干旱区生态环境知识资源中心(Arid): An evaluation of the spatial resolution of soil moisture information

Arid

报告编号	NASA-CR-166724, ERT-P-7505-F
来源ID	NTRS_Document_ID: 19820003640
	An evaluation of the spatial resolution of soil moisture information
	Hardy, K. R.; Cohen, S. H.; Rogers, L. K.; Burke, H. H. K.; Leupold, R. C.; Smallwood, M. D.
英文摘要	Rainfall-amount patterns in the central regions of the U.S. were assessed. The spatial scales of surface features and their corresponding microwave responses in the mid western U.S. were investigated. The usefulness for U.S. government agencies of soil moisture information at scales of 10 km and 1 km. was ascertained. From an investigation of 494 storms, it was found that the rainfall resulting from the passage of most types of storms produces patterns which can be resolved on a 10 km scale. The land features causing the greatest problem in the sensing of soil moisture over large agricultural areas with a radiometer are bodies of water. Over the mid-western portions of the U.S., water occupies less than 2% of the total area, the consequently, the water bodies will not have a significant impact on the mapping of soil moisture. Over most of the areas, measurements at a 10-km resolution would adequately define the distribution of soil moisture. Crop yield models and hydrological models would give improved results if soil moisture information at scales of 10 km was available.
英文关键词	LAND USE RADIATIVE TRANSFER RAIN SOIL MOISTURE SPATIAL RESOLUTION STORMS HYDROLOGY MODELS MICROWAVE RADIOMETERS STATISTICAL ANALYSIS SYNOPTIC METEOROLOGY WATERSHEDS
出版年	1981
报告类型	Technical Report
语种	英语
国家	美国
URL	http://hdl.handle.net/2060/19820003640
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/258867
推荐引用方式 GB/T 7714	Hardy, K. R.,Cohen, S. H.,Rogers, L. K.,et al. An evaluation of the spatial resolution of soil moisture information,1981.