Arid
DOI10.1109/JSTARS.2016.2632306
Triple Collocation Analysis of Soil Moisture From Metop-A ASCAT and SMOS Against JRA-55 and ERA-Interim
Miyaoka, Kengo1; Gruber, Alexander2; Ticconi, Francesca3; Hahn, Sebastian2; Wagner, Wolfgang2; Figa-Saldana, Julia3; Anderson, Craig3
通讯作者Miyaoka, Kengo
来源期刊IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
ISSN1939-1404
EISSN2151-1535
出版年2017
卷号10期号:5页码:2274-2284
英文摘要

This study investigates the quality of Advanced Scatterometer (ASCAT) surface soil moisture (SSM) retrievals with respect to other SSM products derived from the passive Soil Moisture and Ocean Salinity (SMOS) mission and two reanalysis datasets, i.e., the JRA-55 and the ERA-Interim. In particular, the purposes of this study are to 1) characterize the global error structure of the satellite products, 2) understand the spatiotemporal variability of SSM at global scale, and 3) investigate in which areas the assimilation of satellite data may add value to reanalysis. For these purposes, we applied standard statistical methods as well as triple collocation analysis (TCA) for estimating signal-to-noise ratios (SNR). In line with previous studies, we find large and spatially variable biases between all four datasets, but overall spatiotemporal dynamics as reflected in Hovmoller diagrams agree well. With the exception of arid and semiarid environments, ASCAT performs better than SMOS in terms of both its correlation with the models and the SNR. As a result of TCA, we recognize the potential areas for assimilation of ASCAT data, characterized by a high SNR of the satellite data compared to the models, to be the savanna regions in Africa and Central Asia, southwestern North America, and eastern Australia.


英文关键词Advanced Scatterometer (ASCAT) data assimilation soil moisture Soil Moisture and Ocean Salinity (SMOS) triple collocation
类型Article
语种英语
国家Japan ; Austria ; Germany
收录类别SCI-E
WOS记录号WOS:000406418700016
WOS关键词SIMPLE BIOSPHERE MODEL ; IN-SITU ; ASSIMILATION ; PERFORMANCE ; RETRIEVALS ; PRODUCTS ; WETNESS ; ERRORS
WOS类目Engineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向Engineering ; Physical Geography ; 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/2XILL650/199568
作者单位1.Japan Meteorol Agcy, Tokyo 1008122, Japan;
2.Vienna Univ Technol, Dept Geodesy & Geoinformat, A-1040 Vienna, Austria;
3.EUMETSAT, D-64295 Darmstadt, Germany
推荐引用方式
GB/T 7714
Miyaoka, Kengo,Gruber, Alexander,Ticconi, Francesca,et al. Triple Collocation Analysis of Soil Moisture From Metop-A ASCAT and SMOS Against JRA-55 and ERA-Interim[J],2017,10(5):2274-2284.
APA Miyaoka, Kengo.,Gruber, Alexander.,Ticconi, Francesca.,Hahn, Sebastian.,Wagner, Wolfgang.,...&Anderson, Craig.(2017).Triple Collocation Analysis of Soil Moisture From Metop-A ASCAT and SMOS Against JRA-55 and ERA-Interim.IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,10(5),2274-2284.
MLA Miyaoka, Kengo,et al."Triple Collocation Analysis of Soil Moisture From Metop-A ASCAT and SMOS Against JRA-55 and ERA-Interim".IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 10.5(2017):2274-2284.
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