Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL083398 |
A Global Assessment of Added Value in the SMAP Level 4 Soil Moisture Product Relative to Its Baseline Land Surface Model | |
Dong, Jianzhi1; Crow, Wade1; Reichle, Rolf2; Liu, Qing2,3; Lei, Fangni1; Cosh, Michael H.1 | |
2019-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:12页码:6604-6613 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The Soil Moisture Active Passive (SMAP) level 4 product provides enhanced soil moisture estimates by assimilating SMAP brightness temperature observations into a land surface model. Here, a quantitative estimate of the relative skill of SMAP Level-4 and model-only surface soil moisture (vs. true soil moisture) is derived using only one additional noisy (but independent) soil moisture product. The method is applied globally and verified using high-quality, ground-based measurements where available. Results demonstrate that assimilating SMAP brightness temperature has relatively little impact in data-rich areas like the United States and Europe. In contrast, much larger improvement is observed in data-sparse regions, including much of Africa and central Australia, where model-only simulations are disproportionately impacted by low-quality model forcing. Therefore, ground validation conducted in data-rich areas does not adequately sample the added value of SMAP data assimilation for data-sparse regions and substantially underestimates the added skill provided by the SMAP level 4 system. |
英文关键词 | soil moisture SMAP SMAP L4 error evaluation data assimilation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477616300050 |
WOS关键词 | TURBULENT HEAT FLUXES ; L-BAND ; ASSIMILATION ; TEMPERATURE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/184249 |
专题 | 气候变化 |
作者单位 | 1.USDA, Hydrol & Remote Sensing Lab, Beltsville, MD 20705 USA; 2.NASA, Goddard Space Flight Ctr, Global Modeling & Assimilat Off, Greenbelt, MD USA; 3.Sci Applicat Int Corp, Beltsville, MD USA |
推荐引用方式 GB/T 7714 | Dong, Jianzhi,Crow, Wade,Reichle, Rolf,et al. A Global Assessment of Added Value in the SMAP Level 4 Soil Moisture Product Relative to Its Baseline Land Surface Model[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(12):6604-6613. |
APA | Dong, Jianzhi,Crow, Wade,Reichle, Rolf,Liu, Qing,Lei, Fangni,&Cosh, Michael H..(2019).A Global Assessment of Added Value in the SMAP Level 4 Soil Moisture Product Relative to Its Baseline Land Surface Model.GEOPHYSICAL RESEARCH LETTERS,46(12),6604-6613. |
MLA | Dong, Jianzhi,et al."A Global Assessment of Added Value in the SMAP Level 4 Soil Moisture Product Relative to Its Baseline Land Surface Model".GEOPHYSICAL RESEARCH LETTERS 46.12(2019):6604-6613. |
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