Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Atmos. Chem. Phys., 18, 3885-3902, 2018
https://doi.org/10.5194/acp-18-3885-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
20 Mar 2018
Aerosol optical depth in the European Brewer Network
Javier López-Solano1,2,3, Alberto Redondas1,3, Thomas Carlund4,5, Juan J. Rodriguez-Franco1,3, Henri Diémoz6, Sergio F. León-Luis1,3, Bentorey Hernández-Cruz2,3, Carmen Guirado-Fuentes7,1, Natalia Kouremeti4, Julian Gröbner4, Stelios Kazadzis4, Virgilio Carreño1,3, Alberto Berjón2,3, Daniel Santana-Díaz2,3, Manuel Rodríguez-Valido2,3, Veerle De Bock8, Juan R. Moreta9, John Rimmer10, Andrew R. D. Smedley10, Lamine Boulkelia11, Nis Jepsen12, Paul Eriksen12, Alkiviadis F. Bais13, Vadim Shirotov14, José M. Vilaplana15, Keith M. Wilson16, and Tomi Karppinen17 1Izaña Atmospheric Research Center, Agencia Estatal de Meteorología, Tenerife, Spain
2Departamento de Ingeniería Industrial, Universidad de La Laguna, Tenerife, Spain
3Regional Brewer Calibration Center for Europe, Izaña Atmospheric Research Center, Tenerife, Spain
4Physikalisch-Meteorologisches Observatorium Davos/World Radiation Center, Davos, Switzerland
5Swedish Meteorological and Hydrological Institute, Norrköping, Sweden
6Regional Agency for Environmental Protection of the Aosta Valley (ARPA), Saint-Christophe, Italy
7Atmospheric Optics Group, University of Valladolid, Valladolid, Spain
8Royal Meteorological Institute of Belgium, Brussels, Belgium
9Agencia Estatal de Meteorología, Madrid, Spain
10Centre for Atmospheric Science, University of Manchester, Manchester, UK
11National Meteorological Office, Tamanrasset, Algeria
12Danish Meteorological Institute, Copenhagen, Denmark
13Laboratory of Atmospheric Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece
14Scientific and Production Association “Typhoon”, Obninsk, Russia
15National Institute for Aerospace Technology – INTA, Atmospheric Observatory “El Arenosillo”, Huelva, Spain
16Kipp & Zonen, Delft, the Netherlands
17Finnish Meteorological Institute, Sodankyla, Finland
Abstract. Aerosols play an important role in key atmospheric processes and feature high spatial and temporal variabilities. This has motivated scientific interest in the development of networks capable of measuring aerosol properties over large geographical areas in near-real time. In this work we present and discuss results of an aerosol optical depth (AOD) algorithm applied to instruments of the European Brewer Network. This network is comprised of close to 50 Brewer spectrophotometers, mostly located in Europe and adjacent areas, although instruments operating at, for example, South America and Australia are also members. Although we only show results for instruments calibrated by the Regional Brewer Calibration Center for Europe, the implementation of the AOD algorithm described is intended to be used by the whole network in the future. Using data from the Brewer intercomparison campaigns in the years 2013 and 2015, and the period in between, plus comparisons with Cimel sun photometers and UVPFR instruments, we check the precision, stability, and uncertainty of the Brewer AOD in the ultraviolet range from 300 to 320 nm. Our results show a precision better than 0.01, an uncertainty of less than 0.05, and, for well-maintained instruments, a stability similar to that of the ozone measurements. We also discuss future improvements to our algorithm with respect to the input data, their processing, and the characterization of the Brewer instruments for the measurement of AOD.
Citation: López-Solano, J., Redondas, A., Carlund, T., Rodriguez-Franco, J. J., Diémoz, H., León-Luis, S. F., Hernández-Cruz, B., Guirado-Fuentes, C., Kouremeti, N., Gröbner, J., Kazadzis, S., Carreño, V., Berjón, A., Santana-Díaz, D., Rodríguez-Valido, M., De Bock, V., Moreta, J. R., Rimmer, J., Smedley, A. R. D., Boulkelia, L., Jepsen, N., Eriksen, P., Bais, A. F., Shirotov, V., Vilaplana, J. M., Wilson, K. M., and Karppinen, T.: Aerosol optical depth in the European Brewer Network, Atmos. Chem. Phys., 18, 3885-3902, https://doi.org/10.5194/acp-18-3885-2018, 2018.
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The European Brewer Network (EUBREWNET, COST Action ES1207) is comprised of close to 50 instruments and currently provides near-real-time ozone and UV data. Aerosols also play key role in the Earth–atmosphere system and introduce a large uncertainty into our understanding of climate change. In this work we describe and validate a method to incorporate the measurement of aerosols in EUBREWNET. We find that this Brewer network can provide reliable aerosol data across Europe in the UV range.
The European Brewer Network (EUBREWNET, COST Action ES1207) is comprised of close to 50...
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