Utilizing a new soil effective temperature scheme and archived satellite microwave brightness temperature data to estimate surface soil moisture in the Nagqu region, Tibetan Plateau of China
文献类型：期刊论文
| 作者 | Tian, Hui1; Iqbal, Mudassar1,2 |
| 刊名 | JOURNAL OF ARID LAND
 |
| 出版日期 | 2018-02-01 |
| 卷号 | 10期号:1页码:84-100 |
| 关键词 | soil effective temperature archived AMSR-E brightness temperature CLM4.5 soil temperature output Cumulative Distribution Function (CDF) matching surface soil moisture Tibetan Plateau |
| ISSN号 | 1674-6767 |
| DOI | 10.1007/s40333-017-0075-6 |
| 通讯作者 | Tian, Hui(htian@lzb.ac.cn) |
| 英文摘要 | Since the early 2000s, many satellite passive microwave brightness temperature (BT) archives, such as the Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E) BTs, have become the useful resources for assessing the changes in the surface and deep soil moistures over both arid and semi-arid regions. In this study, we used a new soil effective temperature (T-eff ) scheme and the archived AMSR-E BTs to estimate surface soil moisture (SM) over the Nagqu region in the central Tibetan Plateau, China. The surface and deep soil temperatures required for the calculation of regional-scale T-eff were obtained from outputs of the Community Land Model version 4.5 (CLM4.5). In situ SM measurements at the CEOP-CAMP/Tibet (Coordinated Enhanced Observing Period Asia-Australia Monsoon Project on the Tibetan Plateau) experimental sites were used to validate the AMSR-E-based SM estimations at regional and single-site scales. Furthermore, the spatial distribution of monthly mean surface SM over the Nagqu region was obtained from 16 daytime AMSR-E BT observations in July 2004 over the Nagqu region. Results revealed that the AMSR-E-based surface SM estimations agreed well with the in situ-based surface SM measurements, with the root mean square error (RMSE) ranging from 0.042 to 0.066 m(3)/m(3) and the coefficient of determination (R-2) ranging from 0.71 to 0.92 during the nighttime and daytime. The regional surface soil water state map showed a clear spatial pattern related to the terrain. It indicated that the lower surface SM values occurred in the mountainous areas of the northern, mid-western and southeastern parts of Nagqu region, while the higher surface SM values appeared in the low elevation areas such as the Tongtian River Basin, Namco Lake and bog meadows in the central part of Nagqu region. Our analysis also showed that the new T-eff scheme does not require special fitting parameters or additional assumptions, which simplifies the data requirements for regional-scale applications. This scheme combined with the archived satellite passive microwave BT observations can be used to estimate the historical surface SM for hydrological process studies over the Tibetan Plateau regions. |
| 收录类别 | SCI |
| WOS关键词 | SOUTHERN GREAT-PLAINS ; L-BAND ; AMSR-E ; BOUNDARY-LAYER ; RETRIEVAL ; PARAMETERIZATION ; ALGORITHM ; RADIOMETRY ; VEGETATION ; FREQUENCY |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000419487100007 |
| 出版者 | SPRINGER HEIDELBERG |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558064 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Tian, Hui |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Hui,Iqbal, Mudassar. Utilizing a new soil effective temperature scheme and archived satellite microwave brightness temperature data to estimate surface soil moisture in the Nagqu region, Tibetan Plateau of China[J]. JOURNAL OF ARID LAND,2018,10(1):84-100. |
| APA | Tian, Hui,&Iqbal, Mudassar.(2018).Utilizing a new soil effective temperature scheme and archived satellite microwave brightness temperature data to estimate surface soil moisture in the Nagqu region, Tibetan Plateau of China.JOURNAL OF ARID LAND,10(1),84-100. |
| MLA | Tian, Hui,et al."Utilizing a new soil effective temperature scheme and archived satellite microwave brightness temperature data to estimate surface soil moisture in the Nagqu region, Tibetan Plateau of China".JOURNAL OF ARID LAND 10.1(2018):84-100. |
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来源：寒区旱区环境与工程研究所
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