干旱区生态环境知识资源中心(Arid): Validation of ASTER Emissivity Retrieval Using the Mako Airborne TIR Imaging Spectrometer at the Algodones Dune Field in Southern California, USA

Arid

DOI	10.3390/rs12050815
	Validation of ASTER Emissivity Retrieval Using the Mako Airborne TIR Imaging Spectrometer at the Algodones Dune Field in Southern California, USA
	Mushkin, Amit 1,2; Gillespie, Alan R.1; Abbott, Elsa A.3; Batbaatar, Jigjidsurengiin 1; Hulley, Glynn 3; Tan, Howard 3; Tratt, David M.4; Buckland, Kerry N.4
通讯作者	Mushkin, Amit
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2020
卷号	12 期号:5
英文摘要	Validation of emissivity (epsilon) retrievals from spaceborne thermal infrared (TIR) sensors typically requires spatial extrapolations over several orders of magnitude for a comparison between centimeter-scale laboratory epsilon measurements and the common decameter and lower resolution of spaceborne TIR data. In the case of NASA's Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) temperature and epsilon separation algorithm (TES), this extrapolation becomes especially challenging because TES was originally designed for the geologic surface of Earth, which is typically heterogeneous even at centimeter and decameter scales. Here, we used the airborne TIR hyperspectral Mako sensor with its 2.2 m/pixel resolution, to bridge this scaling issue and robustly link between ASTER TES 90 m/pixel emissivity retrievals and laboratory epsilon measurements from the Algodones dune field in southern California, USA. The experimental setup included: (i) Laboratory XRD, grain size, and TIR spectral measurements; (ii) radiosonde launches at the time of the two Mako overpasses for atmospheric corrections; (iii) ground-based thermal measurements for calibration, and (iv) analyses of ASTER day and night epsilon retrievals from 21 different acquisitions. We show that while cavity radiation leads to a 2% to 4% decrease in the effective emissivity contrast of fully resolved scene elements (e.g., slipface slopes and interdune flats), spectral variability of the site when imaged at 90 m/pixel is below 1%, because at this scale the dune field becomes an effectively homogeneous mixture of the different dune elements. We also found that adsorption of atmospheric moisture to grain surfaces during the predawn hours increased the effective epsilon of the dune surface by up to 0.04. The accuracy of ASTER's daytime emissivity retrievals using each of the three available atmospheric correction protocols was better than 0.01 and within the target performance of ASTER's standard emissivity product. Nighttime emissivity retrievals had lower precision (<0.03) likely due to residual atmospheric effects. The water vapor scaling (WVS) atmospheric correction protocol was required to obtain accurate (<0.01) nighttime ASTER emissivity retrievals.
英文关键词	ASTER Mako TES algorithm temperature emissivity validation Algodones
类型	Article
语种	英语
国家	USA ; Israel
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000531559300070
WOS关键词	SPACEBORNE THERMAL EMISSION ; REFLECTION RADIOMETER ASTER ; ATMOSPHERIC CORRECTION ; STANDARD PRODUCTS ; TEMPERATURE ; SEPARATION ; DESERT ; MODEL ; MODIS
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318889
作者单位	1.Univ Washington, Dept Earth & Space Sci, Box 351310, Seattle, WA 98195 USA; 2.Geol Survey Israel, 32 Yishayahu Leibovitz St, Jerusalem 9692100, Israel; 3.Jet Prop Lab, Pasadena, CA 91109 USA; 4.Aerosp Corp, El Segundo, CA 90245 USA
推荐引用方式 GB/T 7714	Mushkin, Amit,Gillespie, Alan R.,Abbott, Elsa A.,et al. Validation of ASTER Emissivity Retrieval Using the Mako Airborne TIR Imaging Spectrometer at the Algodones Dune Field in Southern California, USA[J],2020,12(5).
APA	Mushkin, Amit.,Gillespie, Alan R..,Abbott, Elsa A..,Batbaatar, Jigjidsurengiin.,Hulley, Glynn.,...&Buckland, Kerry N..(2020).Validation of ASTER Emissivity Retrieval Using the Mako Airborne TIR Imaging Spectrometer at the Algodones Dune Field in Southern California, USA.REMOTE SENSING,12(5).
MLA	Mushkin, Amit,et al."Validation of ASTER Emissivity Retrieval Using the Mako Airborne TIR Imaging Spectrometer at the Algodones Dune Field in Southern California, USA".REMOTE SENSING 12.5(2020).