Application of the SKYRAD Improved Langley plot method for the in situ calibration of CIMEL Sun-sky photometers

被引：62
作者：
Campanelli, Monica
Estelles, Victor
Tomasi, Claudio
Nakajima, Teruyuki
Malvestuto, Vincenzo
Martinez-Lozano, Jose Antonio
机构：
[1] Italian Natl Res Council, Inst Atmospher Sci & Climate, I-00133 Roma Tor Vergata, Italy
[2] Univ Valencia, Fac Fis, Dept Termodinam, E-46100 Burjassot, Spain
[3] Italian Natl Res Council, Inst Atmospher Sci & Climate, I-40129 Bologna, Italy
[4] Univ Tokyo, Ctr Climate Syst Res, Chiba 2778568, Japan
来源：
APPLIED OPTICS | 2007年 / 46卷 / 14期
关键词：
D O I：
10.1364/AO.46.002688
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The in situ procedure for determining the solar calibration constants, originally developed for the PREDE Sun-sky radiometers and based on a modified version of the Langley plot, was applied to a CIMEL instrument located in Valencia, Spain, not integrated into AERONET. Taking into account the different mechanical and electronic characteristics of the two radiometers, the method was adapted to the characteristics of the CIMEL instrument. The iterative procedure for the determination of the solar calibration constants was applied to a 3-year data set. The results were compared with the two sets of experimental calibration constants determined during this period using the standard Langley plot method. The agreement was found to be consistent with the experimental errors, and the method can definitely also be used to determine the solar calibration constant for the CIMEL instrument, improving its calibration. The method can be used provided the radiometer is previously calibrated for diffuse radiance using a standard lamp. (c) 2007 Optical Society of America.
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收藏
页码：2688 / 2702
页数：15
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