Modulation of the relationship between summer temperatures in the Qinghai-Tibetan Plateau and Arctic over the past millennium by external forcings
Modulation of the relationship between summer temperatures in the Qinghai-Tibetan Plateau and Arctic over the past millennium by external forcings
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近千年来青藏高原与北极夏季气温受外强迫作用的调节关系
DOI：
10.1017/qua.2021.3
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发表时间：
2021
影响因子：
2.3
通讯作者：
Guo Zhengtang
中科院分区：
文献类型：
--
作者：
Shi Feng;Duan Anmin;Yin Qiuzhen;Bruun John T.;Xiao Cunde;Guo Zhengtang
青藏高原和北极对全球气候都有重要影响，但这两个地区气候变化之间的相关性尚不清楚。在这里，我们重建并比较了青藏高原和北极过去1,120年（900-2019 CE）的夏季温度异常。这两个地区近千年来的气温相关具有明显的百年变化，这是由火山爆发引起的。此外，在16世纪，温度相关性从弱到强的突然转变可以与现代暖期的这种类型的转变相类似。前者是由火山爆发所迫，而后者则是由温室气体的变化所控制。这意味着在现代暖期，与自然强迫相反，人为强迫放大了青藏高原和北极之间的遥相关。
The Qinghai–Tibetan Plateau and Arctic both have an important influence on global climate, but the correlation between climate variations in these two regions remains unclear. Here we reconstructed and compared the summer temperature anomalies over the past 1,120 yr (900–2019 CE) in the Qinghai–Tibetan Plateau and Arctic. The temperature correlation during the past millennium in these two regions has a distinct centennial variation caused by volcanic eruptions. Furthermore, the abrupt weak-to-strong transition in the temperature correlation during the sixteenth century could be analogous to this type of transition during the Modern Warm Period. The former was forced by volcanic eruptions, while the latter was controlled by changes in greenhouse gases. This implies that anthropogenic, as opposed to natural, forcing has acted to amplify the teleconnection between the Qinghai–Tibetan Plateau and Arctic during the Modern Warm Period.