Abstract: Based on sensitivity of total direct solar radiation (DSR) detected by a pyrheliometer for aerosol physical?optical properties, a method is proposed to retrieve the 0.75-?m aerosol optical depth from the radiation, and an ...

Abstract: The fractional factor f of δ-function scaling in the δ-Eddington approximation modifies the fractional scattering into the forward peak. As shown in this paper, reasonably choosing the factor f can yield a great improvement ...

Abstract: There are two important problems in the aerosol optical depth (AOD) retrievals from hourly/daily/monthly accumulated pyrheliometer data, that is, how to select a suitable cosine of the solar zenith angle (?0) and how to ...

Abstract: hree kinds of ?visible? cloud optical thickness τ?matching shortwave direct, global, and scattering solar irradiances (Ids, Igs and Iss)?are defined, which are marked as τd, τg, and τs, respectively. It is found from ...

Abstract: method is proposed to simultaneously calibrate shortwave (0.3?4 ?m) global, direct, and scattering solar irradiance (GSI, DSI, and SSI, respectively) measurements. The method uses the World Radiation Reference (WRR) as a ...