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Changes in snow depth under elevation-dependent warming over the Tibetan Plateau
Atmospheric Science Letters ( IF 2.0 ) Pub Date : 2021-05-03 , DOI: 10.1002/asl.1041 Liucheng Shen 1 , Yuqing Zhang 2, 3 , Safi Ullah 2 , Nick Pepin 4 , Qianrong Ma 5
Atmospheric Science Letters ( IF 2.0 ) Pub Date : 2021-05-03 , DOI: 10.1002/asl.1041 Liucheng Shen 1 , Yuqing Zhang 2, 3 , Safi Ullah 2 , Nick Pepin 4 , Qianrong Ma 5
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Snow plays an essential role in regulating climate change, the hydrological cycle, and various biological processes. Passive microwave snow depth data and gridded data from the Climate Research Unit (CRU_TS4.04) are utilized in this study to investigate spatiotemporal variations of snow depth over the Tibetan Plateau (TP), with special focus on the vertical dimension. The response of snow to elevation-dependent warming (EDW) is determined accordingly. High mountains experience more rapid warming than lower elevations. During 1980–2014, the total snow depth over the TP decreased; areas with the most significant decreasing trends are mainly concentrated in the northwestern and southwestern parts of the TP. The plateau-wide decrease in snow depth (−0.24 cm/decade) is mainly affected by increasing temperature (0.30°C/decade). The reduction in snow depth trend intensifies as sub-regional mean elevation increases from 3,332 m (IID2) to 5,074 m (ID1). A stronger snow depth decrease in high-elevation sub-regions generally corresponds to higher warming rates, which demonstrates EDW. The most pronounced correlation between snow depth decrease rate and elevation occurs in the southeastern TP, which covers the largest elevation range on the plateau (from 2,000 to 6,000 m).
中文翻译：
青藏高原高程增温下雪深变化
雪在调节气候变化、水文循环和各种生物过程中起着至关重要的作用。本研究利用气候研究组（CRU_TS4.04）的被动微波雪深数据和网格数据，研究青藏高原（TP）雪深的时空变化，特别关注垂直维度。雪对依赖海拔的变暖 (EDW) 的响应是相应地确定的。高山比低海拔经历更快的变暖。1980-2014年，青藏高原总积雪深度减少；下降趋势最显着的地区主要集中在青藏高原的西北部和西南部。高原范围内雪深的减少（-0.24 厘米/十年）主要受温度升高（0.30°C/十年）的影响。随着次区域平均海拔从 3,332 m (IID2) 增加到 5,074 m (ID1)，雪深减少趋势加剧。高海拔子区域的雪深减少越强，通常对应于更高的变暖率，这表明 EDW。雪深减少率与海拔高度之间的相关性最显着发生在高原东南部，该地区覆盖了高原上最大的海拔范围（从 2,000 到 6,000 m）。
更新日期：2021-05-03
中文翻译：
青藏高原高程增温下雪深变化
雪在调节气候变化、水文循环和各种生物过程中起着至关重要的作用。本研究利用气候研究组（CRU_TS4.04）的被动微波雪深数据和网格数据，研究青藏高原（TP）雪深的时空变化，特别关注垂直维度。雪对依赖海拔的变暖 (EDW) 的响应是相应地确定的。高山比低海拔经历更快的变暖。1980-2014年，青藏高原总积雪深度减少；下降趋势最显着的地区主要集中在青藏高原的西北部和西南部。高原范围内雪深的减少（-0.24 厘米/十年）主要受温度升高（0.30°C/十年）的影响。随着次区域平均海拔从 3,332 m (IID2) 增加到 5,074 m (ID1)，雪深减少趋势加剧。高海拔子区域的雪深减少越强，通常对应于更高的变暖率，这表明 EDW。雪深减少率与海拔高度之间的相关性最显着发生在高原东南部，该地区覆盖了高原上最大的海拔范围（从 2,000 到 6,000 m）。
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