.: Detection of turbulent coherent motions in a forest canopy. Part I: Wavelet analysis, Bound.-Lay. Meteorol., 65, 357–379, 1993b.
Damköhler, G.: Der Einfluss der Turbulenz auf die Flammengeschwindigkeit in Gasgemischen, Z. Elektrochem., 46, 601–652, 1940.
Denmead, D. T. and Bradley, E. F.: Flux-gradient relationships in a forest canopy, in: The forest-atmosphere interaction, edited by: Hutchison, B. A. and Hicks, B. B., D. Reidel Publ. Comp., Dordrecht, Boston, London, 421–442, 1985.
Dlugi, R.: Interaction of NOx and VOC's within vegetation, in: Proceedings EUROTRAC-Symposium 92, edited by: Borrell, P. W., SPB Acad. Publ., The Hague, 682–688, 1993.
Falge, E., Tenhunen, J. D., Ryel, R., Alsheimer, M., and Köstner, B.: Modelling age- and density-related gas exchange of Picea abies canopies of the Fichtelgebirge, Germany, Ann. Sci. For., 57, 229–243, 2000.
Falge, E., Reth, S., Brüggemann, N., Butterbach-Bahl, K., Goldberg, V., Oltchev, A., Schaaf, S., Spindler, G., Stiller, B., Queck, R., Köstner, B., and Bernhofer, C.: Comparison of surface energy exchange models with eddy flux data in forest and grassland ecosystems of Germany, Ecol. Mod., 188, 174–216, 2005.
Falge, E. M., Ryel, R. J., Alsheimer, M., and Tenhunen, J. D.: Effects on stand structure and physiology on forest gas exchange: A simulation study for Norway spruce, Trees, 11, 436–448, 1997.
Farmer, D. K. and Cohen, R. C.: Observations of HNO3, ΣAN, ΣPN and NO2 fluxes: evidence for rapid HOx chemistry within a pine forest canopy, Atmos. Chem. Phys., 8, 3899–3917, https://doi.org/10.5194/acp-8-3899-2008, 2008.
Farquhar, G. D. and von Caemmerer, S.: Modeling photosynthetic response to environmental conditions, in: Encyclopia of plant physiology II, 12b, edited by: Lange, O. L., Nobel, P. S., Osmond, C. B., and Ziegler, H., Springer, Berlin, 1982.
Feigenwinter, C., Bernhofer, C., Eichelmann, U., Heinesch, B., Hertel, M., Janous, D., Kolle, O., Lagergren, F., Lindroth, A., Minerbi, S., Moderow, U., Mölder, M., Montagnani, L., Queck, R., Rebmann, C., Vestin, P., Yernaux, M., Zeri, M., Ziegler, W., and Aubinet, M.: Comparison of horizontal and vertical advective CO2 uxes at three forest sites, Agr. Forest. Meteorol., 148, 12–24, 2008.
Finnigan, J.: Turbulence in plant canopies, Annu. Rev. Fluid Mech., 32, 519–571, 2000.
Finnigan, J.: An introduction to flux measurements in diffiult conditions, Ecol. Appl., 18, 1340–1350, 2008.
Fitzjarrald, D. R. and Moore, K. E.: Mechanisms of nocturnal exchange between the rain forest and the atmosphere, J. Geophys. Res., 95, 16839–16850, 1990.
Foken, T.: Micrometeorology, Springer, Berlin, Heidelberg, 308 pp., 2008a.
Foken, T.: The energy balance closure problem – An overview, Ecol. Appl., 18, 1351–1367, 2008b.
Foken, T. and Leclerc, M. Y.: Methods and limitations in validation of footprint models, Agr. Forest. Meteorol., 127, 223–234, 2004.
Foken, T. and Wichura, B.: Tools for quality assessment of surface-based flux measurements, Agr. Forest. Meteorol., 78, 83–105, 1996.
Foken, T., Göckede, M., Mauder, M., Mahrt, L., Amiro, B. D., and Munger, J. W.: Post-field data quality control, in: Handbook of Micrometeorology: A Guide for Surface Flux Measurement and Analysis, edited by: Lee, X., Massman, W. J., and Law, B., Kluwer, Dordrecht, 181–208, 2004.
