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

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外文摘要：The term"Holocene temperature conundrum"refers to the inconsistencies between proxy-based recon-structions 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 ice-sheet retreat and rising greenhouse gas concentrations.Various factors,such as seasonal biases and over-looked 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 per-forming simulations with and without coupled dynamic vegetation,our objective was to isolate the influ-ence 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.

外文关键词：

Holocene temperature conundrumHolocene Thermal MaximumVegetation-climate feedbackEast AsiaPaleoclimate simulations

作者：

Jie Chen、Qiong Zhang、Zhengyao Lu、Yanwu Duan、Xianyong Cao、Jianping Huang、Fahu Chen

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作者单位：

Key Laboratory of Western China s Environmental Systems(Ministry of Education),College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China

Department of Physical Geography and Bolin Centre for Climate Research,Stockholm University,Stockholm 10691,Sweden

Department of Physical Geography and Ecosystem Science,Lund University,Lund 22100,Sweden

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

Collaborative Innovation Center for Western Ecological Safety,Lanzhou University,Lanzhou 730000,China

Key Laboratory of Western China's Environmental Systems(Ministry of Education),College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China

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基金：

National Natural Science Foundation of ChinaChina Postdoctoral Science FoundationSwedish Research Council(Vetenskapsr?det)Swedish Research Council(Vetenskapsr?det)Swedish Research Council

项目编号：

421011492022M7114412017-042322022-036172018-05913

出版年：

2024

DOI：

10.1016/j.scib.2024.04.012

科学通报(英文版)

中国科学院

科学通报(英文版)

CSTPCD

ISSN：1001-6538

年,卷(期)：2024.69(15)