Seasonal and diurnal variations of land surface temperature in guangxi based on MODIS

Abstract

The seasonal and diurnal variation characters of land surface temperature (LST) and their relationship with normalized difference vegetation index (NDVI) had been researched in Guangxi, with the support of GIS spatial analysis and statistical techniques based on MODIS LST products MOD11A2, MYD11A2, and MOD13Q1 in 2014. Results showed that: (1) spatial distribution of LST varied in different seasons, high LST was mainly scattered and distributed in the middle and south parts of the study area. (2) The diurnal LST variation was higher in nighttime than daytime, the nighttime LST at 22:30 p.m. was the highest, and the daytime LST at 22:30 a.m. was the lowest of all. (3) The LST and NDVI had no significant negative correlation in seasonal scale.