Monday, 12 January 2009: 1:30 PM
The role of ship emissions for atmospheric composition and input in South Alaska National Parks
Room 127A (Phoenix Convention Center)
In the Gulf of Alaska, every summer season experiences an influx of shipping traffic due to increased tourism, trade, commerce, etc. With emissions comparable to both aviation and road traffic, shipping emissions are still, for the most part, unregulated allowing for substantial amounts of pollutants to be released along major shipping routes. In the photochemically active summer season of Alaska, these pollutants can be transformed and transported over great distances putting even remote coastal landscapes at risk for contamination in terms of air quality and atmospheric deposition. In order to investigate the impact of ship emissions, the fully coupled meteorology and chemistry model, WRFChem, will be used to examine chemical processes such as transport, transformation, and deposition and how they are affected by meteorological factors. Model simulations for a typical summer tourist season will be presented without and with the inclusion of ship emissions for comparison in order to identify the impact on the coastal landscapes of Alaska.