A Cloud Detection Algorithm Over Land Based on the Polarized Characteristics Difference Between Cloudless and Cloud Targets

doi:10.1029/2019ea000677

CIOMP OpenIR

	A Cloud Detection Algorithm Over Land Based on the Polarized Characteristics Difference Between Cloudless and Cloud Targets
	X.Gao; X.Hu; W.Fang; D.K.Yin
	2019
发表期刊	Earth and Space Science
卷号	6 期号:9 页码:1769-1780
摘要	The accurate identification of cloud over land is one of the key issues of the satellite data processing and the product retrievals. This paper describes a new cloud detection algorithm based on Level 1 data of Polarization and Directionality of Earth's Reflectance. The simulation of multiangular normalized polarized reflectance is done for cloudless targets over land before the cloud identification processing. First, the Normalized Difference Vegetation Index over land and reflectance of 670 nm are used as two initial criterions for the cloud mask. Then, the difference between the simulation and Polarization and Directionality of Earth's Reflectance observation of polarized reflectance is used as the third criterion to distinguish cloudless pixels from cloud ones. And this algorithm is proved to be more convenient and effective. This algorithm is also applied to cloud mask processing of the Multi-Angular Polarization Imager (onboard the Tiangong-2) observation. The results show that this algorithm can effectively detect cloud targets over land, and its consistency with Polarization and Directionality of Earth's Reflectance official cloud mask products is about 90%. This algorithm can provide reliable cloud mask products for the retrieval of optical and physical properties of land aerosol using Multi-Angular Polarization Imager data.
关键词	cloud detection,multiangular polarized remote sensing data,phase,function characteristics,POLDER,MAPI
DOI	10.1029/2019ea000677
URL	查看原文
收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63372
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X.Gao,X.Hu,W.Fang,et al. A Cloud Detection Algorithm Over Land Based on the Polarized Characteristics Difference Between Cloudless and Cloud Targets[J]. Earth and Space Science,2019,6(9):1769-1780.
APA	X.Gao,X.Hu,W.Fang,&D.K.Yin.(2019).A Cloud Detection Algorithm Over Land Based on the Polarized Characteristics Difference Between Cloudless and Cloud Targets.Earth and Space Science,6(9),1769-1780.
MLA	X.Gao,et al."A Cloud Detection Algorithm Over Land Based on the Polarized Characteristics Difference Between Cloudless and Cloud Targets".Earth and Space Science 6.9(2019):1769-1780.

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