Synchronous change of temperature and moisture over the past 50 ka in subtropical southwest China as indicated by biomarker records in a crater lake
Synchronous change of temperature and moisture over the past 50 ka in subtropical southwest China as indicated by biomarker records in a crater lake
复制标题
火山口湖生物标记记录显示西南亚热带近50 ka温湿度同步变化
DOI：
10.1016/j.quascirev.2019.04.003
复制
发表时间：
2019-05
影响因子：
4
通讯作者：
Man Meiling
中科院分区：
文献类型：
--
作者：
Tian Liping;Wang Mengyuan;Zhang Xiao;Yang Xiaoqiang;Zong Yongqiang;Jia Guodong;Zheng Zhuo;Man Meiling
Over the past few decades, studies on the Indian Summer Monsoon (ISM) have been mainly based on paleo-marine records whilst the sparsity of land records limits our understanding of the ISM evolutionary process over continental landscapes. Here, we provide paleoclimate reconstructions based onn-alkanes and branched glycerol dialkyl glycerol tetraethers (brGDGTs) from a 50-ka lacustrine sediment core collected from Lake Tengchong Qinghai in southwestern subtropical China. Our results reveal that the botanical sources of sedimentaryn-alkanes in this lake are mainly from aquatic macrophytes and terrestrial plants. The lake level evolution from the MIS 3 to the Holocene can be divided into four stages: high in the MIS 3, low in the LGM, high in last deglacial and low in mid and late Holocene. Our brGDGTs-based climate reconstructions indicate that the mean air temperature differences between the present-day and the LGM were up to about 3–4 °C. From MIS 3 to Holocene, there was a broadly and consistently synchronous trend between precipitation and air temperature in this ISM region. This is different from the asynchronous temperature and precipitation variations in the East Asian Summer Monsoon (EASM) regions in the period of last glacial termination. Our study shows that the climate in ISM regions was primarily driven by changes in June summer solar insolation at 30°N, and those glacial boundary conditions such as ice volume and sea surface temperature might also have affected the ISM.
登录
查看更多内容
影响因子：
5
作者：
E. Schefuß;V. Ratmeyer;J. Stuut;J. Jansen;Jaap S. Sinninghe Damsté
通讯作者：
E. Schefuß;V. Ratmeyer;J. Stuut;J. Jansen;Jaap S. Sinninghe Damsté
DOI：
10.11867/j.issn.1001-8166.2009.08.0874
发表时间：
2009-08
期刊：
Advances in Earth Science
影响因子：
--
作者：
Z. Jie;Guan Guo-dong
通讯作者：
Z. Jie;Guan Guo-dong
研究印度和东亚季风区全新世期间古气候对降水ΔD和Δ18O的长期控制
影响因子：
12.1
作者：
Zhiguo Rao;Yunxia Li;Jiawu Zhang;Guodong Jia;Fahu Chen
通讯作者：
Fahu Chen
影响因子：
4.6
作者：
Huguet C;Routh J;Fietz S;Lone MA;Kalpana MS;Ghosh P;Mangini A;Kumar V;Rangarajan R
通讯作者：
Rangarajan R
自末次盛冰期以来中国西南千年尺度的水文气候变化与热带印度洋有关
影响因子：
5.8
作者：
Zhang Enlou;Zhao Cheng;Xue Bin;Liu Zhonghui;Yu Zicheng;Chen Rong;Shen Ji
通讯作者：
Shen Ji