Yasushi Ogawa

TL;DR: In this article, a series of aircraft measurements were conducted from 8 to 12 August 1978 covering the Tokyo Metropolitan area to investigate the photochemical smog formation mechanism over the Kanto plain.

TL;DR: In this paper, a wind tunnel designed to study the effects of thermal stratification on flow and diffusion in the atmospheric boundary layer has been constructed and three independent temperature systems that control the ambient air temperature (from 12 to 87° C), the temperature profile (gradient up to ∂T ∂z = 25°C m −1 ), and the surface temperature (eight individual floor panels, from 7 to 112°C for each) in the test section.

TL;DR: In this paper, the effects of wind direction on the mean wind velocity, turbulent intensity, power spectra, cavity wake length, and rooftop and wake region concentrations were measured by eight ultrasonic anemometers, a three-dimensional network of wind vanes, and SF6 tracer gas experiments.

TL;DR: The spatial distribution and transport process of photochemical pollutants covering the Tokyo metropolitan area in Japan were investigated from 31 July to 2 August 1979 using three-dimensional trajectory analysis in which the wind field was determined by objective analysis techniques from pilot-balloon observation data as discussed by the authors.

TL;DR: In this paper, field and wind tunnel studies of the flow and diffusion around a cube were conducted and it was found that as the wind angle increased, Lc/H increased, and as the upwind turbulence intensity decreased.