INVESTIGADORES
ZAGARESE Horacio Ernesto
artículos
Título:
Climatologies and Anomalies of Ozone and UV Radiation at Southern South-America
Autor/es:
DÍAZ; C CAMILION,; R AMRMSTRONG,; R BOOTH,; S CABRERA,; CASICCIA; H FUENZALIDA,; C LOVENGREEN,; A PALADINI,; J PEDRONI,; A ROSALES,; HORACIO ZAGARESE; M VERNET,
Revista:
PHOTOCHEMISTRY AND PHOTOBIOLOGY
Referencias:
Año: 2006 vol. 82 p. 834 - 843
ISSN:
0031-8655
Resumen:
Ozone and UV radiation climatologies, for eight stations located at
different latitudes from tropical to sub-Antarctic regions, were analysed, at
the present paper. Total ozone column was obtained from satellite measurements,
provided by NASA and. irradiances were measured by multi-channel radiometers
(GUV-511, Biospherical Instruments Inc.), which compose the IAI Radiation
Network. The analysed irradiance channels were centered at 305 and 340 nm,
being the first strongly dependent on ozone and the second independent of this
parameter. Daily- integrated irradiance for monthly mean days were analysed,
and the ratio UV-B/UV-A completed the analysis. In general, good agreement with
latitudinal and altitudinal distribution was observed, for UV-B and ozone. UV-A
radiation showed a more complex pattern. Anomalies for 305, 340 and total ozone
column were analysed using auto and cross correlations. The results showed a
larger persistence of total ozone column with time, at all sites. The
relationship of the 305 nm band, with ozone and other factors, resulted highly
dependent on latitude. Band centered at 340 nm showed considerably smaller
persistence at all latitudes.