气候变化领域集成服务门户(CCPortal): The Evaluation of SMAP Enhanced Soil Moisture Products Using High-Resolution Model Simulations and In-Situ Observations on the Tibetan Plateau

CCPortal

DOI	10.3390/rs10040535
	The Evaluation of SMAP Enhanced Soil Moisture Products Using High-Resolution Model Simulations and In-Situ Observations on the Tibetan Plateau
	Li, Chengwei; Lu, Hui; Yang, Kun; Han, Menglei; Wright, Jonathon S.; Chen, Yingying; Yu, Le; Xu, Shiming; Huang, Xiaomeng; Gong, Wei
通讯作者	Lu, H (通讯作者)
发表日期	2018
EISSN	2072-4292
卷号	10 期号:4
英文摘要	The Soil Moisture Active Passive (SMAP) mission was designed to provide a global mapping of soil moisture (SM) measured by L-band passive and active microwave sensors. In this study, we evaluate the newly released SMAP enhanced SM products over the Tibetan Plateau by performing comparisons among SMAP standard products, in-situ observations and Community Land Model (CLM) simulations driven by high-resolution meteorological forcing. At local scales, the enhanced SMAP products, the standard products and CLM simulations all generally compare well with the in-situ observations. The SMAP products show stronger correlations (0.64-0.88) but slightly larger unbiased root mean square errors (ubRMSE, -0.06) relative to the CLM simulations (0.58-0.79 and 0.037-0.047, for correlation and ubRMSE, respectively). At the regional scale, both SMAP products show similar spatial distributions of SM on the TP (Tibetan Plateau), although, as expected, the enhanced product provides more fine details. The SMAP enhanced product is in good agreement with model simulations with respect to temporal and spatial variations in SM over most of the TP. Regions with low correlation between SMAP enhanced products and model simulations are mainly located in the northwestern TP and regions of complex topography, where meteorological stations are sparse and non-existent or elevation is highly variable. In such remote regions, CLM simulations may be problematic due to inaccurate land cover maps and/or uncertainties in meteorological forcing. The independent, high-resolution observations provided by SMAP could help to constrain the model simulation and, ultimately, improve the skill of models in these problematic regions.
关键词	RETRIEVALS VALIDATION SATELLITE NETWORK SMOS ASSIMILATION SENTINEL-1 DATASET AMSR2
英文关键词	Soil Moisture Active Passive; evaluation; in situ observations; CLM simulations
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000435187500047
来源期刊	REMOTE SENSING
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/259243
推荐引用方式 GB/T 7714	Li, Chengwei,Lu, Hui,Yang, Kun,et al. The Evaluation of SMAP Enhanced Soil Moisture Products Using High-Resolution Model Simulations and In-Situ Observations on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2018,10(4).
APA	Li, Chengwei.,Lu, Hui.,Yang, Kun.,Han, Menglei.,Wright, Jonathon S..,...&Gong, Wei.(2018).The Evaluation of SMAP Enhanced Soil Moisture Products Using High-Resolution Model Simulations and In-Situ Observations on the Tibetan Plateau.REMOTE SENSING,10(4).
MLA	Li, Chengwei,et al."The Evaluation of SMAP Enhanced Soil Moisture Products Using High-Resolution Model Simulations and In-Situ Observations on the Tibetan Plateau".REMOTE SENSING 10.4(2018).