[口头报告]Spatial Heterogeneity of the Global Warming in East Asia and Summer Monsoon weakening: New Evidence from Chinese Speleothem Records

Spatial Heterogeneity of the Global Warming in East Asia and Summer Monsoon weakening: New Evidence from Chinese Speleothem Records
编号:1331 稿件编号:1129 访问权限:私有 更新:2023-04-10 11:12:01 浏览:789次 口头报告

报告开始:2023年05月08日 08:53 (Asia/Shanghai)

报告时间:13min

所在会议:[1A] 1A、第四纪地质与全球变化 » [1A-4] 1A-4 第四纪地质与全球变化

暂无文件

摘要
As the Earth’s atmosphere warms, the climate changes dynamically and thermodynamically, which inevitably influences East Asian summer monsoon (EASM) and the oxygen isotope (δ18O) compositions of its precipitations. Here, we provide for the first time a precisely dated (±3 yrs, 2s) and high-resolution speleothemδ18O record from Shandong Peninsula, eastern China. We further extracted the first principal component (PC1) and monte carlo empirical orthogonal function (MCEOF1) among six high-resolution (≤1 year) speleothem records in EASM domains. They indicated a long-term weakening trend of EASM within the Global Warming (GW) period, which are virtually consistent and coherent with the GW trend with two slowdowns and two accelerations. Diagnostic results using CERA-20C dataset revealed the anomalous moistures flux patterns in Asian summer monsoon (ASM) domains, with one anticyclone and two cyclones of moistures flux, which significantly weakened the synthesized southerly moistures in East Asia. The ‘sandwich pattern’ of spatial heterogeneity of GW in ASM domains, which is controlled by both greenhouse gas and aerosols, nicely integrates the anomalous moistures flux patterns and provides to link between the GW and speleothem δ18O.This observation also suggests that the coherent variation of the speleothem δ18O records in EASM region over the last century is a manifestation of large-scale dynamical changes of the summer monsoon circulation in tropics-subtropics.

 
关键字
Speleothem δ18O, monsoon weakening, GW, CERA-20C
报告人
赵景耀
西安交通大学

稿件作者
赵景耀 西安交通大学
发表评论
验证码 看不清楚,更换一张
全部评论

联系我们

会务总协调、疫情防控:

沈焕锋(13163235536;shenhf@whu.edu.cn)

管小彬(18007973663;guanxb@whu.edu.cn)

魏秀琴(15871750333;weixiuqin@whu.edu.cn)

会场安排:

沈焕锋(13163235536;shenhf@whu.edu.cn)

李长冬(15327198910;lichangdong2008@126.com)

张 亮(15827200707;lzhang@whigg.ac.cn)

徐 鹏(13554674258;xupengwhu@whu.edu.cn)

学术安排:

王伦澈(13349889828;wang@cug.edu.cn)

庄艳华(13349889826;zhuang@apm.ac.cn)

李星华(15527964369;lixinghua5540@whu.edu.cn)

会议注册:

管小彬(18007973663;guanxb@whu.edu.cn)

赵 林(18071070948;linzhao@whu.edu.cn)

会议财务:

张传喜(13627137374;zhangchuanxi@whu.edu.cn)

石玉婷(13476286537;yutingshi@vip.qq.com)

商业赞助:

阮志敏(15871826028;ruanzm@whu.edu.cn)

黄文丽(13693626212;wenli.huang@whu.edu.cn)

会议服务,酒店预定,网站、注册系统服务:

曹雪峰(18971567453;carol@chytey.com)

金钰壹(18271358859;jinyuyi@whu.edu.cn)

会务总协调、疫情防控:
沈焕锋(13163235536;shenhf@whu.edu.cn)
管小彬(18007973663;guanxb@whu.edu.cn)
魏秀琴(15871750333;weixiuqin@whu.edu.cn)
会场安排:
沈焕锋(13163235536;shenhf@whu.edu.cn)
李长冬(15327198910;lichangdong2008@126.com)
张 亮(15827200707;lzhang@whigg.ac.cn)
徐 鹏(13554674258;xupengwhu@whu.edu.cn)
学术安排:
王伦澈(13349889828;wang@cug.edu.cn)
庄艳华(13349889826;zhuang@apm.ac.cn)
李星华(15527964369;lixinghua5540@whu.edu.cn)
会议注册:
管小彬(18007973663;guanxb@whu.edu.cn)
赵 林(18071070948;linzhao@whu.edu.cn)
会议财务:
张传喜(13627137374;zhangchuanxi@whu.edu.cn)
石玉婷(13476286537;yutingshi@vip.qq.com)
商业赞助:
阮志敏(15871826028;ruanzm@whu.edu.cn)
黄文丽(13693626212;wenli.huang@whu.edu.cn)
会议服务,酒店预定,网站、注册系统服务:
曹雪峰(18971567453;carol@chytey.com)
金钰壹(18271358859;jinyuyi@whu.edu.cn)
注册缴费 提交稿件