Fowler, D., Flechard, C., Cape, J. N., Storeton-West, R., and Coyle, M.: Measurements of ozone deposition to vegetation quantifying the flux, the stomatal and non-stomatal components, Water Air Soil Pollut., 130, 63–74, 2001.
Frankenberger, E.: Untersuchungen über den Vertikalaustausch in den unteren Dekametern der Atmosphäre, Ann. Meteorol., 4, 358–374, 1951.
Ganzeveld, L. N., Lelieveld, J., Dentener, F. J., Krol, M. C., Bowman, A. J., and Roelofs, G. J.: Global soilbiogenic emissions and the role of canopy processes, J. Geophys. Res., 107, 4298, https://doi.org/10.1029/2001JD001289, 2002.
Garratt, J. R.: Flux profile relations above tall vegetation, Q. J. Roy. Meteorol. Soc., 104, 199–211, 1978.
Garratt, J. R.: Surface influence upon vertical profiles in the atmospheric near surface layer, Q. J. Roy. Meteorol. Soc., 106, 803–819, 1980.
Gerstberger, P., Foken, T., and Kalbitz, K.: The Lehstenbach and Steinkreuz chatchments in NE Bavaria, Germany, in: Biogeochemistry of Forested Catchments in a Changing Enivironment, A German Gase Study. Ecological Studies, edited by: Matzner, E., Springer, Heidelberg, 15–41, 2004.
Ge{ß}ler, A., Rienks, M., and Rennenberg, H.: Stomatal uptake and cuticular adsorption contribute to dry deposition of NH3 and NO2 to needles of adult spruce (Picea abies) trees, New Phytol., 156, 179–194, https://doi.org/10.1046/j.1469-8137.2002.00509.x, 2002.
Göckede, M., Rebmann, C., and Foken, T.: A combination of quality assessment tools for eddy covariance measurements with footprint modelling for the characterisation of complex sites, Agr. Forest. Meteorol., 127, 175–188, 2004.
Göckede, M., Markkanen, T., Hasager, C. B., and Foken, T.: Update of a footprint-based approach for the characterisation of complex measuring sites, Bound.-Lay. Meteorol., 118, 635–655, 2006.
Göckede, M., Thomas, C., Markkanen, T., Mauder, M., Ruppert, J., and Foken, T.: Sensitivity of Lagrangian Stochastic footprints to turbulence statistics, Tellus, 59B, 577–586, 2007.
Goulden, M. L., Munger, J. W., Fan, F.-M., Daube, B. C., and Wofsy, S. C.: Measurements of carbon sequestration by long-term eddy covariance: method and critical evaluation of accuracy, Glob. Change Biol., 2, 159–168, 1996.
Griffith, D. W. T., Leuning, R., Denmead, O. T., and Jamie, I. M.: Air-land exchanges of CO2, CH4 and N2O measured by FTIR spectrometry and micrometeorological techniques, Atmos. Environ., 36, 1833–1842, 2002.
Güsten, H. and Heinrich, G.: On-line measurements of ozone surface fluxes: Part I. Methodology and instrumentation, Atmos. Environ., 30, 897–909, 1996.
Harman, I. N. and Finnigan, J. J.: A simple unified theory for flow in the canopy and roughness sublayer, Bound.-Lay. Meteorol., 123, 339–363, 2007.
Harman, I. N. and Finnigan, J. J.: Scalar concentration profiles in the canopy and roughness sublayer, Bound.-Lay. Meteorol., 129, 323–351, 2008.
Heland, J., Kleffmann, J., Kurtenbach, R., and Wiesen, P.: A new instrument to measure gaseous nitrous acid (HONO) in the atmosphere, Environ. Sci. Technol., 35, 3207–3012, 2001.
Horii, C. P., Munger, J. W., Wofsy, S., Zahniser, M., Nelson, D., and McManus, J. B.: Fluxes of nitrogen oxides over a temperate deciduous forest, J. Geophys. Res., 109, D08305, https://doi.org/10.1029/2003JD004326, 2004.
Jarvis, P. G.: Scaling processes and problems, Plant Cell Environ., 18, 1079–1089, 1995.
Karipot, A., Leclerc, M. Y., Zhang, G., Martin, T., Starr, D., Hollinger, D., McCaughey, H., and Hendrey, G. M.: Nocturnal CO2 exchange over tall forest canopy associated with intermittent low-level jet activity, Theor. Appl. Climatol., 85, 243–248, 2006.
