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	Estimation and Validation of Land Surface Temperatures from Chinese Second-Generation Polar-Orbit FY-3A VIRR Data
	Tang B. H.; Shao, K.; Li, Z. L.; Wu, H.; Nerry, F.; Zhou, G. Q.
	2015
关键词	split-window algorithm thermal infrared data emissivity retrieval satellite measurements modis products radiometer area sea msg/seviri
英文摘要	This work estimated and validated the land surface temperature (LST) from thermal-infrared Channels 4 (10.8 mu m) and 5 (12.0 mu m) of the Visible and Infrared Radiometer (VIRR) onboard the second-generation Chinese polar-orbiting FengYun-3A (FY-3A) meteorological satellite. The LST, mean emissivity and atmospheric water vapor content (WVC) were divided into several tractable sub-ranges with little overlap to improve the fitting accuracy. The experimental results showed that the root mean square errors (RMSEs) were proportional to the viewing zenith angles (VZAs) and WVC. The RMSEs were below 1.0 K for VZA sub-ranges less than 30 degrees or for VZA sub-ranges less than 60 degrees and WVC less than 3.5 g/cm(2), provided that the land surface emissivities were known. A preliminary validation using independently simulated data showed that the estimated LSTs were quite consistent with the actual inputs, with a maximum RMSE below 1 K for all VZAs. An inter-comparison using the Moderate Resolution Imaging Spectroradiometer (MODIS)-derived LST product MOD11_L2 showed that the minimum RMSE was 1.68 K for grass, and the maximum RMSE was 3.59 K for barren or sparsely vegetated surfaces. In situ measurements at the Hailar field site in northeastern China from October, 2013, to September, 2014, were used to validate the proposed method. The result showed that the RMSE between the LSTs calculated from the ground measurements and derived from the VIRR data was 1.82 K.
出处	Remote Sensing
卷	7
期	3
页	3250-3273
收录类别	SCI
语种	英语
ISSN号	2072-4292
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38868]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Tang B. H.,Shao, K.,Li, Z. L.,et al. Estimation and Validation of Land Surface Temperatures from Chinese Second-Generation Polar-Orbit FY-3A VIRR Data. 2015.

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