A long-term decrease in arctic haze at Barrow, Alaska
The authors report on a statistically significant long-term decrease in surface based optical depth and aerosol scattering extinction coefficients for arctic haze measurements in the vicinity of Barrow, Alaska. An atmospheric monitoring station near Pt Barrow has been operated since 1972 as part of NOAA. This station has monitored the arctic haze, and aerosol pollutants over this time period. Extensive study campaigns have shown that this haze is the result of air pollution resulting from mid latitudes, particularly Eurasia, and to some extent north America. Recent analysis has shown that since 1982 during the period of March and April, when long-range transport is most evident, that there has been a significant decrease in atmospheric aerosol content at Barrow. Previous work from Alert on Ellesmere Island lends support for this observation.
- OSTI ID:
- 6185196
- Journal Information:
- Geophysical Research Letters (American Geophysical Union); (United States), Journal Name: Geophysical Research Letters (American Geophysical Union); (United States) Vol. 20:10; ISSN GPRLAJ; ISSN 0094-8276
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AEROSOLS
AIR POLLUTION
ARCTIC HAZE
COLLOIDS
DIAGRAMS
DISPERSIONS
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL TRANSPORT
LONG-RANGE TRANSPORT
MASS TRANSFER
MONITORING
NORTH AMERICA
OPTICAL DEPTH CURVE
POLLUTION
SCATTERING
SOLS