Estimation of cloud base height for FY-4A satellite based on random forest algorithm

被引:7
|
作者
Tan Zhong-Hui [1 ]
Ma Shuo [1 ]
Han Ding [2 ]
Gao Ding [1 ]
Yan Wei [1 ]
机构
[1] Natl Univ Def Technolo, Coll Meteorol & Oceanog, Nanjing 210000, Jiangsu, Peoples R China
[2] PLA 96901, Beijing 100000, Peoples R China
基金
中国国家自然科学基金;
关键词
satellite remote sensing; cloud base height; Random Forest; FY-4A; OCCULTATION;
D O I
10.11972/j.issn.1001-9014.2019.03.020
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Based on upstream products of FY-4A and A-Train satellites data during August and October, 2017, an estimation algorithm of cloud base height for FY-4A has been presented utilizing Random Forest model. The algorithm is evaluated in the comparison with CloudSat and CALIPSO. The results show that cloud base height for top layer cloud can be generated by using upstream products of FY-4A. Compared with CloudSat and CALIPSO, the mean absolute error is less than 1km and the relationship coefficient is bigger than 0.8. The presence of multi-layer clouds may result in underestimate of cloud base height.
引用
收藏
页码:381 / 388
页数:8
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