Record Display for the EPA National Library Catalog


Main Title Tracer Studies of Transport and Transformation in Cumuli.
Author Stith, J. L. ; Alkezweeny, A. J. ; Burrows, D. A. ;
CORP Author North Dakota Univ., Grand Forks. Dept. of Atmospheric Sciences.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher Aug 95
Year Published 1995
Report Number EPA-CR-816010-10-0; EPA/600/R-95/117;
Stock Number PB95-255717
Additional Subjects Cumulus clouds ; Tracer studies ; Air pollution dispersion ; Aerosols ; Ozone ; Carbon dioxide ; Trace gases ; Ecological concentration ; Environmental transport ; Transport properties ; Air pollution monitoring ; Atmospheric diffusion ; Turbulence ; Wind(Meteorology) ; Cloud physics ;
Library Call Number Additional Info Location Last
NTIS  PB95-255717 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 75p
Airborne measurements near Champaign, Illinois and Milwaukee, Wisconsin were made during the summers of 1990 and 1992. Measurements of the aerosol size distribution, wind, turbulence, cloud microphysics and trace gas measurements were collected from 31 research flights. The main objectives was to document transport and transformation by cumuli, but data on out of cloud transformation processes were also collected. The results from the entrainment experiments suggested that, during the early stages of entrainment the tracer remained mostly out the cloud and was carried alongside the upper cloud regions by the circulation present there. Later, the tracer mixed into the main portion of the turrents and rapidly diluted. The observations are consistent with the hypothesis that entrainment occurs through a vortex-like circulation that brings air from just above the rising cloud top into the central region of the cloud.