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SUMMARY:Urban Impacts on Rainfall and Storm Event Hydrologic Response 
DTSTART:20111213T161500
DTSTAMP:20260916T055654Z
UID:b724c08d42ed1a62814df0a8517af271d66897cb32ecc597d6510c5c
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr James A. Smith\, Dept of Civil & Environmental Engineering\
 , Princeton University\, USA\nWe examine urban impacts on rainfall and sto
 rm event hydrologic response through empirical and numerical modeling stud
 ies\, with the Baltimore (US) metropolitan region serving as the principal
  study area.  We present supporting analyses for the New York\, Atlanta\, 
 Charlotte and Milwaukee metropolitan regions in the US.  Empirical analyse
 s center on long (10 years)\, high-resolution (1 km horizontal resolution 
 and 15 minute time resolution) radar rainfall data sets and stream gaging 
 observations from dense urban networks. The warm season (June – August) 
 rainfall climatology for the Baltimore region exhibits sharp spatial gradi
 ents in a diverse array of statistical properties characterizing mean rain
 fall\, rainfall extremes and rainfall occurrence.  Empirical analyses and 
 numerical modeling studies using the Weather Research and Forecasting (WRF
 ) model are employed to examine the role of urban heat island\, urban cano
 py and urban aerosols in modifying the regional rainfall climatology.  In 
 addition to urbanization effects\, regional rainfall climatology for much 
 of the urban corridor of the eastern US is linked to the effects of mounta
 inous terrain and land-water boundaries.  The spectrum of storm event hydr
 ologic response is examined through empirical analyses of rainfall and dis
 charge observations from “small” urban watersheds.  For the Baltimore 
 region\, we utilize a sample of nine watersheds with drainage area of appr
 oximately 10 km2.  Profound contrasts in storm event hydrologic response a
 re linked to the distribution of impervious cover\, elaboration of the dra
 inage network through the storm drain network and the regional impacts of 
 stormwater detention ponds. 
LOCATION:GR C0 01
STATUS:CONFIRMED
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