Record Display for the EPA National Library Catalog

RECORD NUMBER: 9 OF 22

OLS Field Name OLS Field Data
Main Title Investigation of the Effects of Urbanization on Precipitation Type, Frequency, Areal and Temporal Distribution.
Author Shulma, Mark D. ; Greenwa, A. Roger ;
CORP Author Rutgers - The State Univ., New Brunswick, N.J. Water Resources Research Inst.
Year Published 1971
Report Number DI-14-31-0001-3530; OWRR-A-026-N.J.; 01982,; A-026-N.J.(1)
Stock Number PB-204 866
Additional Subjects ( Precipitation(Meteorology) ; Seasonal variations) ; ( Climatology ; Urban areas) ; ( Urban areas ; Weather modification) ; Thunderstorms ; Wind velocity ; Cloud physics ; Air pollution ; New York ; New Jersey ; Connecticut ; Analysis of variance ; New York City(New York)
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-204 866 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 90p
Abstract
An investigation into the effects of urbanization on precipitation for the northern New Jersey-New York Metropolitan area was undertaken. Analyses were performed on monthly precipitation data for a network of 20 urban and rural stations in New Jersey, New York and Connecticut from 1900 to 1970. Individual storm totals stratified according to wind direction at the surface and 850 mb were analyzed for a network of 91 stations from 1951 through 1969. Results indicate that precipitation variability and total amounts were greater in surrounding areas than in the central urban complex and that these differences are due primarily to summer precipitation. It was found that during periods of drought, precipitation differences between urban and rural areas are minimized while homogeneity increases. In addition, homogeneity of precipitation variability was a function of distance from New York City. During the period of study 14 out of 20 stations tested for trends showed decreasing annual precipitation totals with time. Analysis of variance indicates a tendency for increased precipitation downwind of the center city with northeast and southwest winds both at the surface and aloft, while with northeast surface winds and southwest or southeast winds aloft a more complicated pattern occurs. (Author)