Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1109/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
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ISSN | 1939-1404 |
EISSN | 2151-1535 |
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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