Collaborative Research: P2C2--Speleothem Constraints on Seasonal Hydroclimate Variability in Mainland Southeast Asia since the Late Pleistocene

合作研究:P2C2--晚更新世以来东南亚大陆洞穴水文季节变化的制约

基本信息

  • 批准号:
    2102976
  • 负责人:
  • 金额:
    $ 16.41万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2021
  • 资助国家:
    美国
  • 起止时间:
    2021-07-01 至 2024-06-30
  • 项目状态:
    已结题

项目摘要

This project aims to characterize the Asian summer and winter monsoon circulation and local hydroclimate across Mainland Southeast Asia (MESA) during the last ~45 thousand years using a suite of speleothem records from caves that extend across a critical geographical divide between Laos and Vietnam, two countries with very distinct seasonal rainfall climatologies. The overarching goal of this work is to explore the dynamic response of summer and winter Asian monsoon variability to changing external drivers, such as insolation, and internal climate variability which will contribute to improved understanding of large-scale hydrological variability in a vulnerable region. Specifically, the researchers will develop a new set of past climate records utilizing multiple environmental tracers (Carbon and Oxygen isotopes, trace elements such as Magnesium/Calcium, radiocarbon) in precisely dated speleothems spanning at least the last ~45 thousand years. Additionally, a detailed cave monitoring program will aid the interpretation of data obtained from the speleothems. The results will be integrated with other regional and global records of past climate variability and state-of-the-art climate model simulations to diagnose the dominant mechanisms driving hydroclimate variability on sub-decadal to millennial timescales in the MESA region. The research will address the following specific objectives: (1) Determine the summer and fall/winter response of MSEA hydroclimate to orbital and millennial-scale forcing, (2) Determine the response of MSEA hydroclimate to decadal to multidecadal scale sea surface temperature variability, and (3) Synthesize data with other available records to elucidate the spatiotemporal patterns of MSEA hydroclimate, which, combined with paleoclimate model analyses, will allow us investigation of the dynamical mechanisms underlying summer and fall/winter monsoon variability. Speleothem oxygen isotope records from three study sites will serve as a proxy for summer monsoon intensity, dominated by the degree of upstream rainout over the Indian Ocean and trace element measurements will provide robust evidence for past variations in local water balance at each cave site, with Laos sites recording summer rainfall and Vietnam sites recording fall/winter rainfall.The potential Broader Impacts include a better understanding of the monsoon dynamics and related hydroclimate in a vulnerable region by generating quantitative and well-dated multi-millennial climate records from speleothems. The project will provide scientific training, mentorship and professional development for several undergraduate (including summer research experience) and one graduate (Ph.D.) students, as well as one postdoctoral researcher at three universities including two minority serving institutions. Additionally, the project will support an early career scientist. The results of the project will be part of ongoing and newly developed public outreach activities both in The US and the study region (Laos/Vietnam) involving students and postdocs. The project will also foster international and transdisciplinary collaborations including with local communities.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
该项目旨在描述亚洲夏季和冬季季风环流以及东南亚大陆(梅萨)在过去约4.5万年的当地水文气候,使用一套洞穴记录,这些洞穴跨越老挝和越南之间的关键地理分界线,这两个国家具有非常不同的季节性降雨气候。这项工作的总体目标是探索夏季和冬季亚洲季风变化的动态响应不断变化的外部驱动因素,如日照,和内部气候变化,这将有助于提高对大规模的水文变化的理解在一个脆弱的地区。具体来说,研究人员将利用多种环境示踪剂(碳和氧同位素,镁/钙等微量元素,放射性碳)开发一套新的过去气候记录,这些记录至少跨越了过去4.5万年。此外,一个详细的洞穴监测计划将有助于解释从洞穴沉积物获得的数据。研究结果将与其他区域和全球过去气候变率记录和最先进的气候模式模拟相结合,以诊断在梅萨地区近十年至千年时间尺度上驱动水文气候变率的主要机制。这项研究将涉及以下具体目标:(1)确定夏季和秋季/冬季MSEA水文气候对轨道和千年尺度强迫的响应,(2)确定MSEA水文气候对十年到多年尺度海面温度变率的响应,以及(3)将数据与其他可用记录相结合,以阐明MSEA水文气候的时空模式,结合古气候模式分析,将使我们能够调查的动力机制,夏季和秋季/冬季风的变化。来自三个研究地点的洞穴沉积物氧同位素记录将作为夏季季风强度的代理,主要由印度洋上游降雨的程度决定,微量元素测量将为每个洞穴地点过去当地水平衡的变化提供强有力的证据,老挝观测点记录了夏季降雨量,越南观测点记录了秋季降雨量。潜在的更广泛的影响包括通过从洞穴沉积物中产生定量的和日期明确的多千年气候记录,更好地了解脆弱地区的季风动力学和相关水文气候。该项目将为几名本科生(包括夏季研究经验)和一名研究生(博士)提供科学培训,指导和专业发展。在三所大学,包括两个少数民族服务机构,有一名博士后研究员。此外,该项目将支持一个早期的职业科学家。该项目的成果将成为美国和研究区域(老挝/越南)正在进行的和新开发的公共宣传活动的一部分,涉及学生和博士后。这个奖项反映了NSF的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。

