NDLI: Downscaling of air humidity based on thermal inertia

Content Provider	IEEE Xplore Digital Library
Author	Yuan Rong Hongbo Su Renhua Zhang Yongmin Yang
Copyright Year	2012
Description	Author affiliation: Department of Environmental Engineering, Texas A&M University-Kingsville, 78363, USA (Hongbo Su) \|\| Key Laboratory of Water Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing,100101, China (Yuan Rong; Renhua Zhang; Yongmin Yang)
Abstract	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.
Starting Page	6979
Ending Page	6982
File Size	265719
Page Count	4
File Format	PDF
ISBN	9781467311601
ISSN	21536996
e-ISBN	9781467311595
e-ISBN	9781467311588
DOI	10.1109/IGARSS.2012.6351965
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-22
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Humidity Land surface Soil Interpolation Land surface temperature Heating thermal inertia Air humidity GDAS
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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