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DOI10.1109/TGRS.2017.2656859
A Comparative Study of the SMAP Passive Soil Moisture Product With Existing Satellite-Based Soil Moisture Products
Burgin, Mariko S.1; Colliander, Andreas1; Njoku, Eni G.1; Chan, Steven K.1; Cabot, Francois2; Kerr, Yann H.2; Bindlish, Rajat3; Jackson, Thomas J.4; Entekhabi, Dara5,6; Yueh, Simon H.1
通讯作者Burgin, Mariko S.
来源期刊IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
ISSN0196-2892
EISSN1558-0644
出版年2017
卷号55期号:5页码:2959-2971
英文摘要

The NASA Soil Moisture Active Passive (SMAP) satellite mission was launched on January 31, 2015 to provide global mapping of high-resolution soil moisture and freeze-thaw state every 2-3 days using an L-band (active) radar and an L-band (passive) radiometer. The Level 2 radiometer-only soil moisture product (L2_SM_P) provides soil moisture estimates posted on a 36-km Earth-fixed grid using brightness temperature observations from descending passes. This paper provides the first comparison of the validated-release L2_SM_P product with soil moisture products provided by the Soil Moisture and Ocean Salinity (SMOS), Aquarius, Advanced Scatterometer (ASCAT), and Advanced Microwave Scanning Radiometer 2 (AMSR2) missions. This comparison was conducted as part of the SMAP calibration and validation efforts. SMAP and SMOS appear most similar among the five soil moisture products considered in this paper, overall exhibiting the smallest unbiased root-mean-square difference and highest correlation. Overall, SMOS tends to be slightly wetter than SMAP, excluding forests where some differences are observed. SMAP and Aquarius can only be compared for a little more than two months; they compare well, especially over low to moderately vegetated areas. SMAP and ASCAT show similar overall trends and spatial patterns with ASCAT providing wetter soil moistures than SMAP over moderate to dense vegetation. SMAP and AMSR2 largely disagree in their soil moisture trends and spatial patterns; AMSR2 exhibits an overall dry bias, while desert areas are observed to be wetter than SMAP.


英文关键词Level 2 radiometer-only soil moisture product (L2_SM_P) microwave remote sensing soil moisture Soil Moisture Active Passive (SMAP) Soil Moisture and Ocean Salinity (SMOS)
类型Article
语种英语
国家USA ; France
收录类别SCI-E
WOS记录号WOS:000399943400039
WOS关键词IN-SITU OBSERVATIONS ; SURFACE PARAMETERS ; INITIAL ASSESSMENT ; CLIMATE MODELS ; LAND-SURFACE ; RESOLUTION ; SALINITY ; DATABASE ; MISSION
WOS类目Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology
来源机构French National Research Institute for Sustainable Development
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/199579
作者单位1.CALTECH, NASA Jet Prop Lab, Pasadena, CA 91109 USA;
2.Ctr Natl Etud Spatiales, Ctr Etud Spatiales Biosphere, F-31401 Toulouse, France;
3.NASA Goddard Space Flight Ctr, Greenbelt, MD 20771 USA;
4.ARS, USDA, Hydrol & Remote Sensing Lab, Beltsville, MD 20705 USA;
5.MIT, Dept Civil & Environm Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA;
6.MIT, Dept Earth Atmospher & Planetary Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA
推荐引用方式
GB/T 7714
Burgin, Mariko S.,Colliander, Andreas,Njoku, Eni G.,et al. A Comparative Study of the SMAP Passive Soil Moisture Product With Existing Satellite-Based Soil Moisture Products[J]. French National Research Institute for Sustainable Development,2017,55(5):2959-2971.
APA Burgin, Mariko S..,Colliander, Andreas.,Njoku, Eni G..,Chan, Steven K..,Cabot, Francois.,...&Yueh, Simon H..(2017).A Comparative Study of the SMAP Passive Soil Moisture Product With Existing Satellite-Based Soil Moisture Products.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,55(5),2959-2971.
MLA Burgin, Mariko S.,et al."A Comparative Study of the SMAP Passive Soil Moisture Product With Existing Satellite-Based Soil Moisture Products".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 55.5(2017):2959-2971.
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