Karipot, A., Leclerc, M. Y., Zhang, G., Lewin, K. F., Nagy, J., Hendrey, G. R., and Starr, D.: Influence of nocturnal low-level jet on turbulence structure and CO2 flux measurements over a forest canopy, J. Geophys. Res., 113, D10102, https://doi.org/10.1029/2007JD009149, 2008.
Karl, T., Harley, P., Emmons, L., Thornton, B., Guenther, A., Basu, C., Turnipseed, A., and Jardine, K.: Efficient atmospheric cleansing of oxidized organic trace gases by vegetation, Science, 330, 816–818, 2010.
Katul, G., Kuhn, G., Schieldge, J., and Hsieh, C.-I.: The ejection-sweep character of scalar fluxes in the unstable surface layer, Bound.-Lay. Meteorol., 83, 1–26, 1997.
Kleffmann, J., Heland, J., Lörzer, J. C., and Wiesen, P.: A new instrument (LOPAP) for the detection of nitrous acid (HONO), Environ. Sci. Pollut. Res., 9, 48–54, 2002.
Lee, X.: On micrometeorological observations of surface-air exchange over tall vegetation, Agr. Forest. Meteorol., 91, 39–49, 1998.
Lee, X., Neumann, H. H., Den Hartog, G., Fuentes, J. D., Black, T. A., Mickle, R. E., Yang, P. C., and Blanken, P. D.: Observation of gravity waves in a boreal forest, Bound.-Lay. Meteorol., 84, 383–398, 1997.
Lenschow, D. H.: Reactive trace species in the boundary layer from a micrometeorological perspective, J. Meteorol. Soc. Jpn., 60, 472–480, 1982.
Lerdau, M. T., Munger, J. W., and Jacob, D. J.: The NO2 flux conundrum, Science, 289, 2291–2293, 2000.
Leuning, R. F. M.: Modeling stomatal behavior and photosynthesis of Eucalyptus grandis, Austr. J. Plant Physiol., 17, 159–175, 1990.
Mahrt, L.: Computing turbulent fluxes near the surface: Needed improvements, Agr. Forest. Meteorol., 150, 501–509, 2010.
Mauder, M. and Foken, T.: Documentation and instruction manual of the eddy covariance software package TK2, Arbeitsergebn., Univ. Bayreuth, Abt. Mikrometeorol., ISSN: 1614-89166, 26, 42 pp., 2004.
Mauder, M. and Foken, T.: Documentation and instruction manual of the eddy covariance software package TK3, Arbeitsergebn., Univ. Bayreuth, Abt. Mikrometeorol., ISSN: 1614-89166, 46, 58 pp., 2011.
Mauder, M., Foken, T., Clement, R., Elbers, J. A., Eugster, W., Grünwald, T., Heusinkveld, B., and Kolle, O.: Quality control of CarboEurope flux data – Part 2: Inter-comparison of eddy-covariance software, Biogeosciences, 5, 451–462, http://dx.doi.org/10.5194/bg-5-451-2008https://doi.org/10.5194/bg-5-451-2008, 2008.
Mayer, J. C., Bargsten, A., Rummel, U., Meixner, F. X., and Foken, T.: Distributed Modified Bowen Ratio method for surface layer fluxes of reactive and non-reactive trace gases, Agr. Forest. Meteorol., 151, 655–668, 2011.
Meixner, F. X., Andreae, M. O., van Dijk, S. M., Gut, A., Rummel, U., Scheibe, M., and Welling, M.: Biosphere-atmosphere exchange of reactive trace gases in a primary rainforest ecosystem: studies on interlinking scales, Rep. Ser. Aerosol Sci., 62A, 269–274, 2003.
Meyers, T. P.: A simulation of the canopy microenvironment using higher order closure principles, Ph.D. thesis, Purdue University, Purdue, 153 pp., 1985.
Meyers, T. P. and Paw U, K. T.: Testing a higher-order closure model for modelling airflow within and above plant canopies, Bound.-Lay. Meteorol., 37, 297–311, 1986.
Meyers, T. P. and Paw U, K. T.: Modelling the plant canopy microenvironment with higher-order closure principles, Agr. Forest. Meteorol., 41, 143–163, 1987.
