Coupled Aerosol and Climate Models: An Intercomparison of the GFDL Model and the NCAR Model

气溶胶和气候耦合模型：GFDL 模型和 NCAR 模型的比较

• 批准号: 0946739
• 负责人: Joyce Penner
• 金额: $ 60万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-08-01 至 2015-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0946739&HistoricalAwards=false
• 关键词: Coupled; Aerosol; Climate; Models; Intercomparison

This project aims to examine the relationships between aerosol changes, cloud changes and climate change using the Integrated Massively Parallel Atmospheric Chemical Transport (IMPACT) aerosol model coupled to two different climate models and to evaluate the adequacy of the aerosol treatment and cloud treatments within the two versions of the coupled IMPACT/climate models. Specifically, the investigators will (i) couple the aerosol model to the Geophysical Fluid Dynamics Laboratory (GFDL) atmospheric general circulation model (AGCM) and the National Center for Atmospheric Research (NCAR) Community Atmosphere Model (CAM) models that will be used in the Intergovernmental Panel on Climate Change 5th assessment report (AR5) simulations, (ii) compare how different parameterizations in the models as well as basic model dynamics help determine the cloud fields, aerosol fields, and direct and indirect forcing by aerosols, and (iii) study the relative changes to clouds from changes in climate and from aerosols. This project will help to determine which climate model transport, chemical transformation, and removal for aerosols is best able to reproduce satellite data for aerosol optical depth, ratio of extinction as a function of wavelength, backscattering profiles, and the effective radius of aerosols. It may also help to reduce the range of sensitivity of climate models to increases in greenhouse gases. Broader impacts of this project concern both its policy implications and the training of scientific personnel. The issues being addressed are of prime importance in the determination of climate change and its prediction. The use of models that are being submitted to the next IPCC AR5 report will help the understanding and comparison two primary U.S. models used in that policy-relevant report. In addition, a graduate student as well as a post-doctoral will be trained and results from this project are routinely used to update the Precipitation and Clouds course taught by one of the investigators.

该项目的目的是使用综合平行的大气化学转运（撞击）气溶胶模型与两种不同的气候模型相结合，并评估气溶胶处理和云处理中的两个版本中的两个版本的辅助冲击/气候模型的适当性。具体而言，研究人员将（i）将气溶胶模型与地球物理流体动力学实验室（GFDL）大气通用循环模型（AGCM）和国家大气研究中心（NCAR）社区大气研究中心（CAM）模型（CAM）模型（cAM）模型（将在气候变化之间进行的模型（AR5）的模型（AR5）以及不同的模型（AR5）的模型（AR5）使用，该模型（AR 5）确定气溶胶的云场，气溶胶场以及直接和间接强迫，（iii）研究气候变化和气溶胶的相对变化。 该项目将有助于确定哪种气候模型传输，化学转化和气溶胶的去除最能够繁殖卫星数据，以实现气溶胶光学深度，灭绝的比率，随波长的函数，反向散射轮廓和有效的气溶胶半径。它还可能有助于降低气候模型对增强气体增加的敏感性范围。该项目的更广泛影响涉及其政策含义和科学人员的培训。所解决的问题对于确定气候变化及其预测至关重要。提交给下一个IPCC AR5报告的模型的使用将有助于理解和比较该政策与政策相关的报告中使用的两个主要模型。此外，将培训研究生以及博士后的培训，该项目的结果通常用于更新一名研究人员教授的降水和云课程。