气候变化领域集成服务门户(CCPortal): Long term soil moisture mapping over the Tibetan plateau using Special Sensor Microwave/Imager

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DOI	10.5194/hess-18-1323-2014
	Long term soil moisture mapping over the Tibetan plateau using Special Sensor Microwave/Imager
	van der Velde, R.; Salama, M. S.; Pellarin, T.; Ofwono, M.; Ma, Y.; Su, Z.
通讯作者	van der Velde, R (通讯作者)
发表日期	2014
ISSN	1027-5606
EISSN	1607-7938
起始页码	1323
结束页码	1337
卷号	18 期号:4
英文摘要	This paper discusses soil moisture retrievals over the Tibetan Plateau from brightness temperature (T-B's) observed by the Special Sensor Microwave Imagers (SSM/I's) during the warm seasons of the period from July 1987 to December 2008. The Fundamental Climate Data Record (FCDR) of F08, F11 and F13 SSM/I satellites by the Precipitation Research Group of Colorado State University is used for this study. A soil moisture retrieval algorithm is developed based on a radiative transfer model that simulates top-of-atmosphere T-B's whereby effects of atmosphere are calculated from near-surface forcings obtained from a bias-corrected dataset. Validation of SSM/I retrievals against in situ measurements for a two-and-half year period (225 matchups) gives a Root Mean Squared Error of 0.046m(3) m(-3). The agreement between retrievals and Noah simulations from the Global Land Data Assimilation System is investigated to further provide confidence in the reliability of SSM/I retrievals at the Plateau-scale. Normalised soil moisture anomalies (N) are computed on a warm seasonal (May-October) and on a monthly basis to analyse the trends present within the products available from July 1987 to December 2008. The slope of linear regression functions between N and time is used to quantify the trends. Both the warm season and monthly N indicate severe wettings of 0.8 to almost 1.6 decade(-1) in the centre of the Plateau. Correlations are found by the trend with elevation for the warm season as a whole and the individual months May, September and October. The observed wetting of the Tibetan Plateau agrees with recent findings on permafrost retreat, precipitation increase and potential evapotranspiration decline.
关键词	REMOTE-SENSING DATA LAND-SURFACE TEMPERATURE BRIGHTNESS TEMPERATURES SATELLITE-OBSERVATIONS GLOBAL SIMULATION WATER-CONTENT RETRIEVAL SSM/I VALIDATION DYNAMICS
语种	英语
WOS研究方向	Geology ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000335375300006
来源期刊	HYDROLOGY AND EARTH SYSTEM SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258388
推荐引用方式 GB/T 7714	van der Velde, R.,Salama, M. S.,Pellarin, T.,et al. Long term soil moisture mapping over the Tibetan plateau using Special Sensor Microwave/Imager[J]. 中国科学院青藏高原研究所,2014,18(4).
APA	van der Velde, R.,Salama, M. S.,Pellarin, T.,Ofwono, M.,Ma, Y.,&Su, Z..(2014).Long term soil moisture mapping over the Tibetan plateau using Special Sensor Microwave/Imager.HYDROLOGY AND EARTH SYSTEM SCIENCES,18(4).
MLA	van der Velde, R.,et al."Long term soil moisture mapping over the Tibetan plateau using Special Sensor Microwave/Imager".HYDROLOGY AND EARTH SYSTEM SCIENCES 18.4(2014).