Mölder, M., Grelle, A., Lindroth, A., and Halldin, S.: Flux-profile relationship over a boreal forest – roughness sublayer correction, Agr. Forest. Meteorol., 98–99, 645–648, 1999.
Monteith, J. L. and Unsworth, M. H.: Principles of environmental physics, 3rd edition, Elsevier, Academic Press, Amsterdam, Boston, 418 pp., 2008.
Mozurkewich, M.: The dissociation constant of ammonium nitrate and its dependence on temperature, relative humidity and particle size, Atmos. Environ. A-Gen., 27, 261–270, 1993.
Nenes, A., Pandis, S. N., and Pilinis, C.: ISORROPIA: A new thermodynamic equilibrium model for multiphase multicomponent inorganic aerosols, Aquat. Geochem., 4, 123–152, 1998.
Orlanski, I.: A rational subdivision of scales for atmospheric processes, B. Am. Meteorol. Soc., 56, 527–530, 1975.
Panofsky, H. A. and Dutton, J. A.: Atmospheric Turbulence – Models and methods for engineering applications, John Wiley and Sons, New York, 397 pp., 1984.
Papale, D., Reichstein, M., Aubinet, M., Canfora, E., Bernhofer, C., Kutsch, W., Longdoz, B., Rambal, S., Valentini, R., Vesala, T., and Yakir, D.: Towards a standardized processing of Net Ecosystem Exchange measured with eddy covariance technique: algorithms and uncertainty estimation, Biogeosciences, 3, 571–583, https://doi.org/10.5194/bg-3-571-2006, 2006.
Paw U, K. T. and Gao, W.: Application of solutions to non-linear energy budget equations, Agr. Forest. Meteorol., 43, 121–145, 1988.
Pryor, S. C., Larsen, S. E., Soerensen, L. L., Barthelmie, R. J., Groenholm, T., Kulmala, M., Launiainen, S., Rannik, U., and Vesala, T.: Particle fluxes over forests: Analyses of flux methods and functional dependencies, J. Geophys. Res., 112, D07205, https://doi.org/07210.01029/02006JD008066, 2007.
Pyles, R. D.: The development and testing of the UCD advanced canopy-atmosphere-soil algorithm (ACASA) for use in climate prediction and field studies, University of California, University of California, Davis, 194 pp., 2000.
Pyles, R. D., Weare, B. C., and Paw U, K. T.: The UCD Advanced Canopy-Atmosphere-Soil Algorithm: comparisons with observations from different climate and vegetation regimes, Q. J. Roy. Meteorol. Soc., 126, 2951–2980, 2000.
Rannik, U., Markkanen, T., Raittila, T., Hari, P., and Vesala, T.: Turbulence statistics inside and above forest: Influence on footprint prediction, Bound.-Lay. Meteorol., 109, 163–189, 2003.
Raupach, M. R. and Thom, A. S.: Turbulence in and above plant canopies, Annu. Rev. Fluid Mech., 13, 97–129, 1981.
Raupach, M. R., Finnigan, J. J., and Brunet, Y.: Coherent eddies and turbulence in vegetation canopies: the mixing-layer analogy, Bound.-Lay. Meteorol., 78, 351–382, 1996.
Rummel, U., Ammann, C., Gut, A., Meixner, F. X., and Andreae, M. O.: Eddy covariance measurements of nitric oxide flux within an Amazonian rainforest, J. Geophys. Res., 107, 8050, https://doi.org/10.1029/2001JD000520, 2002.
Schoonmaker, P. K.: Paleoecological perspectives on ecological scales, in: Ecological Scale, edited by: Peterson, D. L. and Parker, V. T., Columbia University Press, New York, 79–103, 1998.
Serafimovich, A., Siebicke, L., Staudt, K., Lüers, J., Biermann, T., Schier, S., Mayer, J.-C., and Foken, T.: ExchanGE processes in mountainous Regions (EGER): Documentation of the Intensive Observation Period (IOP1), September, 6 to 7 October 2007, Arbeitsergebn., Univ. Bayreuth, Abt. Mikrometeorol., ISSN: 1614-89166, 36, 145 pp., 2008a.
