Reconciling East Asia’s mid-Holocene temperature discrepancy through vegetation-climate feedback  

植被反馈作用调控了中全新世东亚温度南北反向变化

作　　者：Jie Chen Qiong Zhang Zhengyao Lu Yanwu Duan Xianyong Cao Jianping Huang Fahu Chen 陈婕;Qiong Zhang;陆正遥;段炎武;曹现勇;黄建平;陈发虎

机构地区：[1]Key Laboratory of Western China’s Environmental Systems(Ministry of Education),College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China [2]Department of Physical Geography and Bolin Centre for Climate Research,Stockholm University,Stockholm 10691,Sweden [3]Department of Physical Geography and Ecosystem Science,Lund University,Lund 22100,Sweden [4]Group of Alpine Paleoecology and Human Adaptation(ALPHA),State Key Laboratory of Tibetan Plateau Earth System,Environment and Resources(TPESER),Institute of Tibetan Plateau Research(ITPCAS),Chinese Academy of Sciences(CAS),Beijing 100101,China [5]Collaborative Innovation Center for Western Ecological Safety,Lanzhou University,Lanzhou 730000,China

出　　处：《Science Bulletin》2024年第15期2420-2429,共10页科学通报（英文版）

基　　金：supported by the National Natural Science Foundation of China(42101149);the China Postdoctoral Science Foundation(2022M711441);the Swedish Research Council(Vetenskapsr?det)(2017-04232,2022-03617)。

摘　　要：The term“Holocene temperature conundrum”refers to the inconsistencies between proxy-based reconstructions and transient model simulations,and it challenges our understanding of global temperature evolution during the Holocene.Climate reconstructions indicate a cooling trend following the Holocene Thermal Maximum,while model simulations indicate a consistent warming trend due to icesheet retreat and rising greenhouse gas concentrations.Various factors,such as seasonal biases and overlooked feedback processes,have been proposed as potential causes for this discrepancy.In this study,we examined the impact of vegetation-climate feedback on the temperature anomaly patterns in East Asia during the mid-Holocene(~6 ka).By utilizing the fully coupled Earth system model EC-Earth and performing simulations with and without coupled dynamic vegetation,our objective was to isolate the influence of vegetation changes on regional temperature patterns.Our findings reveal that vegetation-climate feedback contributed to warming across most of East Asia,resulting in spatially diverse temperature changes during the mid-Holocene and significantly improved model-data agreement.These results high-light the crucial role of vegetation-climate feedback in addressing the Holocene temperature conundrum and emphasize its importance for simulating accurate climate scenarios.

关 键 词：Holocene temperature conundrum Holocene Thermal Maximum Vegetation-climate feedback East Asia Paleoclimate simulations 

分 类 号：P423[天文地球—大气科学及气象学] P534.632