Impacts of the Biosphere on Global Tropospheric Chemistry and Climate

该项目的重点是改进生物圈-大气交换过程在大气化学输送模型中的表现。该项目的总体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，并改善工业化前大气成分的特征。该项目将帮助制定促进空气质量和可持续环境的健全政策。这项研究旨在评估和改进GEOS-Chem全球模式对干沉积、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暂的气候作用力：臭氧和气溶胶。GEOS-Chem模式正被用来分离陆地表面变化对化学通量和大气成分的影响。模拟结果将使用过去十年来地面现场的环境观测和空中战役进行评估。

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.