Mapping finer-resolution land surface emissivity using Landsat images in China

发布时间： 2022-01-20 点击次数：

• 影响因子：0.0
• DOI码：10.1002/2017JD026910
• 发表刊物：Journal of Geophysical Research: Atmospheres
• 关键字：• Generate narrowband and broadband emissivities at a finer resolution (30 m) in China • Create a lookup table of emissivity for land covers in FROM-GLC products • Evaluate the new emissivity using the ASTER emissivity produc
• 摘要：Land surface emissivity is a crucial parameter for obtaining the land surface temperature and estimating the land surface energy budget from remote sensing data. The current emissivity products always have a coarser spatial resolution than the products from the visible and near-infrared data. This study focused on the generation of an emissivity product at a spatial resolution of 30 m using a new global land cover product called Finer-Resolution Observation and Monitoring of Global Land Cover and Landsat images. Summer-average emissivity products in four narrowbands (Landsat 5/Thematic Mapper Band 6, Landsat 7/Enhanced Thematic Mapper Plus Band 6, and Landsat 8 Thermal Infrared Sensor bands 1 and 2) and two broadbands (3–14 μm and 8–13.5 μm) were produced in China. Results illustrated that the narrowband emissivities ranged from 0.95 to 0.99, whereas the broadband emissivities ranged from 0.93 to 0.99 in the study area. Intercomparisons in different places showed that the new emissivity was close to Advanced Spaceborne Thermal Emission and Reflection Radiometer emissivity with a difference of about 0.015 for narrowband emissivity and about 0.02 for broadband emissivity on a regional scale. For application purposes, the emissivities were released in the Worldwide Reference System2 and geographic coordinate systems with several spatial resolutions resampled from its original scale of 30 m.
• 论文类型：期刊论文
• 学科门类：理学
• 一级学科：地理学
• 文献类型：J
• 卷号：122
• 页面范围：6764–6781
• 是否译文：否
• 收录刊物：SCI
• 第一作者：Huazhong Ren
• 全部作者：Rongyuan Liu,Qiming Qin,Wenjie Fan,Le Yu,Chen Du
• 发表时间：2017-07-04