Downscaling of air humidity based on thermal inertia

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	Downscaling of air humidity based on thermal inertia
	Rong,Yuan(荣媛) ; Su,Hongbo ; Zhang,Renhua ; Yang,Yongmin
	2012
会议名称	2012 32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012
会议日期	July 22, 2012 - July 27, 2012
会议地点	Munich, Germany
关键词	Atmospheric temperature Digital storage Geology Geostationary satellites Remote sensing Water supply
通讯作者	Rong, Yuan(荣媛)
英文摘要	Air humidity is an important input variable to estimate terrestrial evapotranspiration based on satellite remote sensing. The air humidity obtained by the observations from surface meteorological stations is limited in their spatial and temporal representation. The validated GDAS (Global Data Assimilation System) dataset can provide the simulated data every 3 hours [1]; and the FY-2C (the first operational geostationary meteorological satellite FengYun-2C from China) can provide the data of land surface temperature hourly. Moreover, they are of great value in downscaling the air humidity. Air humidity (2m height above the ground level) both from thermometer screen to high ground is driven by the advection, the turbulence and the radiation processes [2]. As Zent et al. [3] put it in 1993, thermal inertia can be used to study the changes of air humidity. North China was chosen as the study area. Using the GDAS forcing dataset, the MODIS, FY-2C and ground observations, a new method is proposed to downscale the near surface air humidity based on thermal inertia. Finally, in order to evaluate the performance of our method, Inverse Distance Weighted (IDW) interpolation, SPLINE interpolation, together with the ground measurements were used to compare with our method.
收录类别	EI
会议录	International Geoscience and Remote Sensing Symposium (IGARSS)
会议录出版者	Institute of Electrical and Electronics Engineers Inc
会议录出版地	445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States
语种	英语
内容类型	会议论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/27842]
专题	地理科学与资源研究所_研究生部
推荐引用方式 GB/T 7714	Rong,Yuan,Su,Hongbo,Zhang,Renhua,et al. Downscaling of air humidity based on thermal inertia[C]. 见:2012 32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012. Munich, Germany. July 22, 2012 - July 27, 2012.