Local Climate Sensitivity of the Three Gorges Dam

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Two simulations, control and land use change, were performed for an eight week period (2 April-16 May 1990) to determine the net sensitivity of the local climate around the Three Gorges Dam. The analysis indicates that the large reservoir acts as a potential evaporating surface that decreases the surface temperature, cools the lower atmosphere, decreasing upward motion, and increasing sinking air mass. Such sinking results in low level moisture divergence, decreasing cloudiness, and increasing net downward radiation, which increases the surface temperature. However, results indicate that evaporative cooling dominates radiative warming in this initial study. The strong evaporation also supplies ... continued below

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Miller, Norman L.; Jin, Jiming & Tsang, Chin-Fu February 18, 2005.

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Two simulations, control and land use change, were performed for an eight week period (2 April-16 May 1990) to determine the net sensitivity of the local climate around the Three Gorges Dam. The analysis indicates that the large reservoir acts as a potential evaporating surface that decreases the surface temperature, cools the lower atmosphere, decreasing upward motion, and increasing sinking air mass. Such sinking results in low level moisture divergence, decreasing cloudiness, and increasing net downward radiation, which increases the surface temperature. However, results indicate that evaporative cooling dominates radiative warming in this initial study. The strong evaporation also supplies moisture to the atmosphere, suggesting an increase in precipitation, but the sinking moist air diverges away from the TGD region with no net change in precipitation. This numerical study represents an initial methodology for quantification of the impact of the Three Gorges Dam on the local climate and a more comprehensive, fine-scale set of multi-season simulations with additional observational data is needed for a more complete analysis.

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OSTI as DE00840454

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  • Journal Name: Bulletin of the American Meteorological Society; Journal Volume: 86; Journal Issue: 3; Other Information: Submitted to the Bulletin of the American Meteorological Society: Volume 86, No.3; Journal Publication Date: 03/2005

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  • Report No.: LBNL--57135
  • Grant Number: AC03-76SF00098
  • DOI: 10.1175/BAMS-86-3-359 | External Link
  • Office of Scientific & Technical Information Report Number: 840454
  • Archival Resource Key: ark:/67531/metadc782853

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • February 18, 2005

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  • Dec. 3, 2015, 9:30 a.m.

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  • May 5, 2016, 2:05 p.m.

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Miller, Norman L.; Jin, Jiming & Tsang, Chin-Fu. Local Climate Sensitivity of the Three Gorges Dam, article, February 18, 2005; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc782853/: accessed November 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.