Megameter-scale atmospheric transport and dispersion: First annual progress report

Technical Report · Fri Jun 01 00:00:00 EDT 1984

OSTI ID:5480351

Baer, F; Holland, J Z

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
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
MONITORING
DIFFUSION
MATHEMATICAL MODELS
LONG-RANGE TRANSPORT
ATMOSPHERIC CIRCULATION
CANADA
FEDERAL REGION I
FIELD TESTS
METEOROLOGY
ORGANIC COMPOUNDS
PROGRESS REPORT
TRACER TECHNIQUES
DOCUMENT TYPES
ENVIRONMENTAL TRANSPORT
ISOTOPE APPLICATIONS
MASS TRANSFER
NORTH AMERICA
POLLUTION
TESTING
USA
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)