Comparison of Airborne Passive and Active L-Band System (PALS) Brightness Temperature Measurements to SMOS Observations During the SMAP Validation Experiment 2012 (SMAPVEX12)

被引：28

作者：

Colliander, Andreas ^{[1
]}

Jackson, Thomas ^{[2
]}

McNairn, Heather ^{[3
]}

Chazanoff, Seth ^{[1
]}

Dinardo, Steve ^{[1
]}

Latham, Barron ^{[1
]}

O'Dwyer, Ian ^{[1
]}

Chun, William ^{[1
]}

Yueh, Simon ^{[1
]}

Njoku, Eni ^{[1
]}

机构：

[1] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[2] ARS, USDA, Hydrol & Remote Sensing Lab, Beltsville, MD 20705 USA

[3] Agr & Agri Food Canada, Sci & Technol Branch, Ottawa, ON K1A 0C6, Canada

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2015年 / 12卷 / 04期

关键词：

Passive Active L-band System (PALS); SMAP Validation Experiment 2012 (SMAPVEX12); Soil moisture; Soil Moisture Active Passive (SMAP); Soil Moisture and Ocean Salinity (SMOS); SOIL-MOISTURE; OCEAN SALINITY; SENSOR; RETRIEVAL; ALGORITHM;

D O I：

10.1109/LGRS.2014.2362889

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In this letter, it is shown that spaceborne observations made by the European Space Agency's Soil Moisture and Ocean Salinity (SMOS) satellite agreed closely with the Passive Active L-band System (PALS) brightness temperature acquisitions during the Soil Moisture Active Passive (SMAP) Validation Experiment 2012. The difference between the SMOS and PALS measurements was less than 5 K and 6 K for vertical and horizontal polarizations, respectively, over the relatively homogeneous agricultural areas. These values are less than the SMOS subpixel variability determined from the PALS measurement. This result demonstrated that the measurements obtained in the experiment are scalable to spaceborne brightness temperature observations, are representative of the expected SMAP observations, and will be of value in the development of soil moisture algorithms for spaceborne missions.

引用

页码：801 / 805

页数：5

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