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An Eulerian hemispheric model is used to investigate emission source contributions to the Arctic air pollution such as the Arctic haze and black carbon (BC) accumulation. Four cities, including Tiksi (71° 38' N, 128° 52' E), Barrow (71° 18' N, 156° 44' W), Alert (82° 28' N, 62° 30' W), and Spitsbergen (77° 55' N, 11° 56' E), are selected to evaluate the estimations. The results indicate that more than half of the wintertime sulfur deposition comes from emission sources in north America, and the contributions donot differ greatly with those in summer. The results from the calculations for BC suggests that three majoremission sources, namely open burning, biofuel, and fossil fuel, equally contribute to BC levels in thearctic cities.

A Modeling study to estimate emission source contributions to the Arctic air pollution