Collaborative Research: Exploring the Chemical Reach of the Madden-Julian Oscillation: Satellite/In-Situ Data Analysis and Chemistry/Transport Modeling

合作研究：探索马登-朱利安振荡的化学范围：卫星/原位数据分析和化学/输运建模

• 批准号: 0840787
• 负责人: Yuk Yung
• 金额: $ 2.7万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-01 至 2012-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0840787&HistoricalAwards=false
• 关键词: Collaborative; Research; Exploring; Chemical; Reach

The Madden-Julian Oscillation (MJO) is the dominant form of atmospheric intraseasonal variability in the climate system. It interacts with and influences a wide range of physical weather and climate phenomena (e.g., monsoon onsets and breaks, El Niño-Southern Oscillation, and hurricanes). However, the impacts of the MJO on the chemical component of the climate system are not understood nor even well documented. This project studies the MJO's impacts on atmospheric ozone and aerosols, two important atmospheric constituents. First, the investigators will utilize a rich set of atmospheric ozone and aerosol data from a number of satellite sensors and in-situ observations to characterize the spatial and temporal patterns of intraseasonal variability of atmospheric ozone and aerosols as well as the dynamical and hydrological (e.g., rainfall, winds, and water vapor) patterns associated with these variations. Second, they will compare the intraseasonal variations of atmospheric ozone and aerosols between satellite/in-situ observations and chemistry/transport model (CTM) (e.g., Community Atmosphere Model with chemistry) simulations in order to quantify the fidelity of the CTM's representation of intraseasonal variability of atmospheric ozone and aerosols. Where possible, they will use the model and observations together to more fully understand the dynamical and chemical processes behind the intraseasonal variations of atmospheric ozone and aerosols. This project will lead to better documentation and understanding of the intraseasonal variations of atmospheric ozone and aerosols and their connection to the MJO in both observations and models. It will contribute to a graduate student training at Cornell, a summer undergraduate training at Caltech and multidisciplinary interactions among various academic and laboratory institutions, including UCLA, Caltech, Cornell, Jet Propulsion Lab and Goddard Space Flight Center.This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).

马登-朱利安涛动(MJO)是气候系统中大气季节内变化的主要形式。它与各种物理天气和气候现象(例如季风开始和中断、厄尔尼诺-南方涛动和飓风)相互作用，并对其产生影响。然而，MJO对气候系统化学成分的影响还没有被了解，甚至没有很好的记录。该项目研究MJO对大气臭氧和气溶胶这两种重要大气成分的影响。首先，研究人员将利用来自一些卫星传感器和现场观测的一组丰富的大气臭氧和气溶胶数据，来描述大气臭氧和气溶胶季节内变化的时空模式，以及与这些变化相关的动力和水文模式(例如，降雨、风和水汽)。第二，他们将比较卫星/现场观测和化学/传输模式(例如，带有化学的社区大气模式)模拟的大气臭氧和气溶胶的季节内变化，以量化社区大气模式代表大气臭氧和气溶胶季节内变化的逼真度。在可能的情况下，他们将把模式和观测结合起来，以便更充分地了解大气臭氧和气溶胶季节内变化背后的动力和化学过程。该项目将有助于更好地记录和了解大气臭氧和气溶胶的季节内变化及其在观测和模式中与MJO的联系。该奖项将用于康奈尔大学的研究生培训、加州理工学院的夏季本科生培训以及各学术和实验室机构之间的多学科互动，这些机构包括加州大学洛杉矶分校、加州理工大学、康奈尔大学、喷气推进实验室和戈达德太空飞行中心。