Comparison of monthly means daily UVA from CERES with ground-based measurements.

FACUNDO ORTE; FACUNDO CARMONA; CLAUDIO LIBERTELI; JUAN LUCAS BALI; RAUL D'ELIA; ELIAN WOLFRAM; ANABELA LUSI

San Miguel de Tucumán

Congreso; ARGENCON 2018: Congreso Bienal de IEEE Argentina 2018; 2018

IEEE

The importance to monitor surface UVA solarradiation is mainly associated with its consequences over thehuman health as well as plants growth. High-quality ground-based measurements of UVA present better accuracy withrespect to satellite retrievals. On the other hand, satellite dataallows a better spatial coverage, something of great importanceon areas with lack of ground-based monitoring points as inArgentina. Thus, the use of satellite products validated withground-based measurements allows to geographicallyextending the analysis to regions without terrain instruments.The aim of this work is to evaluate the monthly mean of dailyUVA product from CERES (CERES_SYN1deg) by mean ofcomparisons with ground-based measurements from UVAradiometers in four sites of the SAVER-net along Argentinafor different periods, depending on the available ground-baseddataset. The CERES monthly mean daily UVA presents verygood correlation with respect to ground-based instruments forall sites with correlation coefficients higher than 0.98. Themaximum mean bias error reaches ~21% in the worst case.Although it is needed longer ground-based datasets to validatesatellite data, we can conclude that the monthly daily meanUVA from CERES presents good agreement with respect toground-based measurements. Finally, monthly climatology wascalculated and maps of these parameters were developed toanalyse the seasonal variability along Argentina.