A DOWNSCALING SCHEME FOR DERIVING SPATIALLY CONTINUOUS FINE-RESOLUTION SOIL MOISTURE DATA BASED ON GAP-FREE LAND SURFACE TEMPERATURE

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

	A DOWNSCALING SCHEME FOR DERIVING SPATIALLY CONTINUOUS FINE-RESOLUTION SOIL MOISTURE DATA BASED ON GAP-FREE LAND SURFACE TEMPERATURE
	Wen Fengping 1,2; Zhao Wei 1; Wang Wei 3
	2019
会议日期	JUL 28-AUG 02, 2019
会议地点	Yokohama
关键词	Soil moisture downscale ATC SMAP MODIS
页码	7120-7123
国家	JAPAN
英文摘要	Soil moisture (SM) downscaling has become more and more crucial for assisting the application of the coarse-resolution SM product, such as climate change, sustainable development of agroforestry, efficient management of water resources, and monitoring of natural hazards. The main idea of downscaling methods lies on the help of fine-resolution auxiliary data, such as the widely used, land surface temperature (LST) and normalized difference vegetation index (NDVI). However, in the downscaling process, the ancillary data, especially for the daily LST, is strongly affected by cloud cover, resulting high frequency of blank areas in the final downscaled SM products. By contrast, the impact is usually omitted or paid less attention in current downscaling studies. To obtain the spatially continuous fine-resolution SM product, this study firstly introduced an annual temperature cycle (ATC) model to fill the gaps in daily Moderate Resolution Imaging Spectroradiometer (MODIS) LST product induced by cloud cover. Then the 36-km SM product from Soil Moisture Active Passive (SMAP) satellite mission was downscaled from 36-km to 1-km spatial resolution with the synergistic use of the filled LST and MODIS NDVI to estimate spatially continuous fine-resolution SM product.
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:000519270606166
内容类型	会议论文
源URL	[http://ir.imde.ac.cn/handle/131551/35212]
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	Zhao Wei
作者单位	1.Chinese Academy of Sciences, Institute of Mountain Hazards and Environment, Chengdu, 610041, China; 2.University of Chinese Academy of Sciences, Beijing, 100049, China; 3.Chengdu University of Technology, College of Earth Sciences, Chengdu, 610059, China
推荐引用方式 GB/T 7714	Wen Fengping,Zhao Wei,Wang Wei. A DOWNSCALING SCHEME FOR DERIVING SPATIALLY CONTINUOUS FINE-RESOLUTION SOIL MOISTURE DATA BASED ON GAP-FREE LAND SURFACE TEMPERATURE[C]. 见:. Yokohama. JUL 28-AUG 02, 2019.