DOWNSCALING SMAP PASSIVE SOIL MOISTURE PRODUCT WITH MODIS PRODUCTS OVER MOUNTAINOUS REGION

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所

	DOWNSCALING SMAP PASSIVE SOIL MOISTURE PRODUCT WITH MODIS PRODUCTS OVER MOUNTAINOUS REGION
	Zhao Wei 1,2; Wen Fengping 1,2; Song Lisheng 3; Li Xinjuan 1,2; Li Ainong 1
	2019
会议日期	JUL 28-AUG 02, 2019
会议地点	Yokohama
关键词	Downscaling Soil moisture SMAP MODIS Random forest regression
页码	7006-7009
国家	JAPAN
英文摘要	To solve the limitation of coarse spatial resolution of passive microwave surface soil moisture (SSM) product, many spatial downscaling methods has been proposed under the theoretic basis of the land surface temperature (LST)/vegetation index triangle space. However, in most studies, the topographic influences on the downscaling results is rarely analyzed but the impacts should be significant due to the strong effect of topographic changes on LST. To effectively solve this issue, a downscaling approach was developed in this study to disaggregate the Soil Moisture Active and Passive (SMAP) SSM product with the use of the Optical/Thermal infrared (TIR) observations from the Moderate-Resolution Imaging Spectro-radiometer (MODIS) onboard the Terra satellite for a typical mountain region located in the west of U.S. Two steps are included in the approach: (1) normalizing the terrain effect on LST and (2) downscaling passive SSM product based on a machine learning approach. The SNOTEL soil moisture observation network located in the study area was used to validate the downscaled SSM.
产权排序	1
会议录	2019 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2019)
会议录出版者	IEEE
会议录出版地	NEW YORK
语种	英语
ISSN号	2153-6996
ISBN号	978-1-5386-9154-0
WOS记录号	WOS:000519270606143
内容类型	会议论文
源URL	[http://ir.imde.ac.cn/handle/131551/35211]
专题	中国科学院水利部成都山地灾害与环境研究所
通讯作者	Li Ainong
作者单位	1.Chinese Academy of Sciences, Institute of Mountain Hazards and Environment, Chengdu, China; 2.University of Chinese Academy of Sciences, Beijing, China; 3.Southwest University, School of Geographical Sciences, Chongqing, China
推荐引用方式 GB/T 7714	Zhao Wei,Wen Fengping,Song Lisheng,et al. DOWNSCALING SMAP PASSIVE SOIL MOISTURE PRODUCT WITH MODIS PRODUCTS OVER MOUNTAINOUS REGION[C]. 见:. Yokohama. JUL 28-AUG 02, 2019.