Megameter-scale atmospheric transport and dispersion: First annual progress report
The Cross-Appalachian Tracer Experiment (CAPTEX), non-reactive, non-depositing perfluorocarbon tracers, measurable in parts per 10/sup 15/ parts of air, are released upwind of an extensive surface-based sampling network over northeastern US and southeastern Canada, with additional sampling by aircraft. Thus isolating the transport and dispersion phase of the problem, with a relatively modest number of tracer releases of a few hours duration under a limited range of meteorological conditions, the CAPTEX series attempts to demonstrate a technique for carrying out more definitive experiments, hence more rigorous tests of models, than have ever been done before. We will determine from sample data obtained in the field experiments appropriate attributes of the tracer distribution which can be directly compared with those predicted by the models. We will distill from these comparisons quantitative measures of the credibility of the models and differentiate among the various hypotheses embodied in them in terms of their predictive value. CAPTEX-83 was successfully carried out in September and October, 1983, with five tracer releases in Ohio and two at Sudbury, Ontario. Samples were collected over a 36-hour period after each release by some 87 surface sampling stations and seven aircraft. 1 fig.
- Research Organization:
- Maryland Univ., College Park (USA). Dept. of Meteorology
- DOE Contract Number:
- AS05-83ER60149
- OSTI ID:
- 5480351
- Report Number(s):
- SR-84-25; ON: DE88004428
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
ATMOSPHERIC CIRCULATION
CANADA
DIFFUSION
DOCUMENT TYPES
ENVIRONMENTAL TRANSPORT
FEDERAL REGION I
FIELD TESTS
ISOTOPE APPLICATIONS
LONG-RANGE TRANSPORT
MASS TRANSFER
MATHEMATICAL MODELS
METEOROLOGY
MONITORING
NORTH AMERICA
ORGANIC COMPOUNDS
POLLUTION
PROGRESS REPORT
TESTING
TRACER TECHNIQUES
USA