Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.509 IF 5.509
  • IF 5-year value: 5.689 IF 5-year 5.689
  • CiteScore value: 5.44 CiteScore 5.44
  • SNIP value: 1.519 SNIP 1.519
  • SJR value: 3.032 SJR 3.032
  • IPP value: 5.37 IPP 5.37
  • h5-index value: 86 h5-index 86
  • Scimago H index value: 161 Scimago H index 161
Volume 18, issue 11 | Copyright
Atmos. Chem. Phys., 18, 7913-7931, 2018
https://doi.org/10.5194/acp-18-7913-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 06 Jun 2018

Research article | 06 Jun 2018

Global soil consumption of atmospheric carbon monoxide: an analysis using a process-based biogeochemistry model

Licheng Liu1, Qianlai Zhuang1,2, Qing Zhu1,3, Shaoqing Liu1,4, Hella van Asperen5, and Mari Pihlatie6,7 Licheng Liu et al.
  • 1Department of Earth, Atmospheric, Planetary Sciences, Purdue University, West Lafayette, IN 47907, USA
  • 2Department of Agronomy, Purdue University, West Lafayette, IN 47907, USA
  • 3Climate Sciences Department, Climate & Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
  • 4Department of Earth Sciences, University of Minnesota, Minneapolis, MN 55455, USA
  • 5Institute of Environmental Physics, University of Bremen, Otto-Hahn-Allee 1, Bremen 28359, Germany
  • 6Department of Physics, University of Helsinki, P.O. Box 48, 00014 University of Helsinki, Finland
  • 7Department of Forest Sciences, P.O. Box 27, 00014 University of Helsinki, Finland

Abstract. Carbon monoxide (CO) plays an important role in controlling the oxidizing capacity of the atmosphere by reacting with OH radicals that affect atmospheric methane (CH4) dynamics. We develop a process-based biogeochemistry model to quantify the CO exchange between soils and the atmosphere with a 5min internal time step at the global scale. The model is parameterized using the CO flux data from the field and laboratory experiments for 11 representative ecosystem types. The model is then extrapolated to global terrestrial ecosystems using monthly climate forcing data. Global soil gross consumption, gross production, and net flux of the atmospheric CO are estimated to be from −197 to −180, 34 to 36, and −163 to −145TgCOyr−1 (1Tg = 1012g), respectively, when the model is driven with satellite-based atmospheric CO concentration data during 2000–2013. Tropical evergreen forest, savanna and deciduous forest areas are the largest sinks at 123TgCOyr−1. The soil CO gross consumption is sensitive to air temperature and atmospheric CO concentration, while the gross production is sensitive to soil organic carbon (SOC) stock and air temperature. By assuming that the spatially distributed atmospheric CO concentrations ( ∼ 128ppbv) are not changing over time, the global mean CO net deposition velocity is estimated to be 0.16–0.19mms−1 during the 20th century. Under the future climate scenarios, the CO deposition velocity will increase at a rate of 0.0002–0.0013mms−1yr−1 during 2014–2100, reaching 0.20–0.30mms−1 by the end of the 21st century, primarily due to the increasing temperature. Areas near the Equator, the eastern US, Europe and eastern Asia will be the largest sinks due to optimum soil moisture and high temperature. The annual global soil net flux of atmospheric CO is primarily controlled by air temperature, soil temperature, SOC and atmospheric CO concentrations, while its monthly variation is mainly determined by air temperature, precipitation, soil temperature and soil moisture.

Download & links
Publications Copernicus
Download
Short summary
carbon monoxide (CO) plays an important role in atmosphere. We developed a model to quantify soil CO exchanges with the atmosphere. The simulation is conducted for various ecosystems on a global scale during the 20th and 21st centuries. We found that areas near the Equator, the eastern US, Europe and eastern Asia are the largest sinks due to optimum soil moisture and high temperature. This study will benefit the modeling of the global climate and atmospheric chemistry.
carbon monoxide (CO) plays an important role in atmosphere. We developed a model to quantify...
Citation
Share