Time‐dependent warming amplification over the Tibetan Plateau during the past few decades,Atmospheric Science Letters

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Time‐dependent warming amplification over the Tibetan Plateau during the past few decades
Atmospheric Science Letters ( IF 2.0 ) Pub Date : 2020-06-08 , DOI: 10.1002/asl.998
Jianping Duan ₁ , Lun Li ₂ , Liang Chen ₁ , Haoxin Zhang ₁

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It is reported that surface warming over the Tibetan Plateau (TP) has been faster than the global average, but exactly how much faster remains controversial. This study investigates the time dependency of warming amplification over the TP using CRU_TS4.01 grid dataset during 1961–2016 with a consideration of its consistency with the global average. We find that the magnitude of warming on the TP and its consistency with the global average have been variable. Compared to the global average, the TP warming during 1983–2016 is faster than in the period of 1961–1983, and has a higher consistency with the global average in the period of 1983–2016. The TP warming has a seasonal amplification of 1.1–1.4 times than the global average during 1983–2016, while warming amplification during 1961–1983 is relatively less evident. Generally, the magnitude of warming on the TP is smaller than in the northern high‐latitudes, but larger than in the Southern Hemisphere and the Tropics. Based on current scientific understanding, the possible contribution of snow/ice‐albedo feedback may have played an important role in warming amplification on the TP since the 1980s.

中文翻译：

在过去几十年中，青藏高原随时间的变暖加剧

据报道，青藏高原（TP）的地表变暖已经快于全球平均水平，但究竟有多快仍存在争议。这项研究调查了1961-2016年间使用CRU_TS4.01网格数据集对TP进行升温的时间依赖性，并考虑了其与全球平均值的一致性。我们发现TP的变暖幅度及其与全球平均水平的一致性是可变的。与全球平均水平相比，1983–2016年的TP变暖要快于1961–1983年，并且与1983–2016年的全球平均水平具有较高的一致性。TP变暖的季节增幅是1983-2016年全球平均水平的1.1-1.4倍，而1961-1983年的增温幅度相对较小。通常，TP的变暖幅度小于北部高纬度地区，但大于南半球和热带地区。根据目前的科学认识，自1980年代以来，雪/冰-反照率反馈的可能贡献可能在TP的变暖中起了重要作用。

更新日期：2020-06-08

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