Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, 730000, China.
Sci Rep. 2017 Jun 30;7(1):4421. doi: 10.1038/s41598-017-04615-7.
In the recent decade, hiatus is the hottest issue in the community of climate change. As the area of great importance, the Tibetan Plateau (TP), however, did not appear to have any warming stoppage in the hiatus period. In fact, the TP showed a continuous warming in the recent decade. To explore why the TP did not show hiatus, we divide the surface air temperature into dynamically-induced temperature (DIT) and radiatively-forced temperature (RFT) by applying the dynamical adjustment method. Our results show that DIT displayed a relatively uniform warming background in the TP, with no obvious correlations with dynamic factors. Meanwhile, as the major contribution to warming, the RFT effect over the TP played the dominant role. The warming role is illustrated using the temperature change between perturbed and control simulation responses to CO or black carbon (BC) forcing via Community Earth System Model (CESM). It shows that an obvious warming in the TP is induced by the CO warming effect, and BC exhibits an amplifying effect on the warming. Therefore, the continuous warming in the TP was a result of uniform DIT warming over a large scale and enhanced RFT warming at a regional scale.
在最近的十年中，极地海冰消退成为气候变化研究领域的热点问题。然而，作为气候系统的重要组成部分，青藏高原在气候变暖的“间歇期”并未出现气温停止上升的现象，反而在近十年持续增温。为了探究青藏高原未出现“间歇”的原因，本研究应用动力调整方法将地面气温分解为动力强迫温度（DIT）和辐射强迫温度（RFT）。结果表明，青藏高原的 DIT 呈现出相对均匀的增温背景，与动力因子之间没有明显的相关性。与此同时，作为增温的主要贡献者，青藏高原上的 RFT 效应起到了主导作用。该效应通过使用对 CO 或黑碳（BC）强迫的集合地球系统模式（CESM）的强迫响应的扰动和控制模拟之间的温度变化来进行说明。结果表明，CO 变暖效应对青藏高原的增温作用明显，BC 对增温有放大作用。因此，青藏高原的持续增温是由大范围均匀的 DIT 增暖和局地增强的 RFT 增温共同作用的结果。