Serafimovich, A., Siebicke, L., Staudt, K., Lüers, J., Hunner, M., Gerken, T., Schier, S., Biermann, T., Rütz, F., Buttlar, J. v., Riederer, M., Falge, E., Mayer, J.-C., and Foken, T.: ExchanGE processes in mountainous Regions (EGER): Documentation of the Intensive Observation Period (IOP2) 1 June to 15 July 2008, Arbeitsergebn., Univ. Bayreuth, Abt. Mikrometeorol., ISSN: 1614-89166, 37, 180 pp., 2008b.
Serafimovich, A., Thomas, C., and Foken, T.: Vertical and horizontal transport of energy and matter by coherent motions in a tall spruce canopy, Bound.-Lay. Meteorol., 140, 429–451, https://doi.org/10.1007/s10546-011-9619-z, 2011.
Shaw, R. H.: Secondary wind speed maxima inside plant canopies, J. Appl. Meteorol., 16, 514–521, 1977.
Siebicke, L.: Footprint synthesis for the FLUXNET site Waldstein/Weidenbrunnen (DE-Bay) during the EGER experiment, Arbeitsergebn., Univ. Bayreuth, Abt. Mikrometeorol., ISSN: 1614-89166, 38, 45 pp., 2008.
Siebicke, L.: Advection at a forest site – an updated approach, Ph.D. thesis, University of Bayreuth, Bayreuth, 113 pp., 2011.
Siebicke, L., Hunner, M., and Foken, T.: Aspects of CO2-advection measurements, Theor. Appl. Climatol., online first, https://doi.org/10.1007/s00704-011-0552-3, 2011a.
Siebicke, L., Steinfeld, G., and Foken, T.: CO2-gradient measurements using a parallel multi-analyzer setup, Atmos. Meas. Tech., 4, 409–423, https://doi.org/10.5194/amt-4-409-2011, 2011b.
Smirnova, T. G., Brown, J. M., and Benjamin, S. G.: Performance of different soil model configurations in simulating ground surface temperature and surface fluxes, Mon. Weather Rev., 125, 1870–1884, 1997.
Smirnova, T. G., Brown, J. M., Benjamin, S. G., and Kim, D.: Parameterization of cold-season processes in the MAPS land-surface scheme, J. Geophys. Res., 105, 4077–4086, 2000.
Sörgel, M., Trebs, I., Serafimovich, A., Moravek, A., Held, A., and Zetzsch, C.: Simultaneous HONO measurements in and above a forest canopy: influence of turbulent exchange on mixing ratio differences, Atmos. Chem. Phys., 11, 841–855, https://doi.org/10.5194/acp-11-841-2011, 2011.
Staudt, K. and Foken, T.: Documentation of reference data for the experimental areas of the Bayreuth Centre for Ecology and Environmental Research (BayCEER) at the Waldstein site, Arbeitsergebn., Univ. Bayreuth, Abt. Mikrometeorol., ISSN: 1614-89166, 35, 35 pp., 2007.
Staudt, K., Serafimovich, A., Siebicke, L., Pyles, R. D., and Falge, E.: Vertical structure of evapotranspiration at a forest site (a case study), Agr. Forest. Meteorol., 151, 709–729, 2011.
Steiner, A. L., Pressley, S. N., Botros, A., Jones, E., Chung, S. H., and Edburg, S. L.: Analysis of coherent structures and atmosphere-canopy coupling strength during the CABINEX field campaign, Atmos. Chem. Phys., 11, 11921–11936, https://doi.org/10.5194/acp-11-11921-2011, 2011.
Stelson, A. W. and Seinfeld, J. H.: Relative-humidity and temperature-dependence of the ammonium-nitrate dissociation-constant, Atmos. Environ., 16, 983–992, 1982.
Stull, R. B.: An Introduction to Boundary Layer Meteorology, Kluwer Acad. Publ., Dordrecht, Boston, London, 666 pp., 1988.
Su, H.-B., Paw U, K. T., and Shaw, R. H.: Development of a coupled leaf and canopy model for the simulation of plant-atmosphere interactions, J. Appl. Meteorol., 35, 733–748, 1996.
Thomas, C. and Foken, T.: Detection of long-term coherent exchange over spruce forest, Theor. Appl. Climatol., 80, 91–104, 2005.
