A method to estimate maximum and minimum air temperature using MODIS surface temperature and vegetation data: application to the Maipo Basin, Chile

被引：25

作者：

Bustos, Eduardo ^{[1
]}

Meza, Francisco J. ^{[1
,2
]}

机构：

[1] Pontificia Univ Catolica Chile, Ctr Interdisciplinario Cambio Global, Santiago, Chile

[2] Pontificia Univ Catolica Chile, Fac Agron & Ingn Forestal, Dept Ecosistemas & Medioambiente, Santiago, Chile

来源：

THEORETICAL AND APPLIED CLIMATOLOGY | 2015年 / 120卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

SOIL-WATER CONTENT; MSG-SEVIRI DATA; STOMATAL CONDUCTANCE; CANOPY TEMPERATURE; TRIANGLE METHOD; AVHRR DATA; INDEX; NDVI; EVAPOTRANSPIRATION; RESOLUTION;

D O I：

10.1007/s00704-014-1167-2

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

We present a method to estimate minimum and maximum air temperatures that uses land surface information from the Moderate Resolution Imaging Spectroradiometer (MODIS). The method is based on an analysis of the distribution of the Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST) obtained from the MODIS sensor. We select the pixels with high values of NDVI for each set of NDVI-LST images to represent vegetation pixels with adequate water conditions, ensuring that temperature values between surface and air surrounding are similar. Then, these pixels are spatially interpolated in order to obtain whole region maps of maximum and minimum air temperature. Estimates were compared with observed values for 12 meteorological stations distributed in the study area. After correcting for bias and lags between satellite and surface observation times, the majority of the stations show air temperature estimates that have no significant differences compared to the observed air temperature values. Except for urban areas, results show a correct representation of spatial and temporal distribution of maximum and minimum temperatures for all surface types.

引用

页码：211 / 226

页数：16

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