Articles | Volume 12, issue 11
https://doi.org/10.5194/amt-12-6037-2019
https://doi.org/10.5194/amt-12-6037-2019
Research article
 | 
21 Nov 2019
Research article |  | 21 Nov 2019

Retrieval of cloud properties from spectral zenith radiances observed by sky radiometers

Pradeep Khatri, Hironobu Iwabuchi, Tadahiro Hayasaka, Hitoshi Irie, Tamio Takamura, Akihiro Yamazaki, Alessandro Damiani, Husi Letu, and Qin Kai

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Cited articles

Campanelli, M., Nakajima,T., and Olivieri, B.: Determination of the solar calibration constant for a sun-sky radiometer: Proposal of an in situ procedure, Appl. Optics, 43, 651–659, https://doi.org/10.1364/AO.43.000651, 2004. 
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Short summary
In an attempt to make cloud retrievals from the surface more common and convenient, we developed a cloud retrieval algorithm applicable for sky radiometers. It is based on an optimum method by fitting measured transmittances with modeled values. Further, a cost-effective and easy-to-use calibration procedure is proposed and validated using data obtained from the standard method. A detailed error analysis and quality assessment are also performed.