A preliminary integrated analysis of regional paleoclimate variations in China over the past-21 ka
文献类型：期刊论文
| 作者 | Lu, Huayu7; Zhao, Yan6; Yang, Xiangdong5; Wu, Haibing4; Zhao, Cheng7; Wang, Jingjing7; Wang, Xiaoyong7; Kuang, Xueyuan3; Zhang, Xiaojian7; Ma, Chunmei7 |
| 刊名 | GLOBAL AND PLANETARY CHANGE
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 240页码:20 |
| 关键词 | Regional paleoclimate Proxy-based paleoclimate reconstruction Paleoclimate simulation Asian monsoon Arid climate The past-21 ka China |
| ISSN号 | 0921-8181 |
| DOI | 10.1016/j.gloplacha.2024.104510 |
| 英文摘要 | In this study, we employ biological, geochemical and mineral, and physical proxies to quantitatively and semi-quantitatively reconstruct regional paleoclimate variations in China over the past-21 thousand years (ka). We have constructed state-of-the-art transfer functions between proxies and climatic variables in East Asia, revealing substantial paleoclimate variability, and demonstrate significant diversity of paleoclimate variations in regions of China over the past-21 ka. Compared with observational data between 1961 and 1990, averaged mean annual temperature (MAT) was-5 degrees C (3 -8 degrees C) lower during the Last Glacial Maximum (LGM,-21 +/- 3 ka), and- 2 degrees C (1 -3 degrees C) higher during Holocene Optimum (HO, +/- 9 ka) in China; while averaged mean annual precipitation (MAP) and averaged summer precipitation varied between 30 and 150%, with enhanced seasonality during the warmer Holocene (8 -5 ka). Our quantitative and semi-quantitative paleoclimate reconstructions reveal both similarities and contrasts with previous studies of regional temperature and precipitation variability. The most remarkable paleoclimate variability is recorded in the transitional zone between the humid monsoon and arid desert regions of central and northern China. We conducted a dynamic downscaling paleoclimate simulation with a regional climate model (RegCM4), using the output from the fully-forced transient simulation of the global climate (TraCE-21 K) as the prescribed boundary conditions, to simulate regional climate changes at high spatial resolution in China over the past-21 ka. The results improve paleoclimate simulations at regional scales, but reveal differences in comparison with TraCE-21 K, thereby highlighting uncertainties in the simulation modeling. Moreover, we compare proxy-based paleoclimate reconstructions and the output of TraCE-21 K to identify inconsistencies in relation to regional paleoclimate variations, and confirm a generally consistent warming trend in MAT from the LGM to the HO followed by a cooling trend during the late Holocene. An overall increase in both annual and summer precipitation is observed from LGM to Holocene. This general paleoclimate pattern is likely to have been driven by northern hemisphere ice volume and atmospheric greenhouse gas concentrations (GHGs) during the last deglaciation, and boreal summer insolation during the Holocene. This study represents the first attempt to use multi sources and large datasets of proxy reconstructions and numerical simulations to evaluate regional paleoclimate variability in China since the LGM. Our research provides a comprehensive overview of climate change over the past 21 ka and underscores the critical importance of conducting high-resolution simulations and quantitative paleoclimate studies. This approach is essential for deciphering patterns of paleoclimate change that are currently poorly defined. |
| WOS关键词 | LAST GLACIAL MAXIMUM ; ASIAN MONSOON ; QUANTITATIVE RECONSTRUCTION ; TIBETAN PLATEAU ; HOLOCENE TEMPERATURE ; CLIMATE-CHANGE ; PRECIPITATION ; VARIABILITY ; RAINFALL ; BRGDGTS |
| 资助项目 | Ministry of Science and Technology of China[2023YFF0804703] ; Ministry of Science and Technology of China[2016YFA0600500] ; Program of Global Change and Mitigation |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001272313500001 |
| 出版者 | ELSEVIER |
| 资助机构 | Ministry of Science and Technology of China ; Program of Global Change and Mitigation |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/207344]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Lu, Huayu |
| 作者单位 | 1.Sun Yat Sen Univ, Sch Earth Sci & Engn, Zhuhai 519082, Peoples R China 2.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteorol, Nanjing 210044, Peoples R China 3.Nanjing Univ, Sch Atmospher Sci, Nanjing 210023, Peoples R China 4.Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China 5.Chinese Acad Sci, State Key Lab Lake Sci & Environm, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China 6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 7.Nanjing Univ, Sch Geog & Ocean Sci, Nanjing 210023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Huayu,Zhao, Yan,Yang, Xiangdong,et al. A preliminary integrated analysis of regional paleoclimate variations in China over the past-21 ka[J]. GLOBAL AND PLANETARY CHANGE,2024,240:20. |
| APA | Lu, Huayu.,Zhao, Yan.,Yang, Xiangdong.,Wu, Haibing.,Zhao, Cheng.,...&Guo, Zhengtang.(2024).A preliminary integrated analysis of regional paleoclimate variations in China over the past-21 ka.GLOBAL AND PLANETARY CHANGE,240,20. |
| MLA | Lu, Huayu,et al."A preliminary integrated analysis of regional paleoclimate variations in China over the past-21 ka".GLOBAL AND PLANETARY CHANGE 240(2024):20. |
入库方式： OAI收割
来源：地理科学与资源研究所
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