Impact Factor:0.0
DOI number:10.1002/2017JD026910
Journal:Journal of Geophysical Research: Atmospheres
Key Words:• 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
Abstract: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.
Indexed by:Journal paper
Discipline:Natural Science
First-Level Discipline:Geography
Document Type:J
Volume:122
Page Number:6764–6781
Translation or Not:no
Included Journals:SCI
First Author:Huazhong Ren
All the Authors:Rongyuan Liu,Qiming Qin,Wenjie Fan,Le Yu,Chen Du
Date of Publication:2017-07-04