Biophysical impacts of earth greening can substantially mitigate regional land surface temperature warming

文献类型： 外文期刊

第一作者： Li, Yitao

作者： Li, Yitao;Wu, Hua;Tang, Ronglin;Li, Yitao;Wu, Hua;Li, Zhao-Liang;Liu, Xiangyang;Leng, Pei;Yang, Peng;Wu, Wenbin;Zhou, Chenghu;Shang, Guo-Fei;Ma, Lingling

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：16.6； 五年影响因子：17.0 ）

ISSN：

年卷期： 2023 年 14 卷 1 期

页码：

收录情况： SCI

摘要： Vegetation change can alter surface energy balance and subsequently affect the local climate. This biophysical impact has been well studied for forestation cases, but the sign and magnitude for persistent earth greening remain controversial. Based on long-term remote sensing observations, we quantify the unidirectional impact of vegetation greening on radiometric surface temperature over 2001-2018. Here, we show a global negative temperature response with large spatial and seasonal variability. Snow cover, vegetation greenness, and shortwave radiation are the major driving factors of the temperature sensitivity by regulating the relative dominance of radiative and non radiative processes. Combined with the observed greening trend, we find a global cooling of -0.018 K/decade, which slows down 4.6 +/- 3.2% of the global warming. Regionally, this cooling effect can offset 39.4 +/- 13.9% and 19.0 +/- 8.2% of the corresponding warming in India and China. These results highlight the necessity of considering this vegetation-related biophysical climate effect when informing local climate adaptation strategies.

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