PERSONAL DE APOYO
DEFERRARI guillermo Alejandro
artículos
Título:
A Model to Extend Spectral and multi-wavelength UV irradiances Time Series. Model Development and Validation
Autor/es:
DIAZ SUSANA; NELSON D; DEFERRARI GUILLERMO; CAMILION CAROLINA
Revista:
JOURNAL OF GEOPHYSICAL RESEARCH
Referencias:
Año: 2003 vol. 108 p. 1 - 12
ISSN:
0148-0227
Resumen:
Measurements of spectral and multichannel UV radiation became more common in
the middle and late eighties after the discovery of the ozone hole, but time series for
these measurements are still relatively short for the determination of trends to be applied in
geophysical and biological studies. However, systematic measurements of total column
ozone have been performed since the late 1950s at several stations, and global coverage
has been available since the late 1970s. Also, long-term time series of broadband
instruments (Pyranometers, UV and erythemally weighted) are available from many sites
around the world. In this paper a multiregressive model that enables the inference of
spectral or narrow band UV irradiances from total ozone column and broadband
irradiance, in places where relatively short time series of UV spectral irradiances are
available, is proposed. To test the model, measurements of irradiances performed at three
of the stations in the NSF UV Radiation Monitoring Network, under all weather, solar
zenith angle and surface conditions, were used. The model generated very good results
over a wide variety of situations. Pyranometer data from the NOAA/CMDL surface
radiation budget database for South Pole and Barrow Stations were used to estimate daily
integrated narrow band irradiances. A time series of monthly means for the narrowband
(303.030307.692 nm) were then computed, dating back to the late 1970s. INDEXINDEX
TERMS: 1630 Global Change: Impact phenomena; 1694 Global Change: Instruments and techniques; 3309
Meteorology and Atmospheric Dynamics: Climatology (1620); KEYWORDS: UV-B Irradiances, Ozone, Ozone
depletion, UV irradiance modeling, Multiregressive modelERMS: 1630 Global Change: Impact phenomena; 1694 Global Change: Instruments and techniques; 3309
Meteorology and Atmospheric Dynamics: Climatology (1620); KEYWORDS: UV-B Irradiances, Ozone, Ozone
depletion, UV irradiance modeling, Multiregressive modelKEYWORDS: UV-B Irradiances, Ozone, Ozone
depletion, UV irradiance modeling, Multiregressive model