Method for Soil Moisture and Surface Temperature Estimation in the Tibetan Plateau Using Spaceborne Radiometer Observations

	Method for Soil Moisture and Surface Temperature Estimation in the Tibetan Plateau Using Spaceborne Radiometer Observations
	Zeng, Jiangyuan 1; Li, Zhen 1; Chen, Quan 1; Bi, Haiyun 1
刊名	IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
	2015
卷号	12 期号:1 页码:2577-2594
关键词	Passive microwave soil moisture surface temperature Tibetan Plateau (TP)
通讯作者	Zeng, JY (reprint author), Chinese Acad Sci, Key Lab Digital Earth Sci, Inst Remote Sensing & Digital Earth, Beijing 100094, Peoples R China.
英文摘要	A method for soil moisture and surface temperature estimation in the Tibetan Plateau (TP) using spaceborne radiometer observations was presented. Based on the physical basis that the 36.5-GHz (Ka-band) vertical brightness temperature is highly sensitive to the topsoil temperature, a new surface temperature model was developed using all ground measurements available from three networks named CAMP/Tibet, Maqu, and Naqu, established in the TP, which can significantly improve the accuracy of surface temperature derived from the land parameter retrieval model (LPRM). Then, the new surface temperature model, which was calibrated with in situ data, was integrated into the soil moisture retrieval algorithm proposed in this letter using Advanced Microwave Scanning Radiometer (AMSR-E) observations. The algorithm combines the vegetation optical depth and roughness into an integrated factor to avoid making unreliable assumptions and using auxiliary data to get these two parameters. Finally, the algorithm was validated by ground measurements from the dense Naqu network and was compared with NASA AMSR-E and Soil Moisture and Ocean Salinity (SMOS) official algorithms. The results show that the proposed algorithm can provide much more accurate soil moisture retrievals than the other two satellite algorithms in the Naqu network region. The algorithm can be applied to the areas with spare vegetation but may not be very suitable for densely vegetated surfaces.
研究领域[WOS]	Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000340952500020
内容类型	期刊论文
源URL	[http://ir.ceode.ac.cn/handle/183411/38344]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	1.[Zeng, Jiangyuan 2.Bi, Haiyun] Chinese Acad Sci, Key Lab Digital Earth Sci, Inst Remote Sensing & Digital Earth, Beijing 100094, Peoples R China 3.[Zeng, Jiangyuan 4.Bi, Haiyun] Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.[Li, Zhen 6.Chen, Quan] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing 100094, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Jiangyuan,Li, Zhen,Chen, Quan,et al. Method for Soil Moisture and Surface Temperature Estimation in the Tibetan Plateau Using Spaceborne Radiometer Observations[J]. IEEE GEOSCIENCE AND REMOTE SENSING LETTERS,2015,12(1):2577-2594.
APA	Zeng, Jiangyuan,Li, Zhen,Chen, Quan,&Bi, Haiyun.(2015).Method for Soil Moisture and Surface Temperature Estimation in the Tibetan Plateau Using Spaceborne Radiometer Observations.IEEE GEOSCIENCE AND REMOTE SENSING LETTERS,12(1),2577-2594.
MLA	Zeng, Jiangyuan,et al."Method for Soil Moisture and Surface Temperature Estimation in the Tibetan Plateau Using Spaceborne Radiometer Observations".IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 12.1(2015):2577-2594.