کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6342624 | 1620421 | 2012 | 11 صفحه PDF | دانلود رایگان |

The Alaska-adapted WRF/Chem was used to examine the benefits of the proposed North American Emission Control Area (ECA) for air quality along the Alaska coasts. Simulations were performed alternatively assuming the emissions of 2000, and the emissions of 2000 reduced by the proposed ECA-reductions. In response to the emission reductions, reductions in sulfur (nitrogen) compounds reached up to 9Â km (2Â km) height. Reductions of sulfate- and nitrate-in-clouds were highest at the top of the atmospheric boundary layer. The strongest reductions occurred over the ECA and the international sea-lanes for sulfur- and nitrogen-compounds, respectively. Along the Gulf of Alaska, sulfur- and nitrogen-compound concentrations decreased significantly in response to the reduced ship-emissions. They decreased over Alaska despite of unchanged emissions in Alaska. PM2.5-speciation only marginally changed in response to the reduced ship-emissions.
⺠ECA-related SO2- and NOx-ship-emission reductions improve air quality in Alaska. ⺠The PM2.5-speciation marginally changes in response to the reduced ship-emissions. ⺠Air quality in the Gulf of Alaska improves significantly due to ECA reduced ship-emission.
Journal: Atmospheric Environment - Volume 50, April 2012, Pages 192-202