Collaborative Research: Improving Estimated Fluxes of Greenhouse Gases over North America Using a Receptor-Oriented Modeling Framework and In-situ Atmospheric Measurements
合作研究:使用面向受体的建模框架和原位大气测量来改进北美温室气体的估计通量
基本信息
- 批准号:0830916
- 负责人:
- 金额:$ 21.6万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2009
- 资助国家:美国
- 起止时间:2009-01-01 至 2011-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The work aims to establish accurate top-down estimates of the surface sources and sinks for important greenhouse gases, including carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and carbon monoxide (CO) over North America, and address individual science questions, particularly with regard to the causes of variability on diurnal, seasonal, and interannual timescales that underlie these estimates. Collocated airborne and tower-based measurements of these gases for selected months in the period 2003-2011 will be analyzed using a receptor-oriented Lagrangian particle dispersion model driven by a version of the Weather Research and Forecasting (WRF) model adapted to flux inversion work. The analysis will provide an assessment tool for independent bottom-up emission estimates from existing inventories. The availability of reliable transport fields and a conjoint analysis of the four gases will be critical to the success of the study.Human-induced changes in atmospheric concentrations of greenhouse gases are a major societal concern discussed in the press, in Congress, and by ordinary citizens every day. Currently there is no validation for inventory-based estimates of U.S. and North American contributions to this global problem, and there are indications that these estimates may be in error.The work will decisively improve this situation by providing new assessments based on strong physical and observational constraints. The data, results, and software will be made publicly available during the research, and the principal investigators will engage in public outreach by communicating the results that are pertinent to the public debate on climate change.
这项工作旨在建立对北美重要温室气体,包括二氧化碳(CO2)、甲烷(CH4)、一氧化二氮(N2O)和一氧化碳(CO)的地表源和汇的准确自上而下的估计,并解决个别科学问题,特别是关于这些估计所依据的日、季节和年际时间尺度上变化的原因。对2003-2011年期间选定月份的这些气体的并置气载和塔基测量将使用面向接收器的拉格朗日粒子扩散模型进行分析,该模型由适用于通量反演工作的天气研究和预报(WRF)模型的版本驱动。该分析将为根据现有清单进行独立的自下而上的排放估计提供一种评估工具。可靠的运输场的可用性和对四种气体的联合分析将是这项研究成功的关键。人为导致大气中温室气体浓度的变化是媒体、国会和普通公民每天都在讨论的一个主要社会问题。目前还没有对美国和北美对这一全球问题的贡献的基于库存的估计进行验证,而且有迹象表明这些估计可能是错误的。这项工作将通过提供基于强烈的物理和观测限制的新评估来决定性地改善这种情况。数据、结果和软件将在研究期间公之于众,主要调查人员将通过传播与气候变化公开辩论相关的结果来进行公开宣传。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Steven Wofsy其他文献
Steven Wofsy的其他文献
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{{ truncateString('Steven Wofsy', 18)}}的其他基金
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$ 21.6万 - 项目类别:
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1337512 - 财政年份:2013
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0948580 - 财政年份:2009
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$ 21.6万 - 项目类别:
Standard Grant
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0723327 - 财政年份:2007
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- 批准号:
0320909 - 财政年份:2003
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$ 21.6万 - 项目类别:
Standard Grant
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- 批准号:
0221850 - 财政年份:2003
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$ 21.6万 - 项目类别:
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