Record Display for the EPA National Library Catalog


Main Title Boundary Layer Transport of NOx and O3 from Baltimore, Maryland: A Case Study.
Author Clark, T. L. ; Clarke, J. F. ; Possiel, N. C. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1984
Report Number EPA-600/D-84-089;
Stock Number PB84-174598
Additional Subjects Nitrogen oxides ; Ozone ; Air pollution ; Boundary layer flow ; Sites ; Concentration(Composition) ; Plumes ; Urban areas ; Air pollution sampling ; Baltimore(Maryland)
Library Call Number Additional Info Location Last
NTIS  PB84-174598 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 18p
On August 14, 1980, a Lagrangian/Eulerian air pollution sampling mission was conducted near and up to 400 km downwind of Baltimore, Maryland. This mission was an integral part of the U.S. Environmental Protection Agency's Northeast Regional Oxidant Study (NEROS). The mission began with the release of a 6-cu m tetroon from a site 20 km east-northeast of downtown Baltimore at 1045 LDT. Instrumented aircraft were directed to the tetroon location at approximately 3-h intervals to measure the concentrations of NOx, O3, and other pollutants across approximately 100-km long transects of the urban plume and its environs at two to three altitudes. Measurements indicated a well-defined urban plume up to 190 km downwind of Baltimore with O3 concentrations exceeding 160 ppb. However, no definite indications of the plume were found 400 km downwind of Baltimore.