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

基本信息

  • 批准号:
    2102975
  • 负责人:
  • 金额:
    $ 25.89万
  • 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:
    2021-07-15 至 2024-06-30
  • 项目状态:
    已结题

项目摘要

The research team aims to build upon previous research using speleothems from caves in northwest and southwest Madagascar to reconstruct Late Pleistocene and Holocene climate from a Southern Hemisphere tropical site and to examine the role of climate in the ongoing alteration of the island’s ecosystems. Using previously collected samples, the researchers plan to construct high-resolution (decadal) multiproxy climate records from the Last Glacial Maximum (26,000 years ago) to the present from high-resolution (near annual resolution) analyses for periods of particular climatic interest (e.g., the 4.2 ka event, Younger Dryas). The researchers will extract organic matter from the speleothems across an interval of marked change in speleothem delta Carbon-13 and measure biomarker concentrations and the same to test a newly developed “subsistence shift hypothesis” for the disappearance of Madagascar’s megafauna. Speleothem fluid inclusion water isotopes, combined with carbonate Oxygen isotopes, will be examined as a tool to estimate paleotemperatures over the past 117,000 years for southwest Madagascar and the past 26,000 years for northwest Madagascar.The goal of the project is to produce long, high resolution records of climate from the Southern Hemisphere tropics. These data will aid in understanding the influences of Inter Tropical Convergence Zone (ITCZ) migration, western Indian Ocean sea-surface temperature (SST), and regional precipitation. In particular the project will investigate whether the Indian Ocean Monsoon in the Northern versus Southern Hemispheres vary in or out of phase at various timescales and test current hypotheses on tropical rainfall variation.The potential Broader Impacts include the integration of science across the fields of paleoclimatology, anthropology, and biology to provide background climate data needed for interpreting the impact of climate on a variety of fossil communities of the past. The research team will produce educational materials and exhibits prepared for a general audience to heighten public awareness of Tsimanampesotse National Park’s natural history, biodiversity, and extinction events. The project will help develop a better understanding of the causes of decadal-scale climate variability which can aid in forecasting possible changes in rainfall in a country that experiences severe drought and flooding on inter-annual time scales and relies on subsistence farming for survival.This project includes supporting an early career female post-doctoral scholar in the United States and collaboration with Malagasy scientists and students as well.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.
该研究小组的目标是在先前的研究基础上,利用马达加斯加西北部和西南部洞穴中的洞穴化石,从南半球热带地区重建晚更新世和全新世气候,并检查气候在该岛生态系统持续变化中的作用。利用先前收集的样本,研究人员计划通过高分辨率(接近年分辨率)分析特定气候兴趣时期(例如4.2 ka事件,新仙女木期),构建从末次盛冰期(26000年前)到现在的高分辨率(年代际)多代理气候记录。这组科学家将在洞穴三角洲碳-13发生显著变化的一段时间内,从洞穴中提取有机物,并测量生物标志物的浓度,从而检验一个新提出的关于马达加斯加巨型动物消失的“生存转移假说”。岩石层流体包裹体水同位素,结合碳酸盐氧同位素,将作为一种工具来评估马达加斯加西南部过去11.7万年的古温度,以及马达加斯加西北部过去2.6万年的古温度。该项目的目标是制作南半球热带气候的长、高分辨率记录。这些数据将有助于了解热带辐合带(ITCZ)迁移、西印度洋海表温度(SST)和区域降水的影响。特别是,该项目将调查在北半球和南半球的印度洋季风在不同的时间尺度上是同相变化还是非同相变化,并检验目前关于热带降雨变化的假设。潜在的更广泛的影响包括整合跨古气候学、人类学和生物学领域的科学,为解释气候对过去各种化石群落的影响提供所需的背景气候数据。研究小组将制作教育材料和为普通观众准备的展品,以提高公众对tsimanampesose国家公园的自然历史、生物多样性和灭绝事件的认识。该项目将有助于更好地了解十年尺度气候变化的原因,从而有助于预测一个在年际时间尺度上经历严重干旱和洪水并依靠自给农业生存的国家的降雨量可能发生的变化。该项目包括支持一位在美国从事早期职业的女性博士后学者,并与马达加斯加的科学家和学生合作。该奖项反映了美国国家科学基金会的法定使命,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(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Tropical Indian Ocean basin hydroclimate at the Mid- to Late-Holocene transition and the double drying hypothesis
  • DOI:
    10.1016/j.quascirev.2022.107837
  • 发表时间:
    2022-11
  • 期刊:
  • 影响因子:
    4
  • 作者:
    N. Scroxton;S. Burns;D. McGee;L. Godfrey;Lovasoa Ranivoharimanana;P. Faina;Benjamin H. Tiger
  • 通讯作者:
    N. Scroxton;S. Burns;D. McGee;L. Godfrey;Lovasoa Ranivoharimanana;P. Faina;Benjamin H. Tiger
Hydroclimate variability in the Madagascar and Southeast African summer monsoons at the Mid- to Late-Holocene transition
  • DOI:
    10.1016/j.quascirev.2022.107874
  • 发表时间:
    2023-01
  • 期刊:
  • 影响因子:
    4
  • 作者:
    N. Scroxton;S. Burns;D. McGee;L. Godfrey;Lovasoa Ranivoharimanana;P. Faina;Benjamin H. Tiger
  • 通讯作者:
    N. Scroxton;S. Burns;D. McGee;L. Godfrey;Lovasoa Ranivoharimanana;P. Faina;Benjamin H. Tiger
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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--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
  • 批准号:
    2102976
  • 财政年份:
    2021
  • 资助金额:
    $ 25.89万
  • 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:
    $ 25.89万
  • 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:
    $ 25.89万
  • 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:
    $ 25.89万
  • 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:
    $ 25.89万
  • 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:
    $ 25.89万
  • 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:
    $ 25.89万
  • 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:
    $ 25.89万
  • 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:
    $ 25.89万
  • 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:
    $ 25.89万
  • 项目类别:
    Continuing Grant

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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:
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合作研究:P2C2——重建落基山脉南部近2000年暖季温度
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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:
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    $ 25.89万
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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:
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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:
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合作研究:P2C2——使用古老的沉降木扩展大西洋湾盆地水文气候的树轮重建
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  • 批准号:
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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
合作研究:P2C2——评估过去千年北大西洋热带气旋活动的气候和随机强迫
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