Acid Deposition: Atmospheric Processes in Eastern North America. A Review of Current Scientific Understanding.Committee on Atmospheric Transport & Chemical Transformation in Acid Precipitation, Environmental Studies Board, Commission on Physical Sciences, Mathematics, & Resources, National Research Council

1984 ◽  
Vol 59 (2) ◽  
pp. 196-196
Author(s):  
Michael Oppenheimer
Keyword(s):  
North America ◽  
Chemical Transformation ◽  
Acid Deposition ◽  
Research Council ◽  
Atmospheric Transport ◽  
National Research Council ◽  
Acid Precipitation ◽  
Eastern North America ◽  
Physical Sciences ◽  
Atmospheric Processes

Acid Deposition—Atmospheric Processes in Eastern North America

1984 ◽  
Vol 13 (2) ◽  
pp. 331-332
Author(s):  
M. A. Tabatabai
Keyword(s):  
North America ◽  
Acid Deposition ◽  
Eastern North America ◽  
Atmospheric Processes

Acid Deposition: Atmospheric Processes in Eastern North America

1984 ◽  
Vol 3 (3) ◽  
pp. 481
Author(s):  
M. Granger Morgan
Keyword(s):  
North America ◽  
Acid Deposition ◽  
Eastern North America ◽  
Atmospheric Processes

The history and character of acid precipitation in eastern North America

1976 ◽  
Vol 6 (2-4) ◽  
pp. 407-413 ◽  
Author(s):  
Charles V. Cogbill
Keyword(s):  
North America ◽  
Acid Precipitation ◽  
Eastern North America

Aggregation of Selected Three-Day Periods to Estimate Annual and Seasonal Wet Deposition Totals for Sulfate, Nitrate, and Acidity. Part I: A Synoptic and Chemical Climatology for Eastern North America

1995 ◽  
Vol 34 (2) ◽  
pp. 297-325 ◽  
Author(s):  
Jeffrey R. Brook ◽  
Perry J. Samson ◽  
Sanford Sillman
Keyword(s):  
North America ◽  
Wet Deposition ◽  
Atmospheric Transport ◽  
Precipitation Amount ◽  
Statistical Correlation ◽  
Eastern North America ◽  
Time Of Year ◽  
Transport Patterns

Abstract Running 3-day periods from 1979 to 1985 were categorised into one of 20 meteorological categories. These categories were developed through the cluster analysis of 3-day progressions of 85-kPa wind flow over eastern North America. The purpose for developing the categories was to identify recurring atmospheric transport patterns that were associated with differing amounts of wet sulfate (SO2−4) and nitrate (NO−3) deposition at a variety of locations in eastern North America. Identification of these patterns was necessary to facilitate the selection of time periods for simulation by the Regional Acid Deposition Model and in the development of a method for estimating long-term acidic deposition over eastern North America from a limited number of model runs. The effectiveness of this method (referred to as the aggregation method) was expected to be dependent on the ability of the categories to separate structure in wet deposition patterns. This paper describes the determination of the 20 meteorological categories and demonstrates that there were differences in their meteorological and chemical behavior and in their frequency of occurrence. Observations of precipitation and wet SO2−4 and NO−3 deposition from 22 sites in eastern North America and multiple regression models were used to demonstrate that there were statistically significant differences in deposition among categories and that knowledge of meteorological category explained some of the variation in wet deposition. The best statistical correlation, which was based upon precipitation amount, time of year, and meteorological category, explained 35%–83% (28%– 76%) of the observed variation in wet SO2−4 (NO−3) deposition depending on location. On average, across all sites and for both SO2−4 and NO−3, knowledge of category accounted for about 4% of the variation. The minimum amount explained by category was 1% and the maximum was 13%.

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