Temporal and Spatial Variations of Land Surface Temperature over the Qinghai-Xizang Plateau Based on MODIS Data
Based on China's land surface temperature data sets(MOD11C1 and MYD11C1)from 2003 to 2017,the temporal and spatial distribution characteristics of land surface temperature over the Qinghai-Xizang Plateau were systematically analyzed by means of climate tendency rate method,trend analysis method,cumula-tive anomaly method and M-K trend test method.The results show that the average land surface temperature o-ver the Qinghai-Xizang Plateau during 2003 and 2017 was 0.88 ℃,decreasing from southeast to northwest.The annual average land surface temperature over the Qinghai-Xizang Plateau showed a fluctuating and rising trend,with an average increase of 0.412 ℃ every 10 years.From the perspective of four seasons distribution,the average land surface temperature of the four seasons in the whole study area was in the order of summer,spring,autumn,and winter from high to low,with values of 9.57,1.53,1.51 and-9.13 ℃,respectively.It shows that the temperature drops in spring and rises in summer,autumn and winter,and the surface temperature rises the fastest in autumn,reaching 0.70 ℃/10a.
NETL
NSTL
万方数据
