Impacts of the Biosphere on Global Tropospheric Chemistry and Climate

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该项目通过更新三维全球模型（社区大气模型-化学与社区土地模型），解决了我们对大气中气体和气溶胶生物源的理解中的一个重要不确定性领域。排放量和加工的几个倍半萜将明确模拟和可能的新异戊二烯反应机制将被认为是在二次有机气溶胶形成的背景下。这些机制对大气的氧化能力有重要的影响，并将有助于减少大气有机气溶胶的来源、分布和组成的不确定性，更广泛的影响将包括传统的学生培训和课程开发。一名本科生将通过大气研究和科学（SOARS）计划的重要机会招募，该计划为历史上代表性不足的科学群体的学生提供了参加夏季研究活动的机会。同行评审期刊文章和会议报告的传统途径将增强科学理解。这项工作的社会效益将来自对地球系统目前如何运作的更好理解，以及对未来气候情景模拟的改进模型框架。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This project addresses a significant area of uncertainty in our understanding of biogenic sources of gases and aerosols to the atmosphere by updating a 3-dimensional global model (Community Atmospheric Model - Chemistry coupled with Community Land Model). Emissions and processing of several sesquiterpenes will be explicitly simulated and possible new isoprene reaction mechanisms will be considered in the context of secondary organic aerosol formation. These mechanisms have important ramifications for the oxidative capacity of the atmosphere and will help to reduce uncertainties about sources, distributions, and composition of atmospheric organic aerosols.Broader impacts will include traditional student training and course development. An undergraduate will be recruited via the Significant Opportunities in Atmospheric Research and Science (SOARS) program, which provides an opportunity for students of historically underrepresented groups in science to participate in summer research activities. Traditional avenues of peer-reviewed journal articles and conference presentations will enhance scientific understanding. The societal benefit of this work will derive from improved understanding of how the Earth system currently functions and from an improved model framework for simulations of future climate scenarios.