DOI: 10.1002/2015GL065564
论文题名: The ASTER Global Emissivity Dataset (ASTER GED): Mapping Earth's emissivity at 100 meter spatial scale
作者: Hulley G.C. ; Hook S.J. ; Abbott E. ; Malakar N. ; Islam T. ; Abrams M.
刊名: Geophysical Research Letters
ISSN: 0094-8555
EISSN: 1944-8286
出版年: 2015
卷: 42, 期: 19 起始页码: 7966
结束页码: 7976
语种: 英语
英文关键词: ASTER
; emissivity
Scopus关键词: Atmospheric temperature
; Image resolution
; NASA
; Radiometers
; Spacecraft propulsion
; Surface properties
; Advanced spaceborne thermal emission and reflection radiometer
; ASTER
; Average absolute error
; emissivity
; Long-wave radiation
; Spatial resolution
; Surface temperatures
; Wavelength ranges
; Electromagnetic wave emission
; ASTER
; data set
; desert
; emissivity
; error analysis
; longwave radiation
; mapping method
; MODIS
; satellite data
; spatial resolution
; surface temperature
; Terra (satellite)
; wavelength
英文摘要: Thermal infrared (TIR) data, acquired by instruments on several NASA satellite platforms, are primarily used to estimate the surface temperature/emissivity of the Earth's land surface. One such instrument launched on NASA's Terra satellite in 1999 is the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), which has a spatial resolution of 90 m. Using ASTER data, NASA/Jet Propulsion Laboratory recently released the most detailed emissivity map of the Earth termed the ASTER Global Emissivity Dataset (ASTER GED) that was acquired by processing millions of cloud free ASTER scenes from 2000 to 2008. The ASTER GEDv3 provides an average emissivity at ~100 m and ~1 km, while GEDv4 provides a monthly emissivity from 2000 to 2015 at ~5 km spatial resolution in the wavelength range between 8 and 12 μm. Validation with lab spectra from four desert sites resulted in an average absolute band error of ~1%, compared to current heritage MODIS products that had average absolute errors of 2.4% (Collection 4) and 4.6% (Collection 5). Key Points NASA/JPL released the first global ASTER emissivity map of Earth's surface ASTER GED at 100 m resolution is 2500 times more detailed than any previous data ASTER GED will improve surface temperature and net longwave radiation estimates © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946944464&doi=10.1002%2f2015GL065564&partnerID=40&md5=dd3318ca15d6459840b0a428c03545bc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8171
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Recommended Citation:
Hulley G.C.,Hook S.J.,Abbott E.,et al. The ASTER Global Emissivity Dataset (ASTER GED): Mapping Earth's emissivity at 100 meter spatial scale[J]. Geophysical Research Letters,2015-01-01,42(19).