Record Display for the EPA National Library Catalog


Main Title An objective analysis technique for the regional air pollution study /
Author Hovland, D. ; Dartt, D. ; Gage., K.
Other Authors
Author Title of a Work
Hovland, D.
Dartt, D.
Gage, K.
Eskridge, R. E.
CORP Author Control Data Corp., Minneapolis, Minn.;Environmental Sciences Research Lab., Research Triangle Park, N.C. Meteorology and Assessment Div.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Environmental Sciences Research Laboratory,
Year Published 1977
Report Number EPA-600/4-77-002a; EPA-600/4-77-002b; EPA-68-02-1827
Stock Number PB-266 255
OCLC Number 52757878
Additional Subjects Atmospheric models ; Wind(Meteorology) ; Temperature ; Meteorological data ; Air pollution ; Data analysis ; Mathematical models ; Computer programs ; Computation ; Air quality ; Saint Louis(Missouri)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA-600/4-77-002 Headquarters Library/Washington,DC 02/10/2006
EJBD ARCHIVE EPA 600-4-77-002a Headquarters Library/Washington,DC 04/02/2012
EJBD  EPA 600-4-77-002a Headquarters Library/Washington,DC 03/26/2014
EJBD ARCHIVE EPA 600-4-77-002b Headquarters Library/Washington,DC 04/02/2012
EJBD  EPA 600-4-77-002b Headquarters Library/Washington,DC 03/26/2014
EKBD  EPA-600/4-77-002a pt.1 Research Triangle Park Library/RTP, NC 05/16/2023
EKBD  EPA-600/4-77-002a,b Research Triangle Park Library/RTP, NC 08/01/2003
EKBD  EPA-600/4-77-002b pt.2 Research Triangle Park Library/RTP, NC 05/16/2023
ELBD RPS EPA 600-4-77-002a v.1, repository AWBERC Library/Cincinnati,OH 02/20/2018
ELBD RPS EPA 600-4-77-002b v.2, repository AWBERC Library/Cincinnati,OH 02/20/2018
ESAD  EPA 600-4-77-002a,b Region 10 Library/Seattle,WA 09/05/2017
NTIS  PB-266 255 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 2 volumes : illustrations ; 28 cm
This report documents the development of an objective analysis program for the mesoscale gridding of wind and temperature for the Regional Air Pollution Study being conducted in St. Louis by the Environmental Protection Agency. The program is designed to produce a 5-km spaced horizontal grid analysis from a distribution of observations which are sparse at the boundaries of the grid and dense near the center. An iterative scan procedure is used successively to correct an initial guess field until the analysis agrees reasonably well with observations. A procedure is used where widely spaced observations and a large scan radius are first used to approximate the field. This is successively followed by the addition of more observational data and reduction in scan radius until the field converges to the desired analysis (usually five iterations are required). This procedure of simultaneously adding more data and shrinking the scan radius insures that the small-scale variability in areas of dense observations does not propagate into the surrounding areas where there are few data. The special problems of producing three-dimensional fields of gridded data from the observation network are discussed. They include the inconsistency of the surface and upper air observation networks, the non-uniform density of the basic observing network, and the difficulty of producing a reliable analysis when data from one or more key stations are missing.
Project Officer: R.E. Eskridge. Control Data Corporation Contract Number: 68-02-1827 "January 1977." "EPA-600/4-77-002a." "EPA-600/4-77-002b."