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Cede, A.; Luccini, E.; Nunez, L.; Piacentini, R.D.; Blumthaler, M.; Herman, J.R. "TOMS-derived erythemal irradiance versus measurements at the stations of the Argentine UV Monitoring Network" (2004) Journal of Geophysical Research D: Atmospheres. 109(8):D08109 1-11
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Abstract:

The major factors causing differences between satellite-derived and ground-based ultraviolet (UV) erythemal irradiances and doses are discussed. Measurements totaling more than 4700 days during 1997-1999 were obtained at 8 stations (22°S-64°S) of the Argentine UV Monitoring Network. The satellite retrieval uses radiative transfer calculations for cloud- and aerosol-free conditions multiplied by correction factors for clouds and aerosols. Key parameters are total ozone, cloud optical depth, and surface albedo derived from Total Ozone Mapping Spectrometer (TOMS). When no aerosol correction is applied, systematic differences of satellite-derived erythemal irradiance relative to ground-based measurements amount to +1% at a tropical high-altitude Andean location, +10% at stations in the central Pampas, +5% at southern Patagonian sites, and -7% at the southernmost continental and Antarctic stations with varying snow cover. When an aerosol correction is applied by estimating "minimum" and "maximum" aerosol loading, the systematic differences are within ±10% for all "snow-free" stations. To reduce the differences at places with varying snow conditions, an "average surface-albedo climatology" must be used instead the TOMS climatology of minimum albedo. Although the statistical uncertainty of the differences increases with TOMS reflectivity, the systematic difference is independent of TOMS reflectivity for most of the stations, so on average the comparison for cloudy situations is as good as for clear-sky conditions. The comparison for daily erythemal doses gives similar results with smaller statistical uncertainty. Measured uncertainties are in agreement with a theoretical analysis. For most locations, well-characterized ground-based instruments should agree with TOMS satellite estimations within 10% if aerosol corrections are known. Copyright 2004 by the American Geophysical Union.

Registro:

Documento: Artículo
Título:TOMS-derived erythemal irradiance versus measurements at the stations of the Argentine UV Monitoring Network
Autor:Cede, A.; Luccini, E.; Nunez, L.; Piacentini, R.D.; Blumthaler, M.; Herman, J.R.
Filiación:Science Systems/Applications Inc., Lanham, MD, United States
NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States
Depto. de Cie. Atmosfera/los Oceanos, Facultad Ciencias Exactas/Naturales, Universidad Buenos Aires, Capital Federal 1002, Argentina
Serv. Meteorologico Nacl. Argentina, Capital Federal 1002, Argentina
Instituto de Física Rosario, CONICET-Univ. Nacional de Rosario, Rosario 2000, Argentina
Facultad Cie. Exactas Ingenieria/Agr, Universidad Nacional de Rosario, Rosario, Argentina
Institute for Medical Physics, University of Innsbruck, Mullerstrasse 44, Innsbruck A6020, Austria
Palabras clave:Erythemal irradiance; Ground-based measurements; Satellite-derived data; albedo; atmospheric correction; ground-based measurement; irradiance; ozone; radiative transfer; remote sensing; ultraviolet radiation; Argentina; Pampas; Patagonia; South America
Año:2004
Volumen:109
Número:8
Página de inicio:D08109 1
Página de fin:11
DOI: http://dx.doi.org/10.1029/2004JD004519
Título revista:Journal of Geophysical Research D: Atmospheres
Título revista abreviado:J. Geophys. Res. D Atmos.
ISSN:01480227
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01480227_v109_n8_pD081091_Cede

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Citas:

---------- APA ----------
Cede, A., Luccini, E., Nunez, L., Piacentini, R.D., Blumthaler, M. & Herman, J.R. (2004) . TOMS-derived erythemal irradiance versus measurements at the stations of the Argentine UV Monitoring Network. Journal of Geophysical Research D: Atmospheres, 109(8), D08109 1-11.
http://dx.doi.org/10.1029/2004JD004519
---------- CHICAGO ----------
Cede, A., Luccini, E., Nunez, L., Piacentini, R.D., Blumthaler, M., Herman, J.R. "TOMS-derived erythemal irradiance versus measurements at the stations of the Argentine UV Monitoring Network" . Journal of Geophysical Research D: Atmospheres 109, no. 8 (2004) : D08109 1-11.
http://dx.doi.org/10.1029/2004JD004519
---------- MLA ----------
Cede, A., Luccini, E., Nunez, L., Piacentini, R.D., Blumthaler, M., Herman, J.R. "TOMS-derived erythemal irradiance versus measurements at the stations of the Argentine UV Monitoring Network" . Journal of Geophysical Research D: Atmospheres, vol. 109, no. 8, 2004, pp. D08109 1-11.
http://dx.doi.org/10.1029/2004JD004519
---------- VANCOUVER ----------
Cede, A., Luccini, E., Nunez, L., Piacentini, R.D., Blumthaler, M., Herman, J.R. TOMS-derived erythemal irradiance versus measurements at the stations of the Argentine UV Monitoring Network. J. Geophys. Res. D Atmos. 2004;109(8):D08109 1-11.
http://dx.doi.org/10.1029/2004JD004519