Main Title |
An objective analysis technique for the regional air pollution study / |
Author |
Hovland, D. ;
Dartt, D. ;
Gage., K.
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Other Authors |
|
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 |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA-600/4-77-002 |
|
Headquarters Library/Washington,DC |
02/10/2006 |
EJBD |
EPA 600-4-77-002a |
|
Headquarters Library/Washington,DC |
03/26/2014 |
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 ARCHIVE |
EPA 600-4-77-002a |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ELBD RPS |
EPA 600-4-77-002a |
v.1, repository |
AWBERC Library/Cincinnati,OH |
02/20/2018 |
ELBD ARCHIVE |
EPA 600-4-77-002b |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
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 |
Abstract |
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. |
Notes |
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." |