Evaluation and Analysis of the Cloud Phase Product Derived from FY 3A/VIRR
FY 3A/VIRR cloud phase retrievals were evaluated by Terra/MODIS cloud phase products, with the single and complex cloud conditions discussed. In this study, consistency comparison, discrepancy image display as well as overlay display method for the two kinds of products were all employed. The analysis results show that the two kinds of cloud phase products have good consistency under the simple cloud condition, and the consistency rate is close to 85%, but under the complex cloud condition, the consistency between the two kinds of cloud phase products decreases because the Terra/MODIS cloud phase products have a lot of undefined phase cloud pixels. The different pixels of the FY 3A/VIRR and Terra/MODIS cloud phase products mainly distribute in the edges of clouds or the boundary parts of different cloud phases. The different cloud phase algorithm and cloud categorizing methods are the main cause for the different cloud phases between FY 3A/VIRR and Terra/MODIS.