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.

该项目的重点是改善大气化学转运模型中生物圈 - 大气交换过程的表示。该项目的总体目标是研究未来土地利用变化对地表 - 大气交换过程的影响，并改善工业前大气组成的表征。该项目将有助于制定促进空气质量和可持续环境的合理政策。这项研究旨在评估和改进干燥沉积，有机气溶胶老化和生物溶质的GEOS-CHEM全球模型模拟。 这项工作的重点在于短暂的气候燃料：臭氧和气溶胶。 GEOS-CHEM模型用于隔离土地表面修饰对化学通量和大气组成的影响。 在过去十年中，将使用来自地面位点和空降活动的环境场观测来评估建模结果。