Abstract

As one of the key elements of climate change, the temperature changes can affects the energy balance and hydrological cycle. The variations and trend of mean annual maximum temperature (Tmax) and minimum temperature (Tmin) were analyzed by using linear regress for 44 stations inside and surrounding the Qilian Mountains for period of 1960-2017. The results have shown that the variations of mean annual Tmax and Tmin have significant increasing in whole study regions. The warming trend of mean annual Tmix is higher than that of Tmax. Both the trend of mean annual Tmax and Tmin in the southern slope is warmer than those in the northern slope of Qilian Mountains. In spring, the warming trend of Tmax is significantly weaker inside than that outside the Qilian Mountains. For all seasons, the trend of Tmax and Tmin is the highest in winter, and is weakest in spring.

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