Regional analysis of S emission-deposition trends in North America from 1979 through 1988
Variations in SO{sub x} emissions weighted by a regional deposition model are shown to account for most of the variance in regionally averaged annual wet deposition (WD) and precipitation-weighted concentrations (PWCs) of sulfate in the United States and Canada during the period 1979--1988. Total emissions decreased about 15% during that time. For all sites combined, weighted emissions accounted for about two-thirds of the variance, with slightly better performance for PWC than for WD. Restricting the emission regions to the states containing the monitoring sites in each region led to very mixed results, with good explanation of WD and PWC variance in the Midwest and in all sites combined but generally poor explanation elsewhere, particularly for WD. In some regions, local emission densities are quite low, and most deposition would be expected to result from outside sources, so no strong relationship between local emission rates and deposition would be expected. Including annual meteorological variability in the emission weighting improved variance explanation in several of the peripheral regions, but reduced variance explanation elsewhere, particularly in the Midwest, the region of the highest emission density. 10 refs., 2 figs., 1 tab.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5194136
- Report Number(s):
- ANL/CP-73968; CONF-9109258-1; ON: DE91018545
- Resource Relation:
- Conference: 19. information transfer meeting (ITM) on air pollution modelling and its application, Crete (Greece), 29 Sep - 4 Oct 1991
- Country of Publication:
- United States
- Language:
- English
Similar Records
Analysis of recent sulfur wet deposition and SO/sub 2/ emissions trends in Eastern North America
Atmospheric wet deposition of mercury in North America
Related Subjects
58 GEOSCIENCES
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
DEPOSITION
ANNUAL VARIATIONS
REGIONAL ANALYSIS
EMISSION
METEOROLOGY
SULFUR OXIDES
ATMOSPHERIC PRECIPITATIONS
CLIMATE MODELS
CLIMATES
GREENHOUSE EFFECT
GREENHOUSE GASES
CHALCOGENIDES
CLIMATIC CHANGE
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
SULFUR COMPOUNDS
VARIATIONS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
580000 - Geosciences
990200 - Mathematics & Computers