Thomas, C. and Foken, T.: Organised motion in a tall spruce canopy: Temporal scales, structure spacing and terrain effects, Bound.-Lay. Meteorol., 122, 123–147, 2007a.
Thomas, C. and Foken, T.: Flux contribution of coherent structures and its implications for the exchange of energy and matter in a tall spruce canopy, Bound.-Lay. Meteorol., 123, 317–337, 2007b.
Thomas, C., Mayer, J.-C., Meixner, F. X., and Foken, T.: Analysis of the low-frequency turbulence above tall vegetation using a Doppler sodar, Bound.-Lay. Meteorol., 119, 563–587, 2006.
Thomas, R. M., Trebs, I., Otjes, R., Jongejan, P. A. C., Brink, H. T., Phillips, G., Kortner, M., Meixner, F. X., and Nemitz, E.: An automated analyzer to measure aurface-atmosphere exchange fluxes of water soluble inorganic aerosol compounds and reactive trace gases., Environ. Sci. Technol., 43, 1412–1418, https://doi.org/10.1021/es8019403, 2009.
Trebs, I., Meixner, F. X., Slanina, J., Otjes, R., Jongejan, P., and Andreae, M. O.: Real-time measurements of ammonia, acidic trace gases and water-soluble inorganic aerosol species at a rural site in the Amazon Basin, Atmos. Chem. Phys., 4, 967–987, https://doi.org/10.5194/acp-4-967-2004, 2004.
Verhoef, A., McNaughton, K. G., and Jacobs, A. F. G.: A parameterization of momentum roughness length and displacement height for a wide range of canopy densities, Hydrol. Earth Syst. Sci., 1, 81–91, https://doi.org/10.5194/hess-1-81-1997, 1997.
Vogel, H.-J. and Roth, K.: Moving through scales of flow and transport in soil, J. Hydrol., 272, 95–106, 2003.
Wichura, B.: Untersuchung zum Kohlendioxid-Austaisch über einem Fichtenwaldbestand, Hyperbolic-Relaxed-Eddy-Accumulation Messungen für das stabile Kohlenstoffisotop 13C und Waveletanalysen des turbulenten Kohlendioxid-Austauschs, Bayreuther Forum Ökologie, 114, 297 pp., 2009.
Wichura, B., Ruppert, J., Delany, A. C., Buchmann, N., and Foken, T.: Structure of carbon dioxide exchange processes above a spruce Forest, in: Biogeochemistry of Forested Catchments in a Changing Enivironment, A German Gase Study. Ecological Studies, edited by: Matzner, E., Ecological Studies, Springer, Berlin, Heidelberg, 161–176, 2004.
Wilczak, J. M., Oncley, S. P., and Stage, S. A.: Sonic anemometer tilt correction algorithms, Bound.-Lay. Meteorol., 99, 127–150, 2001.
Wolfe, G. M., Thornton, J. A., Bouvier-Brown, N. C., Goldstein, A. H., Park, J.-H., McKay, M., Matross, D. M., Mao, J., Brune, W. H., LaFranchi, B. W., Browne, E. C., Min, K.-E., Wooldridge, P. J., Cohen, R. C., Crounse, J. D., Faloona, I. C., Gilman, J. B., Kuster, W. C., de Gouw, J. A., Huisman, A., and Keutsch, F. N.: The Chemistry of Atmosphere-Forest Exchange (CAFE) Model – Part 2: Application to BEARPEX-2007 observations, Atmos. Chem. Phys., 11, 1269–1294, https://doi.org/10.5194/acp-11-1269-2011, 2011a.
Wolfe, G. M., Thornton, J. A., McKay, M., and Goldstein, A. H.: Forest-atmosphere exchange of ozone: sensitivity to very reactive biogenic VOC emissions and implications for in-canopy photochemistry, Atmos. Chem. Phys., 11, 7875–7891, https://doi.org/10.5194/acp-11-7875-2011, 2011b.
Wolff, V., Trebs, I., Ammann, C., and Meixner, F. X.: Aerodynamic gradient measurements of the NH3-HNO3-NH4NO3 triad using a wet chemical instrument: an analysis of precision requirements and flux errors, Atmos. Meas. Tech., 3, 187–208, https://doi.org/10.5194/amt-3-187-2010, 2010.
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