年、季日照时数减少与低云量增加关系密切，而冬季日照时数的减少还与水汽压的增加有关。
Annual and seasonal sunshine hours decreased with the increasing of low level cloud amount, and the reduction of sunshine hours increased along with vapor pressure in winter.
低云量对气温响应较好的区域秋、冬季是柴达木盆地，春季是祁连山区，夏季是河西走廊地区。
The better districts of response of low clod cover to warming were Chaidamu basin in winter and in autumn and Qilian Mountain in spring and Hexi corridor in summer.
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