气候变化领域集成服务门户(CCPortal): Mid-Holocene climate change over China: Model-data discrepancy

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DOI	10.5194/cp-15-1223-2019
	Mid-Holocene climate change over China: Model-data discrepancy
	Lin Y.; Ramstein G.; Wu H.; Rani R.; Braconnot P.; Kageyama M.; Li Q.; Luo Y.; Zhang R.; Guo Z.
发表日期	2019
ISSN	18149324
起始页码	1223
结束页码	1249
卷号	15 期号:4
英文摘要	The mid-Holocene period (MH) has long been an ideal target for the validation of general circulation model (GCM) results against reconstructions gathered in global datasets. These studies aim to test GCM sensitivity, mainly to seasonal changes induced by the orbital parameters (longitude of the perihelion). Despite widespread agreement between model results and data on the MH climate, some important differences still exist. There is no consensus on the continental size (the area of the temperature anomaly) of the MH thermal climate response, which makes regional quantitative reconstruction critical to obtain a comprehensive understanding of the MH climate patterns. Here, we compare the annual and seasonal outputs from the most recent Paleoclimate Modelling Intercomparison Project Phase 3 (PMIP3) models with an updated synthesis of climate reconstruction over China, including, for the first time, a seasonal cycle of temperature and precipitation. Our results indicate that the main discrepancies between model and data for the MH climate are the annual and winter mean temperature. A warmer-than-present climate condition is derived from pollen data for both annual mean temperature (0.7 K on average) and winter mean temperature (1 K on average), while most of the models provide both colder-than-present annual and winter mean temperature and a relatively warmer summer, showing a linear response driven by the seasonal forcing. By conducting simulations in BIOME4 and CESM, we show that surface processes are the key factors creating the uncertainties between models and data. These results pinpoint the crucial importance of including the non-linear responses of the surface water and energy balance to vegetation changes. © Author(s) 2019.
语种	英语
scopus关键词	climate change; climate forcing; climate modeling; CMIP; data set; energy balance; general circulation model; Holocene; model validation; paleoclimate
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146803
作者单位	Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China; Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, 91191, France; CAS Center for Excellence in Life and Paleoenvironment, Beijing, 100044, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China
推荐引用方式 GB/T 7714	Lin Y.,Ramstein G.,Wu H.,et al. Mid-Holocene climate change over China: Model-data discrepancy[J],2019,15(4).
APA	Lin Y..,Ramstein G..,Wu H..,Rani R..,Braconnot P..,...&Guo Z..(2019).Mid-Holocene climate change over China: Model-data discrepancy.Climate of the Past,15(4).
MLA	Lin Y.,et al."Mid-Holocene climate change over China: Model-data discrepancy".Climate of the Past 15.4(2019).