INVESTIGADORES
ZAGARESE Horacio Ernesto
artículos
Título:
Multi-channel radiometers calibration. A new approach.
Autor/es:
DIAZ, SUSANA; BOOTH, CHARLES R.; ARMSTRONG, ROY; BRUNAT, CLAUDIO; CABRERA, SERGIO; CAMILION, CAROLINA; CASSICCIA, CLAUDIO; DEFERRARI, GUILLERMO; FUENZALIDA, HUMBERTO; LOVENGREEN, CHARLOTTE; ALEJANDRO PALADINI; PEDRONI, JORGE; ROSALES, ALEJANDRO; ZAGARESE, HORACIO; VERNET, MARIA
Revista:
APPLIED OPTICS
Referencias:
Año: 2005 vol. 44 p. 5374 - 5380
ISSN:
0003-6935
Resumen:
The error in irradiance measured with Sun-calibrated multichannel radiometers may be large when thesolarzenithangle(SZA)increases.Thiscouldbeparticularlydetrimentalinradiometersinstalledatmidand high latitudes, where SZAs at noon are larger than 50° during part of the year. When a multi-regressive methodology, including the total ozone column and SZA, was applied in the calculation of thecalibrationconstant,animportantimprovementwasobserved.Bycombiningtwodifferentequations,animprovementwasobtainedatalmostalltheSZAsinthecalibration.Anindependenttestthatcomparedthe irradiance of a multichannel instrument and a spectroradiometer installed in Ushuaia, Argentina,was used to confirm the results. © 2005 Optical Society of America