Investigation of Trends in Aerosol Direct Radiative Effects over North America Using a Coupled Meteorology-Chemistry Model
A comprehensive investigation of the processes regulating tropospheric aerosol distributions, their optical properties, and their radiative effects in conjunction with verification of their simulated radiative effects for past conditions relative to measurements is needed in order to build confidence in their estimates of the projected impacts on future climate. This study aims at addressing this issue through a systematic investigation of changes in anthropogenic emissions of SO2 and NOx over the past two decades in the United States, the consequent changes in anthropogenic aerosol loading in the North American troposphere, and subsequent impact on regional radiation budgets.
KeywordsAerosol Optical Depth Anthropogenic Aerosol Surface Solar Radiation Tropospheric Aerosol Surface Shortwave Radiation
This work was supported in part through an inter-Agency agreement between the U.S. Environmental Protection Agency and Department of Energy. Although this work has been reviewed and approved for publication by the U.S. EPA, it does not reflect the views and policies of the agency.
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