项目成果

期刊论文数量(1)
专著数量(0)
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William McGee其他文献

MIDODRINE-INDUCED BRADYCARDIA IN CRITICALLY ILL PATIENT
  • DOI:
    10.1016/j.chest.2019.08.1627
  • 发表时间:
    2019-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Nagham Jafar;William McGee
  • 通讯作者:
    William McGee
HOLY MOLY! A RARE CASE OF A CAVITARY LESION SECONDARY TO LEGIONELLA PNEUMOPHILA IN AN IMMUNOCOMPETENT PATIENT
  • DOI:
    10.1016/j.chest.2019.08.521
  • 发表时间:
    2019-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Quazi Kamran Uddin;William McGee;Kamran Sherwani;Peters Okonoboh
  • 通讯作者:
    Peters Okonoboh
The electrochemistry and scanning tunnelling microscopy of the flavoprotein, putidaredoxin reductase from Pseudomonas putida
恶臭假单胞菌黄素蛋白恶臭氧还蛋白还原酶的电化学和扫描隧道显微镜
  • DOI:
  • 发表时间:
    2002
  • 期刊:
  • 影响因子:
    0
  • 作者:
    William McGee;D. Djuricic;Kevin Lorimer;L. Wong;H. Hill
  • 通讯作者:
    H. Hill
CATASTROPHIC AIRWAY COMPLICATIONS STATUS POST ANTERIOR CERVICAL DISCECTOMY AND FUSION
  • DOI:
    10.1016/j.chest.2019.08.1133
  • 发表时间:
    2019-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Quazi Kamran Uddin;William McGee;Mitchell Onwochei-Ashei;Armand Golchin
  • 通讯作者:
    Armand Golchin

William McGee的其他文献

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{{ truncateString('William McGee', 18)}}的其他基金

