Ozone and UV-B radiation anticorrelations at fixed solar zenith angles in southern Brazil
Anticorrelation behavior between total ozone column and UV-B radiation was observed for clear sky conditions during the year 2000 at the Southern Space Observatory OES/CRSPE/INPE - MCT (29.44°S, 53.82°W) located in the southern part of Brazil. To eliminate geometrical dependence of the solar angular...
| Autores: | , , , , , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2004 |
| País: | México |
| Recursos: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repositório: | Geofísica Internacional |
| Idioma: | espanhol inglês |
| OAI Identifier: | oai:revistagi.geofisica.unam.mx:article/900 |
| Acesso em linha: | http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/900 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Ozono radiación ultravioleta ángulos solares zenitales fijos cubierta nubosa cielo claro Ozone ultraviolet radiation anticorrelations fixed solar zenith angles cloud coverage , clear sky |
| Resumo: | Anticorrelation behavior between total ozone column and UV-B radiation was observed for clear sky conditions during the year 2000 at the Southern Space Observatory OES/CRSPE/INPE - MCT (29.44°S, 53.82°W) located in the southern part of Brazil. To eliminate geometrical dependence of the solar angular position in relation to the instrument, UV-B radiation was measured at fixed solar zenith angles. The UV-B radiation (280-315 nm) was measured by an Eko Instruments model MS-210W radiometer, and total ozone column data was obtained by a Total Ozone Mapping Spectrometer on board of the NASA Earth Probe satellite. Correlation coefficients varied from R = -0.86 at 70° and 55°, to R = -0.97 at 40°. Ozone variations explained 74 to 94% of the UV-B variability. A 1% reduction in ozone resulted in an increase of about 1% in UV-B for the solar zenith angles studied. |
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