A Long-Term Decrease in Arctic Haze at Barrow, Alaska Export

@article{bodhaineGRL1993, abstract = {Surface aerosol scattering measurements have been conducted at Barrow, Alaska, from May 1976 to the present using a four-wavelength nephelometer. Total column aerosol optical depth measurements have been obtained over the same time period. Both data sets show a maximum in 1982 and then a decreasing trend to the present. This decreasing trend is apparent, and statistically significant, only in March-April. Arctic haze, caused by long-range transport from midlatitude industrial regions, is most evident in the vicinity of Barrow during this time of year. We suggest that the decrease in Arctic haze at Barrow, as observed in the aerosol light scattering and optical depth records, is due to decreased anthropogenic pollution emissions in Europe and the former Soviet Union, the primary source regions for the springtime aerosol at Barrow. Volcanic effects in the stratosphere have been subtracted from the optical depth data, and are not believed to be significant in the surface-based data.}, author = {Bodhaine, Barry A. and Dutton, Ellsworth G.}, citeulike-article-id = {3038824}, citeulike-linkout-0 = {http://www.agu.org/pubs/crossref/1993/93GL01146.shtml}, journal = {Geophysical Research Letters}, keywords = {aerosol, alaska}, number = {10}, pages = {947--950}, posted-at = {2008-07-24 10:43:29}, priority = {2}, title = {A Long-Term Decrease in Arctic Haze at Barrow, Alaska}, url = {http://www.agu.org/pubs/crossref/1993/93GL01146.shtml}, volume = {20} }

TY - JOUR ID - bodhaineGRL1993 L3 - citeulike-article-id:3038824 N2 - Surface aerosol scattering measurements have been conducted at Barrow, Alaska, from May 1976 to the present using a four-wavelength nephelometer. Total column aerosol optical depth measurements have been obtained over the same time period. Both data sets show a maximum in 1982 and then a decreasing trend to the present. This decreasing trend is apparent, and statistically significant, only in March-April. Arctic haze, caused by long-range transport from midlatitude industrial regions, is most evident in the vicinity of Barrow during this time of year. We suggest that the decrease in Arctic haze at Barrow, as observed in the aerosol light scattering and optical depth records, is due to decreased anthropogenic pollution emissions in Europe and the former Soviet Union, the primary source regions for the springtime aerosol at Barrow. Volcanic effects in the stratosphere have been subtracted from the optical depth data, and are not believed to be significant in the surface-based data. IS - 10 JF - Geophysical Research Letters EP - 950 TI - A Long-Term Decrease in Arctic Haze at Barrow, Alaska VL - 20 SP - 947 KW - aerosol KW - alaska AU - Bodhaine, Barry AU - Dutton, Ellsworth UR - http://www.agu.org/pubs/crossref/1993/93GL01146.shtml ER -