| DOI | 10.1016/j.jhydrol.2012.12.033
|
| Spatiotemporal analysis of soil moisture observations within a Tibetan mesoscale area and its implication to regional soil moisture measurements |
| Zhao, Long; Yang, Kun; Qin, Jun; Chen, Yingying; Tang, Wenjun; Montzka, Carsten; Wu, Hui; Lin, Changgui; Han, Menglei; Vereecken, Harry
|
| 通讯作者 | Zhao, L (通讯作者)
|
| 发表日期 | 2013
|
| ISSN | 0022-1694
|
| EISSN | 1879-2707
|
| 起始页码 | 92
|
| 结束页码 | 104
|
| 卷号 | 482 |
| 英文摘要 | A mesoscale Tibetan Plateau Soil Moisture/Temperature Monitoring Network (SMTMN) has been established to study large-scale soil-vegetation-atmosphere interactions and to validate satellite soil moisture products. Soil moisture at four layers (0-5 cm, 10 cm, 20 cm, and 40 cm) of 30 sites was monitored since July, 2010. This paper firstly introduces the network and then presents preliminary spatiotemporal analyses based on the in situ soil moisture measurements in SMTMN. Three temporal scales (half-hourly, daily, and 10-days) and three time periods corresponding to typical soil wetness conditions, including frozen soil in winter times, are discussed. Primary findings are: (a) generally 13 randomly distributed sites in the study domain are required (i.e. number of required sites) to estimate areal mean soil moisture with correlation coefficient >= 0.99 and root mean square difference <= 40.02 m(3) m(-3). This provides guidance for future soil moisture network establishment in similar regions; (b) both number of required sites and the most representative site are insensitive to temporal scales while conversely sensitive to soil wetness conditions; (c) the combination of a few optimally-selected sites can give more robust estimate of areal mean soil moisture than a single site does because the former contains more information on spatial heterogeneity. These findings can provide not only a practical compromise between maintenance cost and risk on reliability for an existing soil moisture network, but also insights for soil moisture upscaling studies and satellite soil moisture products validations. (C) 2013 Elsevier B.V. All rights reserved. |
| 关键词 | WATER CONTENTTEMPORAL STABILITYVARIABILITYTIMESATELLITERETRIEVALDYNAMICSPATTERNSDENSITYENERGY |
| 英文关键词 | Tibetan plateau; Soil moisture network; Number of required sites; Most representative site; Optimal combination of sites |
| 语种 | 英语
|
| WOS研究方向 | Engineering
; Geology
; Water Resources
|
| WOS类目 | Engineering, Civil
; Geosciences, Multidisciplinary
; Water Resources
|
| WOS记录号 | WOS:000316036900008
|
| 来源期刊 | JOURNAL OF HYDROLOGY
(IF:4.405[JCR-2018],4.938[5-Year]) |
| 来源机构 | 中国科学院青藏高原研究所
|
| 文献类型 | 期刊论文
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| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/258187
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推荐引用方式
GB/T 7714 |
Zhao, Long,Yang, Kun,Qin, Jun,et al. Spatiotemporal analysis of soil moisture observations within a Tibetan mesoscale area and its implication to regional soil moisture measurements[J]. 中国科学院青藏高原研究所,2013,482.
|
| APA |
Zhao, Long.,Yang, Kun.,Qin, Jun.,Chen, Yingying.,Tang, Wenjun.,...&Vereecken, Harry.(2013).Spatiotemporal analysis of soil moisture observations within a Tibetan mesoscale area and its implication to regional soil moisture measurements.JOURNAL OF HYDROLOGY,482.
|
| MLA |
Zhao, Long,et al."Spatiotemporal analysis of soil moisture observations within a Tibetan mesoscale area and its implication to regional soil moisture measurements".JOURNAL OF HYDROLOGY 482(2013).
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