| 项目编号: | 1304270
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| 项目名称: | Collaborative Research: Atmospheric measurements of O2/N2 ratio, CO2 concentration, and CO2 isotopes in support of the Arctic Observing Network |
| 作者: | Ralph Keeling
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| 承担单位: | University of California-San Diego Scripps Inst of Oceanography
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| 批准年: | 2013
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| 开始日期: | 2014-01-15
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| 结束日期: | 2018-12-31
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| 资助金额: | USD1404409
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| 资助来源: | US-NSF
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| 项目类别: | Continuing grant
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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 - Polar
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| 英文关键词: | atmospheric co2
; measurement
; co2 datum
; o2/n2 ratio
; o2/n2
; arctic site
; support
; arctic ocean
; rapid arctic warming
; arctic o2/n2 measurement
; arctic change
; stable isotope
; 13c/12c ratio
; arctic sampling station
; background arctic air
; foster collaboration
; co2 isotope
; future researcher
; ar/n2 ratio
; time series measurement
; atmospheric co2 concentration
; 18o/16o ratio
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| 英文摘要: | This project will support a continuation of time series measurements of atmospheric CO2 concentration, the stable isotopes of CO2, and the O2/N2 and Ar/N2 ratios of air samples collected at Arctic sampling stations. Measurements of O2/N2 ratio at Arctic sites, when also combined with measurements at lower latitudes, have the potential to help quantify the magnitude of the seasonal air-sea exchanges of O2 with the Arctic Ocean, which could be a key indicator of biogeochemical change in a time of rapid Arctic warming. Although the land biosphere also contributes to seasonal variations in O2/N2 ratio, the ocean contribution can be resolved by combining O2/N2 and CO2 data to compute the tracer atmospheric potential oxygen (APO), which is effectively an atmospheric tracer of ocean biology and chemistry. This work will draw on support from international collaborators, with the potential to shape Arctic O2/N2 measurements by the international community into a critical component of the AON. Measurements of the 13C/12C ratio and 18O/16O ratio at Arctic sites also may provide key early warning indicators of ecological change. The project will support the archiving of aliquots of atmospheric CO2 in background arctic air to be used for open-ended purposes by future researchers. Finally, the project will support graduate student involvement in the collection and foster collaborations among scientific groups engaged in measurements of O2 and CO2 isotopes in support of detecting Arctic change. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/97420
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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: | |
Ralph Keeling. Collaborative Research: Atmospheric measurements of O2/N2 ratio, CO2 concentration, and CO2 isotopes in support of the Arctic Observing Network. 2013-01-01.
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