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by zhangcz » Thu Aug 03, 2023 4:54 am America/New_York
I want to implement the Particulate Inorganic Carbon (PIC) product. But I've got a problem when I learn the source code of the PIC algorithm. The source code "l1rec->csolz[ip]", which I don't know how to get or calculate "csolz"? (The source code I mention is in calcite.c--calcite_3b())
The l2gen scan line attributes variable csolz is not the same as the l1rec->csol_z variable. The former is the solar zenith angle for the center of the scan line, the later (required by the algorithm) is the cosine of the solar zenith angle at each pixel. It is not a product that l2gen can output, although solar zenith angle (solz) can be output, to which you can apply the cosine function.