Impacts of the Biosphere on Global Tropospheric Chemistry and Climate

生物圈对全球对流层化学和气候的影响

• 批准号: 1564495
• 负责人: Colette Heald
• 金额: $ 49.92万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1564495&HistoricalAwards=false
• 关键词: Impacts; Biosphere; Global; Tropospheric; Chemistry

This project is focused on improving the representation of biosphere-atmosphere exchange processes in atmospheric chemical transport models. The overall objectives of the project are to investigate the impact of future land-use change on surface-atmosphere exchange processes, and to improve the characterization of the pre-industrial atmospheric composition. The project will aid in the development of sound policies for promoting air quality and a sustainable environment.This research is directed toward evaluating and improving GEOS-Chem global model simulations of dry deposition, organic aerosol aging, and bioaerosols. The focus of this work is on short-lived climate forcers: ozone and aerosols. The GEOS-Chem model is being used to isolate the impact of land surface modifications on chemical fluxes and atmospheric composition. Modeling results will be evaluated using ambient field observations from surface sites and airborne campaigns over the last decade.

本项目的重点是改进大气化学输送模型中生物圈-大气交换过程的表征。该项目的总目标是调查未来土地利用变化对地表-大气交换过程的影响，并改进工业化前大气组成的特征。该项目将有助于制定促进空气质量和可持续环境的健全政策。本研究旨在评估和改进GEOS-Chem全球模型对干沉降、有机气溶胶老化和生物气溶胶的模拟。这项工作的重点是短期的气候力量：臭氧和气溶胶。目前正在使用GEOS-Chem模式分离地表变化对化学通量和大气成分的影响。建模结果将利用过去十年来地面站点和空中活动的环境现场观测进行评估。