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通过对2013年春季在青藏高原昆仑山求勉雷克塔格冰川上取得的冰川表面温度资料的分析,研究了该冰川表面温度空间变化特征及其影响因素.结果表明:该冰川表面(粒雪)温度在晴天时较多云或阴雪天时偏低,这可能与晴天时冰川表面吸收的部分热量用于粒雪消融而不是粒雪层升温有关;晴天时该冰川表面温度随海拔的升高而降低,其递减率值为0.58℃·(100m)-1,较自由大气的气温递减率值略偏低;晴天时,冰川表层粒雪层厚度对其表面温度具有重要的影响,二者之间呈显著的正相关关系,并且粒雪层厚度每增加10cm,其冰川表面温度会升高约0.46℃.结合青藏高原其他冰川表面温度的观测结果,揭示出当冰川表面存在消融时其表面温度日变化幅度较小,一般只有几度.
Based on the analysis of glacier surface temperature data obtained from the Qikangrektag Glacier in the Kunlun Mountains in the spring of 2013, the spatial variation characteristics of the glacier surface temperature and its influencing factors were studied. The results show that the surface of the glacier ) When the temperature is cloudy in sunny days or low in cloudy and snowy days, it may be related to the part of the heat absorbed by the surface of glaciers on sunny days for the snow melting instead of the warming of the grain snow layers. On sunny days, the surface temperature of the glaciers increases with altitude , The decreasing rate is 0.58 ℃ · (100m) -1, which is slightly lower than that of free atmosphere. On sunny days, the thickness of glacial layer snow layer has an important influence on the surface temperature. And the temperature of the glacier increased by about 0.46 ℃ for every 10cm of the thickness of the snow layer.By observing the surface temperature of other glaciers in the Qinghai-Xizang Plateau, it was revealed that when the glacier surface ablation, the surface temperature Change is small, generally only a few degrees.