Journal article

Observations of the effects of atmospheric stability on turbulence statistics deep within an urban street canyon

P Ramamurthy, ER Pardyjak, JC Klewicki

JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY | AMER METEOROLOGICAL SOC | Published : 2007

Abstract

Data obtained in downtown Oklahoma City, Oklahoma, during the Joint Urban 2003 atmospheric dispersion study have been analyzed to investigate the effects of upstream atmospheric stability on turbulence statistics in an urban core. The data presented include turbulent heat and momentum fluxes at various vertical and horizontal locations in the lower 30% of the street canyon. These data have been segregated into three broad stability classification regimes: stable (z/L > 0.2), neutral (-0.2 < z/L < 0.2), and unstable (z/L < -0.2) based on upstream measurements of the Monin-Obukhov length scale L. Most of the momentum-related turbulence statistics were insensitive to upstream atmospheric stabil..

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University of Melbourne Researchers