a negative trendp<0.001
Relative humidity had a negative trend of −3.4×10 −3 (p<0.001) based on MERRA dataset and −6.67×10 −4 (p<0.1) based on meteorology observations ( Figure 2C ).
Relative humidity had a negative trend of −3.4×10 −3 (p<0.001) based on MERRA dataset and −6.67×10 −4 (p<0.1) based on meteorology observations ( Figure 2C ).
Solar radiation of MERRA showed a positive trend of 3.36 MJ m −2 yr −1 (p<0.01), which is consistent with that of observed sunshine hours ( Figure 2B ).
[30] who reported a decreasing trend of ET in drylands such as the DEA.
The spatial changes of multi-year mean ET, GPCP precipitation and water balance (GPCP precipitation minus ET) from 1982 through 2009 showed an increasing trend from the center to the edge of the DEA as the land cover types changing from the Gobi desert to the grassland ( Figure 5 ).