Climate Dynamics

, Volume 47, Issue 1, pp 345–357

Impacts of urbanization on future climate in China

Article

DOI: 10.1007/s00382-015-2840-6

Cite this article as:
Chen, L. & Frauenfeld, O.W. Clim Dyn (2016) 47: 345. doi:10.1007/s00382-015-2840-6

Abstract

Urbanization plays an important role in human-induced climate change at the regional scale through altered land-atmosphere interactions over urban areas. In this study, the impacts of future urbanization in China on climate are investigated. The Weather Research and Forecasting model is used to downscale future projections using Representative Concentration Pathways (RCP) 4.5 simulations from the Community Earth System Model. Results for 2050 show decreased latent and increased sensible heat fluxes over the urban area, therefore leading to higher surface temperatures and less humidity. Future climate projections reveal that urbanization produces strong warming effects, up to 1.9 °C at regional and local/urban scales, which is comparable to the magnitude of greenhouse gas forcing under the RCP 4.5 scenario. Greater urban warming effects are projected during night and summer, which can be attributed to the high heat capacity of built-up areas. The impacts of urbanization on precipitation show varying effects primarily in summer—both increases and decreases depending on spatial scale—related to both local moisture deficits and large-scale circulation changes. Urbanization could strengthen the East Asian summer monsoon in southern China in summer, and slightly weaken it in eastern China in winter. Due to these significant impacts, we suggest that urbanization should be included in model projections to provide a more realistic and complete depiction of future climate.

Keywords

Urbanization Future climate WRF China 

Supplementary material

382_2015_2840_MOESM1_ESM.docx (346 kb)
Supplementary material 1 (DOCX 345 kb)

Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Department of GeographyTexas A&M UniversityCollege StationUSA
  2. 2.Center for Ocean-Land-Atmosphere StudiesGeorge Mason UniversityFairfaxUSA

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