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The impact of urbanization on current and future coastal precipitation: a case study for Houston


  • J Marshall Shepherd
  • Michael Carter
  • Michael Manyin
  • Dmitry Messen
  • Steve Burian


The approach of this study was to determine, theoretically, what impact current and future urban land use in the coastal city of Houston, Texas has on the space and time evolution of precipitation on a ‘typical’ summer day. Regional model simulations of a case study for 25 July 2001 were applied to investigate possible effects of urban land cover on precipitation development. Simulations in which Houston urban land cover was included resolved rain cells associated with the sea breeze front and a possible urban circulation on the northwest fringe of the city. Simulations without urban land cover did not capture the initiation and full intensity of the ‘hypothesized’ urban-induced rain cell. The response is given the terminology the ‘urban rainfall effect’ or URE. An urban growth model (UrbanSim) was used to project the urban land-cover growth of Houston, Texas from 1992 to 2025. A regional atmospheric-land surface model was then run with the 2025 urban land-cover scenario. Though we used a somewhat theoretical treatment, our results show the sensitivity of the atmosphere to urban land cover and illustrate how atmosphere – land interactions can affect cloud and precipitation processes. Two urban-induced features, convergence zones along the inner fringe of the city and an urban low-pressure perturbation, appear to be important factors that lead to enhanced rain clouds independently or in conjunction with the sea breeze. Simulations without the city (NOURBAN) produced less cumulative rainfall in the west-northwest Houston area than simulations with the city represented (URBAN). Future urban land-cover growth projected by UrbanSim (URBAN2025) led to a more expansive area of rainfall, owing to the extended urban boundary and increased secondary outflow activity. This suggests that the future urban land cover might lead to temporal and spatial precipitation variability in coastal urban microclimates. It was beyond the scope of the analysis to conduct an extensive sensitivity analysis of cause – effect relationships, though the experiments provide some clues as to why the rainfall evolution differs. This research demonstrates a novel application of urban planning and weather – climate models. It also raises viable questions concerning future planning strategies in urban environments in consideration of hydroclimate changes.

Suggested Citation

  • J Marshall Shepherd & Michael Carter & Michael Manyin & Dmitry Messen & Steve Burian, 2010. "The impact of urbanization on current and future coastal precipitation: a case study for Houston," Environment and Planning B: Planning and Design, Pion Ltd, London, vol. 37(2), pages 284-304, March.
  • Handle: RePEc:pio:envirb:v:37:y:2010:i:2:p:284-304

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    Cited by:

    1. Hiroyuki Kusaka & Asuka Suzuki-Parker & Toshinori Aoyagi & Sachiho A. Adachi & Yoshiki Yamagata, 2016. "Assessment of RCM and urban scenarios uncertainties in the climate projections for August in the 2050s in Tokyo," Climatic Change, Springer, vol. 137(3), pages 427-438, August.
    2. Ming, Tingzhen & de_Richter, Renaud & Liu, Wei & Caillol, Sylvain, 2014. "Fighting global warming by climate engineering: Is the Earth radiation management and the solar radiation management any option for fighting climate change?," Renewable and Sustainable Energy Reviews, Elsevier, vol. 31(C), pages 792-834.

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