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

• 批准号: 0830916
• 负责人: Steven Wofsy
• 金额: $ 21.6万
• 依托单位: Harvard University
• 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: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0830916&HistoricalAwards=false
• 关键词: Collaborative; Research; Improving; Estimated; Fluxes

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.

这项工作旨在确定重要温室气体的表面源和水槽的准确自上而下的估计，包括二氧化碳（CO2），甲烷（CH4），一氧化二氮（N2O）和北美上的碳一氧化碳（CO），以及解决了个人科学问题，特别是关于这些估计估计的昼夜，季节性和年际时间表的变异性原因。 在2003 - 2011年期间，将使用面向受体的拉格朗日粒子分散模型分析这些气体对这些气体的共存在和基于塔的测量值。 该分析将为现有库存的独立自下而上排放估算提供评估工具。 可靠的运输场的可用性和对这四种气体的联合分析对于研究的成功至关重要。人类引起的大气浓度的温室气体的变化是媒体，国会和普通的普通社会中讨论的主要社会关注点。公民每天。 目前尚无验证基于库存的美国和北美对这一全球问题的贡献的估计，并且有迹象表明这些估计可能是错误的。这项工作将通过基于强大的身体和观察性提供新的评估来决定性地改善这种情况约束。 在研究期间将公开提供数据，结果和软件，主要研究人员将通过传达与关于气候变化的公开辩论的结果，参与公共宣传。