%0 Journal Article %T Geothermal, Oceanic, Wildfire, Meteorological and Anthropogenic Impacts on PM<sub>2.5</sub> Concentrations in the Fairbanks Metropolitan Area %A Nicole M？lders %A Gilberto Javier Fochesatto %A Stanley Gene Edwin %A Gerhard Kramm %J Open Journal of Air Pollution %P 19-68 %@ 2169-2661 %D 2019 %I Scientific Research Publishing %R 10.4236/ojap.2019.82002 %X The impacts of low and high-frequency variability from teleconnections between large scale atmospheric processes and local weather as well as emissions changes on concentrations of particulate matter of 2.5 μm or less in diameter ([PM_2.5]) were examined for the Fairbanks Metropolitan Area (FMA). October to March and May to August mean [PM_2.5] were 1.8 and 3.1 μg·m^-3 higher for positive than negative annual mean Pacific Decadal Oscillation. Annual mean [PM_2.5] were 3.8 μg·m^-3 lower for positive than negative Southern Oscillation Index. On 1999-2018 average, [PM_2.5] decreased 2.9 μg·m^-3·decade^-1. On average over October to March, decadal and inter-annual variability caused higher or similar differences in mean observed [PM_2.5] and its species than emission-control measures. The 2006 implementation of Tier 2 for new vehicles decreased observed sulfate concentrations the strongest (~4.95 μg·m^-3