NDLI: Air temperature estimation with MODIS data over the Northern Tibetan Plateau

Content Provider	Springer Nature Link
Author	Huang, Fangfang Ma, Weiqiang Wang, Binbin Hu, Zeyong Ma, Yaoming Sun, Genhou Xie, Zhipeng Lin, Yun
Copyright Year	2017
Abstract	Time series of MODIS land surface temperature (T s) and normalized difference vegetation index (NDVI) products, combined with digital elevation model (DEM) and meteorological data from 2001 to 2012, were used to map the spatial distribution of monthly mean air temperature over the Northern Tibetan Plateau (NTP). A time series analysis and a regression analysis of monthly mean land surface temperature (T s) and air temperature (T a) were conducted using ordinary linear regression (OLR) and geographical weighted regression (GWR). The analyses showed that GWR, which considers MODIS T s, NDVI and elevation as independent variables, yielded much better results [R2 Adj > 0.79; root-mean-square error (RMSE) = 0.51°C–1.12°C] associated with estimating T a compared to those from OLR (R 2 Adj = 0.40−0.78; RMSE = 1.60°C–4.38°C). In addition, some characteristics of the spatial distribution of monthly T a and the difference between the surface and air temperature (T d) are as follows. According to the analysis of the 0°C and 10°C isothermals, T a values over the NTP at elevations of 4000–5000 m were greater than 10°C in the summer (from May to October), and T a values at an elevation of 3200 m dropped below 0°C in the winter (from November to April). T a exhibited an increasing trend from northwest to southeast. Except in the southeastern area of the NTP, T d values in other areas were all larger than 0°C in the winter.
Starting Page	650
Ending Page	662
Page Count	13
File Format	PDF
ISSN	02561530
Journal	Advances in Atmospheric Sciences
Volume Number	34
Issue Number	5
e-ISSN	18619533
Language	English
Publisher	Science Press
Publisher Date	2017-04-07
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	air temperature estimation MODIS land surface temperature geographical weighted regression Northern Tibetan Plateau Atmospheric Sciences Meteorology Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

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