Titre :

Results from the fourth wmo filter radiometer comparison for aerosol optical depth measurements

Auteur(s) :

Kazadzis, Stelios [Auteur]
National Observatory of Athens [NOA]
Physikalisch-Meteorologisches Observatorium Davos/World Radiation Center [PMOD/WRC]
Kouremeti, Natalia [Auteur]
Physikalisch-Meteorologisches Observatorium Davos/World Radiation Center [PMOD/WRC]
Diemoz, Henri [Auteur]
Agenzia Regionale per la Protezione dell'Ambiente Valle D'Aosta [ARPA VDA]
Grobner, Julian [Auteur]
Physikalisch-Meteorologisches Observatorium Davos/World Radiation Center [PMOD/WRC]
Forgan, Bruce W. [Auteur]
Australian Bureau of Meteorology [Melbourne] [BoM]
Campanelli, Monica [Auteur]
Estelles, Victor [Auteur]
Universitat de València = University of Valencia [UV]
Lantz, Kathleen [Auteur]
Cooperative Institute for Research in Environmental Sciences [CIRES]
Michalsky, Joseph [Auteur]
Cooperative Institute for Research in Environmental Sciences [CIRES]
Carlund, Thomas [Auteur]
Swedish Meteorological and Hydrological Institute [SMHI]
Cuevas-Agullo, Emilio [Auteur]
Izaña Atmospheric Research Center [IARC]
Toledano, Carlos [Auteur]
Universidad de Valladolid [Valladolid] [UVa]
Becker, Ralf [Auteur]
Nyeki, Stephan [Auteur]
Physikalisch-Meteorologisches Observatorium Davos/World Radiation Center [PMOD/WRC]
Kosmopoulos, Panagiotis G. [Auteur]
National Observatory of Athens [NOA]
Tatsiankou, Viktar [Auteur]
Vuilleumier, Laurent [Auteur]
Federal Office of Meteorology and Climatology MeteoSwiss
Denn, Frederick M. [Auteur]
NASA Langley Research Center [Hampton] [LaRC]
Ohkawara, Nozomu [Auteur]
Japan Meteorological Agency [JMA]
Ijima, Osamu [Auteur]
Japan Meteorological Agency [JMA]
Goloub, Philippe [Auteur]
Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Raptis, Panagiotis I. [Auteur]
National Observatory of Athens [NOA]
Physikalisch-Meteorologisches Observatorium Davos/World Radiation Center [PMOD/WRC]
Milner, Michael [Auteur]
Australian Bureau of Meteorology [Melbourne] [BoM]
Behrens, Klaus [Auteur]
Barreto, Africa [Auteur]
Izaña Atmospheric Research Center [IARC]
Universidad de Valladolid [Valladolid] [UVa]
Martucci, Giovanni [Auteur]
Federal Office of Meteorology and Climatology MeteoSwiss
Hall, Emiel [Auteur]
Cooperative Institute for Research in Environmental Sciences [CIRES]
Wendell, James [Auteur]
Cooperative Institute for Research in Environmental Sciences [CIRES]
Fabbri, Bryan E. [Auteur]
NASA Langley Research Center [Hampton] [LaRC]
Wehrli, Christoph [Auteur]
Physikalisch-Meteorologisches Observatorium Davos/World Radiation Center [PMOD/WRC]

Titre de la revue :

Atmospheric Chemistry and Physics

Nom court de la revue :

Atmos. Chem. Phys.

Numéro :

18

Date de publication :

2018-03-06

ISSN :

1680-7316

Discipline(s) HAL :

Physique [physics]

Résumé en anglais : [en]

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 ...
Lire la suite >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.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

CNRS
Université de Lille

Collections :

• Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518

Date de dépôt :

2024-01-30T11:45:45Z
2024-02-26T15:19:07Z