Impact of climate change on transpacific transport of dust and sulfate

We use GEOS-5 global tropospheric aerosol simulations to study the transpacific transport of dust and sulfate aerosols under current and potential future (mid-century) climate conditions. We study the relationship between output of dust and sulfate from Asia, and inflow into North America, with meteorological flow patterns / climate indices over the Northern Pacific. We consider the following questions: (1) How does outflow and transpacific transport of dust, sulfate, and its precursor gases, from East Asian source regions change from current to future climate conditions? (2) What is the potential impact of transpacific transport of dust, sulfate, and its precursor gases on aerosol loadings and surface concentrations in North America? (3) How important are direct and semi-direct aerosol-radiative feedbacks on the atmospheric dynamics that control transpacific transport of dust and sulfate, and do those feedbacks become more or less important in a future climate?