This study is a part of the Alaskan Pollution and Chemical Analysis (ALPACA) project which, seeks to close knowledge gaps in understanding of atmospheric chemical mechanisms occurring under cold and dark conditions. These gaps are exacerbated by lack of knowledge of emissions and by wintertime meteorology, which causes stagnation and hinders mixing between cleaner background and polluted air masses. In addition, there are limited measurements in regions with sub-freezing temperatures and low to absent photochemistry.    

For more information about ALPACA click here.