Results from the Fourth WMO Filter Radiometer Comparison for aerosol optical depth measurements
Autor: | Kazadzis, Stelios, Kouremeti, Natalia, Diémoz, Henri, Gröbner, Julian, Forgan, Bruce W., Campanelli, Monica, Estellés, Victor, Lantz, Kathleen, Michalsky, Joseph, Carlund, Thomas, Cuevas, Emilio, Toledano, Carlos, Becker, Ralf, Nyeki, Stephan, Kosmopoulos, Panagiotis G., Tatsiankou, Viktar, Vuilleumier, Laurent, Denn, Frederick M., Ohkawara, Nozomu, Ijima, Osamu, Goloub, Philippe, Raptis, Panagiotis I., Milner, Michael, Behrens, Klaus, Barreto, Africa, Martucci, Giovanni, Hall, Emiel, Wendell, James, Fabbri, Bryan E., Wehrli, Christoph |
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Přispěvatelé: | Laboratoire d’Optique Atmosphérique - UMR 8518 (LOA), Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS) |
Jazyk: | angličtina |
Rok vydání: | 2018 |
Předmět: |
Earth's energy budget
Termodinàmica atmosfèrica Atmospheric Science Angstrom exponent 010504 meteorology & atmospheric sciences Meteorologi och atmosfärforskning 01 natural sciences Aerosol optical depth lcsh:Chemistry 010309 optics symbols.namesake Aerosol networks 0103 physical sciences Rayleigh scattering radiometry field campaign Radiation balance 0105 earth and related environmental sciences Remote sensing Aerosols Radiometer lcsh:QC1-999 Aerosol Spectroradiometer lcsh:QD1-999 13. Climate action [SDU]Sciences of the Universe [physics] Meteorology and Atmospheric Sciences symbols Environmental science Sun photometers lcsh:Physics Water vapor |
Zdroj: | Kazadzis, Stelios Kouremeti, Natalia Diémoz, Henri Gröbner, Julian Forgan, Bruce W. Campanelli, M. Estellés Leal, Víctor Lantz, Kathleen Michalsky, Joseph Carlund, Thomas Cuevas-Agulló, Emilio Toledano, Carlos Becker, Ralf Nyeki, Stephan Kosmopoulos, Panagiotis G. Tatsiankou, Viktar Vuilleumier, Laurent Denn, Frederick M. Ohkawara, Nozomu Ijima, Osamu Goloub, Philippe Raptis, Panagiotis I. Milner, Michael Behrens, Klaus Barreto, Africa Martucci, Giovanni Hall, Emiel Wendell, James Fabbri, Bryan E. Wehrli, Christoph 2018 Results from the Fourth WMO Filter Radiometer Comparison for aerosol optical depth measurements Atmospheric Chemistry and Physics 18 3185 3201 Atmospheric Chemistry and Physics Atmospheric Chemistry and Physics, 2018, 18, pp.3185-3201. ⟨10.5194/acp-18-3185-2018⟩ ARCIMIS. Archivo Climatológico y Meteorológico Institucional (AEMET) Agencia Estatal de Meteorología (AEMET) Atmospheric chemistry and physics 18 (2018): 3185–3201. doi:10.5194/acp-18-3185-2018 info:cnr-pdr/source/autori:Kazadzis, Stelios; Kazadzis, Stelios; Kouremeti, Natalia; Diémoz, Henri; Gröbner, Julian; Forgan, Bruce W.; Campanelli, Monica; Estellés, Victor; Lantz, Kathleen; Michalsky, Joseph; Carlund, Thomas; Cuevas, Emilio; Toledano, Carlos; Becker, Ralf; Nyeki, Stephan; Kosmopoulos, Panagiotis G.; Tatsiankou, Viktar; Vuilleumier, Laurent; Denn, Frederick M.; Ohkawara, Nozomu; Ijima, Osamu; Goloub, Philippe; Raptis, Panagiotis I.; Raptis, Panagiotis I.; Milner, Michael; Behrens, Klaus; Barreto, Africa; Barreto, Africa; Barreto, Africa; Martucci, Giovanni; Hall, Emiel; Wendell, James; Fabbri, Bryan E.; Wehrli, Christoph/titolo:Results from the Fourth WMO Filter Radiometer Comparison for aerosol optical depth measurements/doi:10.5194%2Facp-18-3185-2018/rivista:Atmospheric chemistry and physics (Print)/anno:2018/pagina_da:3185/pagina_a:3201/intervallo_pagine:3185–3201/volume:18 Atmospheric Chemistry and Physics, Vol 18, Pp 3185-3201 (2018) RODERIC. Repositorio Institucional de la Universitat de Valéncia instname |
ISSN: | 1680-7316 1680-7324 |
Popis: | This study presents the results of the Fourth Filter Radiometer Comparison that was held in Davos, Switzerland, between 28 September and 16 October 2015. Thirty filter radiometers and spectroradiometers from 12 countries participated including reference instruments from global aerosol networks. The absolute differences of all instruments compared to the reference have been based on the World Meteorological Organization (WMO) criterion defined as follows: 95% of the measured data has to be within 0.005 ± 0.001∕m (where m is the air mass). At least 24 out of 29 instruments achieved this goal at both 500 and 865 nm, while 12 out of 17 and 13 out of 21 achieved this at 368 and 412 nm, respectively. While searching for sources of differences among different instruments, it was found that all individual differences linked to Rayleigh, NO2, ozone, water vapor calculations and related optical depths and air mass calculations were smaller than 0.01 in aerosol optical depth (AOD) at 500 and 865 nm. Different cloud-detecting algorithms used have been compared. Ångström exponent calculations showed relatively large differences among different instruments, partly because of the high calculation uncertainty of this parameter in low AOD conditions. The overall low deviations of these AOD results and the high accuracy of reference aerosol network instruments demonstrated a promising framework to achieve homogeneity, compatibility and harmonization among the different spectral AOD networks in the near future. |
Databáze: | OpenAIRE |
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