| DOI: | 10.2172/1095809
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| 报告号: | DOE-MERCED--0007094
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| 报告题名: | Quantifying Carbon-Climate Processes at the Regional Scale Using Atmospheric Carbonyl Sulfide |
| 作者: | Campbell, Elliott [Univ. of California, Merced, CA (United States)]; Berry, Joe [Carnegie Inst. of Washington, Washington, DC (United States)]; Torn, Margaret [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)]; David, Billesbach [Univ.
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| 出版年: | 2013
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| 发表日期: | 2013-10-08
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| 总页数: | 1
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | carbon cycle
; carbonyl sulfide
; carbon dioxide
; primary production
; soil processes
; climate change
; eddy flux
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| 中文主题词: | 碳
; 二氧化碳
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| 主题词: | CARBON
; CARBON DIOXIDE
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| 英文摘要: | Atmospheric carbonyl sulfide (COS) analysis has the potentially transformative capability for partitioning the regional carbon flux into respiration and photosynthesis components. This emerging approach is based on the observation that continental atmospheric CO2 gradients are dominated by net ecosystem fluxes while continental atmospheric COS gradients are dominated by photosynthesis-related plant uptake. Regional flux partitioning represents a critical knowledge gap due to a lack of robust methods for regional-scale flux partitioning and large uncertainties in forecasting carbon-climate feedbacks. Our completed project characterized the relationship between COS and CO2 surface fluxes using a novel measurement and modeling system in a winter wheat field at the U.S. Department of Energy?s Atmospheric and Radiation Measurement program Central Facility (DOE-ARM CF). The scope of this project included canopy flux measurements, soil flux measurements, regional atmospheric modeling, and analysis of COS and CO2 airborne observations at SGP. Three critical discoveries emerged from this investigation: (1) the new measurement system provided the first field evidence of a robust relationship between COS leaf fluxes and GPP; (2) a previously unknown seasonal soil source of COS was observed and characterized; (3) the regional atmospheric analysis of airborne measurements provided the first COS-based constraints on GPP parameterizations used in earth systems models. Dissemination of these results includes three publications [Billesbach et al., In Press; Campbell et al., In Preparation; Seibt et al., In Review], three presentations at the AGU Fall Meeting (2012), and four invited presentations to department seminars. We have leveraged this foundational project to continue our work on understanding carbon cycle processes at large scales through one funded project (DOE Lab Fee, 2012-2015) and one proposal that is under review (DOE/NASA/USDA/NOAA, 2014-2016). |
| URL: | http://www.osti.gov/scitech/servlets/purl/1095809
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/40952
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1095809.pdf（97KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Campbell, Elliott [Univ. of California, Merced, CA ,Berry, Joe [Carnegie Inst. of Washington, Washington, DC ,Torn, Margaret [Lawrence Berkeley National Lab. ,et al. Quantifying Carbon-Climate Processes at the Regional Scale Using Atmospheric Carbonyl Sulfide. 2013-01-01.
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