Changes in Glacial Circulation and Biogeochemistry Associated with Changing Southern Ocean Winds
Changes in Glacial Circulation and Biogeochemistry Associated with Changing Southern Ocean Winds
批准号:
0081686
负责人:
Daniel Sigman
金额:
$40.59万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2000
资助国家:
美国
项目状态:
已结题
起止时间:
2000-09-01 至 2004-08-31
中文摘要
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英文摘要
Summary: This ESH project will address the hypothesis that shifts of the westerly winds in the South Atlantic resulted in changes of primary production during the last glacial period. A combined circulation and biogeochemical model will be developed, using 13N as one of the tracers for production. Results of the model will first be compared against modern 13N distributions, and the model will then be applied to alternate climate scenarios for the last glacial using sedimentary 13N as test prodictions.
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批准号:2148921
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项目类别:Standard Grant
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资助金额:$36.6万
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财政年份:2023
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负责人:Daniel Sigman
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依托单位:
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批准号:2303548
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财政年份:2023
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负责人:Daniel Sigman
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依托单位:
Collaborative Research: Bounding global ice volumes over the last glacial cycle using reconstructions of Bering Strait flooding
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批准号:2054780
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项目类别:Standard Grant
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资助金额:$31.38万
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财政年份:2021
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负责人:Daniel Sigman
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依托单位:
US GEOTRACES GP17-OCE: Nitrate isotopic signals of the Southern Ocean's circulation and biogeochemistry
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批准号:2049416
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项目类别:Standard Grant
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资助金额:$48.65万
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财政年份:2021
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负责人:Daniel Sigman
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依托单位:
A high-density, high-precision zonal section of nitrate isotopes across the South Indian Ocean
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批准号:1851430
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项目类别:Standard Grant
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资助金额:$29.65万
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财政年份:2019
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负责人:Daniel Sigman
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依托单位:
Collaborative Research: US GEOTRACES PMT: Investigating geochemical tracers of the Pacific nitrogen cycle and budget
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批准号:1736652
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项目类别:Continuing Grant
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资助金额:$36.14万
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财政年份:2018
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负责人:Daniel Sigman
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依托单位:
Collaborative Research: Identifying the Role of Basin-scale Climate Variability in the Decline of Atlantic Corals
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批准号:1536368
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项目类别:Standard Grant
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资助金额:$26.48万
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财政年份:2015
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负责人:Daniel Sigman
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依托单位:
High-resolution, Assemblage-specific Records of Diatom-bound N Isotopes from the Indian Sector of the Antarctic Ocean
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批准号:1401489
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项目类别:Standard Grant
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资助金额:$49.19万
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财政年份:2014
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负责人:Daniel Sigman
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依托单位:
Understanding the nitrogen isotopes of planktonic foraminifera: A modern Sargasso Sea study
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批准号:1060947
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项目类别:Standard Grant
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资助金额:$61.99万
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财政年份:2011
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负责人:Daniel Sigman
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依托单位:
Collaborative Research: Isotopic and Compositional Investigation of the Sources and Interactions of Reactive Nitrogen in the Marine Atmosphere at Bermuda
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批准号:1044997
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项目类别:Continuing Grant
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资助金额:$38.98万
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财政年份:2010
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负责人:Daniel Sigman
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依托单位:
Collaborative Research: GEOTRACES Atlantic Section Nitrate Isotope Measurements
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批准号:0960802
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项目类别:Standard Grant
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资助金额:$27.06万
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财政年份:2010
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负责人:Daniel Sigman
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依托单位:
MRI: Acquisition of Stable Isotope Instrumentation for the Biogeosciences at Princeton University
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批准号:0922345
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项目类别:Standard Grant
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资助金额:$51.61万
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财政年份:2009
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负责人:Daniel Sigman
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依托单位:
Collaborative research: Non-Local Bacterial Transport of Nitrate within Sediments Underlying Oxygen Deficient Zones: A new Twist in the N Cycle
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批准号:0727178
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项目类别:Standard Grant
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资助金额:$10.95万
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财政年份:2007
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负责人:Daniel Sigman
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依托单位:
Collaborative Proposal: BEST: Nitrogen supply for new production and its relation to climatic conditions on the eastern Bering Sea Shelf
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批准号:0612198
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项目类别:Standard Grant
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资助金额:$46.61万
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财政年份:2006
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负责人:Daniel Sigman
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依托单位:
Application of a New Method for Isotopic Analysis of Diatom Microfossil-bound Nitrogen
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批准号:0453680
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:2005
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负责人:Daniel Sigman
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依托单位:
CAREER: Nitrate Isotopes and Biogeochemistry: A Plan for Coupling
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批准号:0447570
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项目类别:Continuing Grant
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资助金额:$0.0万
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财政年份:2005
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负责人:Daniel Sigman
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依托单位:
Collaborative Research: Isotopic Constraints on the Nitrogen Dynamics of the Bering Sea
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批准号:0136449
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项目类别:Standard Grant
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资助金额:$19.19万
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财政年份:2002
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负责人:Daniel Sigman
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依托单位:
BIOCOMPLEXITY: COLLABORATIVE RESEARCH: OCEANIC N2 FIXATION AND GLOBAL CLIMATE
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批准号:9981479
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项目类别:Continuing Grant
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资助金额:$13.97万
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财政年份:2000
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负责人:Daniel Sigman
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依托单位:
海外基金