Collaborative Research: P2C2--MADagascar Caves And Paleoclimate II (MADCAP II), Continuing Study of Climate Variability in the Southern Hemisphere of the Western Indian Ocean
合作研究:P2C2--MA达加斯加洞穴和古气候II (MADCAP II),西印度洋南半球气候变化的持续研究
  • 批准号:
    2102975
  • 财政年份:
    2021
  • 资助金额:
    $ 16.41万
  • 项目类别:
    Standard Grant
Collaborative Research: Temperature and atmospheric circulation history of high-latitude Canada across interglacials of the past 1.5 Myr from cave deposits
合作研究:来自洞穴沉积物的过去 1.5 Myr 间冰期加拿大高纬度地区的温度和大气环流历史
  • 批准号:
    2103100
  • 财政年份:
    2021
  • 资助金额:
    $ 16.41万
  • 项目类别:
    Standard Grant
Collaborative Research: Regional hydrologic and vegetation changes over the last 150 kyr in the Searles and Death Valley basins
合作研究:塞尔斯和死亡谷盆地过去 150 公里的区域水文和植被变化
  • 批准号:
    1903544
  • 财政年份:
    2019
  • 资助金额:
    $ 16.41万
  • 项目类别:
    Standard Grant
Collaborative Research: P2C2: Reconstructing Northeast Mexico Hydroclimate since the Last Interglacial Period
合作研究:P2C2:重建末次间冰期以来墨西哥东北部的水文气候
  • 批准号:
    1804512
  • 财政年份:
    2019
  • 资助金额:
    $ 16.41万
  • 项目类别:
    Standard Grant
Collaborative Research: Quantifying precipitation changes in the South American subtropics over the late Pleistocene
合作研究:量化南美亚热带晚更新世降水变化
  • 批准号:
    1702588
  • 财政年份:
    2017
  • 资助金额:
    $ 16.41万
  • 项目类别:
    Standard Grant
Collaborative Research: P2C2--Madagascar Caves and Paleoclimate (MADCAP), Investigating Climate Variability in the Southern Hemisphere of the Western Indian Ocean
合作研究:P2C2--马达加斯加洞穴和古气候(MADCAP),调查西印度洋南半球的气候变化
  • 批准号:
    1702691
  • 财政年份:
    2017
  • 资助金额:
    $ 16.41万
  • 项目类别:
    Continuing Grant
Collaborative Research: Speleothem records of permafrost thaw and paleoclimate in the North American Arctic
合作研究:北美北极永久冻土融化和古气候的洞穴记录
  • 批准号:
    1607968
  • 财政年份:
    2016
  • 资助金额:
    $ 16.41万
  • 项目类别:
    Standard Grant
Early Career: Technical support for a uranium-series isotope geochemistry laboratory focused on Earth?s climate and surface processes
早期职业生涯:为专注于地球气候和表面过程的铀系同位素地球化学实验室提供技术支持
  • 批准号:
    1439559
  • 财政年份:
    2015
  • 资助金额:
    $ 16.41万
  • 项目类别:
    Continuing Grant
Collaborative Research: Insights into North African climate variability over the last 1.1 million years from dust fluxes and leaf wax isotopes
合作研究:从尘埃通量和叶蜡同位素洞察过去 110 万年北非气候变化
  • 批准号:
    1502985
  • 财政年份:
    2015
  • 资助金额:
    $ 16.41万
  • 项目类别:
    Standard Grant
Collaborative Research: Reconstructing Interactions Between the East Asian Monsoon and Westerly Jet at Multiple Timescales via the Flux and Provenance of Eolian and Fluvial Supply
合作研究:通过风成和河流供给的通量和来源重建东亚季风和西风急流在多个时间尺度上的相互作用
  • 批准号:
    1434138
  • 财政年份:
    2014
  • 资助金额:
    $ 16.41万
  • 项目类别:
    Continuing Grant

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相似海外基金

Collaborative Research: P2C2--Medieval to Modern Climate Variability and Climate Change in the Great Plains
合作研究:P2C2——中世纪到现代的气候变率和大平原的气候变化
  • 批准号:
    2201243
  • 财政年份:
    2022
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合作研究:P2C2——重建落基山脉南部近2000年暖季温度
  • 批准号:
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合作研究:P2C2——来自水下洞穴的格陵兰Stadials和Interstadials期间的大陆温度变化
  • 批准号:
    2202644
  • 财政年份:
    2022
  • 资助金额:
    $ 16.41万
  • 项目类别:
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Collaborative Research: P2C2--Continental Temperature Variability during Greenland Stadials and Interstadials from Subaqueous Speleothems
合作研究:P2C2——来自水下洞穴的格陵兰Stadials和Interstadials期间的大陆温度变化
  • 批准号:
    2202682
  • 财政年份:
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  • 资助金额:
    $ 16.41万
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Collaborative Research: P2C2--Constraints on Last Interglacial and Late Holocene Global Mean Sea Level and Fingerprinting Polar Ice Mass Flux from Broadly Distributed Coastal Caves
合作研究:P2C2——对末次间冰期和晚全新世全球平均海平面的约束以及广泛分布的沿海洞穴的极地冰质量通量指纹识别
  • 批准号:
    2202698
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    2022
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    $ 16.41万
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  • 批准号:
    2202857
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  • 批准号:
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    $ 16.41万
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  • 批准号:
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Collaborative Research: P2C2--Assessing Climate and Stochastic Forcing of North Atlantic Tropical Cyclone Activity over the Past Millennium
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  • 批准号:
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  • 资助金额:
    $ 16.41万
  • 项目类别:
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