项目编号: | 1349616
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项目名称: | Climate Sensitivity to CO2 in the Early Pleistocene--a world with smaller ice sheets |
作者: | Kelsey Dyez
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承担单位: | Dyez Kelsey
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批准年: | 2013
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开始日期: | 2014-08-01
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结束日期: | 2016-07-31
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资助金额: | USD174000
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资助来源: | US-NSF
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项目类别: | Fellowship
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国家: | US
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语种: | 英语
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特色学科分类: | Geosciences - Earth Sciences
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英文关键词: | project
; early pleistocene
; pco2
; world
; climate
; long-term co2 storage
; high latitude climate cycle
; carbon cycle
; glacial ice sheet
; late pleistocene
; high-resolution atmospheric co2 concentration
; ice sheet
; national climate data center
; pco2 variability
; transient ice sheet
; ice core
; tropical climate change
; climate change
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英文摘要: | Dr. Kelsey A. Dyez has been awarded an EAR Postdoctoral Fellowship to carry out a research and education program at Columbia University's Lamont-Doherty Earth Observatory. This project aims to resolve the question of how atmospheric greenhouse gas concentrations vary in a world with smaller, more transient ice sheets. The goal is to test theories associated with climate forcing mechanisms, which will be beneficial for numerical modelers of climate change when the data is ultimately contributed to the National Climate Data Center. By directly comparing different methods for estimating pCO2 from the same geographic location and time period, this project may enhance networks among researchers who work on each method and will broaden the field's understanding of which (if any) additional factors play a role for either technique. For society, it is also important to understand further the mechanisms that impact climate in a world with smaller ice sheets than today. Additionally, by developing an outreach blog, co-teaching graduate and undergraduate courses, and mentoring a laboratory assistant, this project directly promotes broad participation and learning opportunities for students who may be underrepresented in the geosciences.
This project will examine the links between early Pleistocene tropical and high latitude climate cycles and the carbon cycle, in the period just before high-resolution atmospheric CO2 concentration (pCO2) records are available from air bubbles trapped within ice cores. This project aims to reconstruct an early Pleistocene high-resolution record of pCO2 to resolve the frequency and phase of pCO2 variability in the early Pleistocene with respect to high-latitude and tropical climate change. Such evidence may demonstrate how and when greenhouse gas concentrations changed in the early Pleistocene and thus will improve current understanding of how carbon cycles function in a world with smaller glacial ice sheets than the late Pleistocene. The results from this project will have implications for understanding the orbital-scale carbon cycle, lysocline and pH changes in the early Pleistocene, and for theories regarding polar ocean overturning which contribute to long-term CO2 storage and release. |
资源类型: | 项目
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标识符: | http://119.78.100.158/handle/2HF3EXSE/96080
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Appears in Collections: | 影响、适应和脆弱性 气候减缓与适应
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Recommended Citation: |
Kelsey Dyez. Climate Sensitivity to CO2 in the Early Pleistocene--a world with smaller ice sheets. 2013-01-01.
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