Air pollutant transport in a coastal environment—II. Three-dimensional simulations over Los Angeles basin

Study of wind field under sea breeze conditions; an application of WRF model

Air pollution transport in the Kathmandu valley/basin has been investigated by numerical simulation of local flows and the observation of NO2 and SO2. The observation was performed at 22 sites with passive samplers from February to April 2001, and the fifth-generation Pennsylvania State University–NCAR Mesoscale Model (MM5) was utilized for the flow simulation. The calculation reproduced reasonably well the surface wind and temperature at the Tribhuvan International Airport (TIA) as well as the vertical wind profile taken at the center of the valley by sodar observation. The calculation showed that two characteristic local flows tend to intrude into the valley/basin in the afternoon through the mountain gaps surrounding Kathmandu, that is, the southwesterly from the Indian Plain and the northwesterly from the valley west to Kathmandu. These cool wind layers meet at the center of the Kathmandu basin and form a double-layering structure there. The lower layer is shallow with a depth of about 250 m,...

Numerical simulation of late wintertime local flows in kathmandu valley, nepal: implication for air pollution transport

https://yorkspace.library.yorku.ca/xmlui/bitstream/handle/10315/4153/HAS050.pdf;sequence=1

Observational evidence for the impact of the lake breeze circulation on ozone concentrations in Southern Ontario

Impact of a sea breeze event on air pollution at the Eastern Tunisian Coast

Numerical analysis of the role of sea breeze fronts on air quality in coastal and inland polluted areas

Long range transport of acidic pollutants from Asian continental countries, such as mainland China and Korea, to Japan begins to be recognized among the scientists in Japan and the other countries. Especially, measurements of acid deposition in Japanese cities along the Japan Sea rim suggest that such a long range transport likely occurs in winter, when cold air mass formed over the continent flows towards Japanese Islands. During the travel of the cold air mass over the warm Japan Sea, convective clouds develop and finally result in severe snowfall over Japan.

Eiichi Kitagawa

Papers

Numerical analysis of the role of sea breeze fronts on air quality in coastal and inland polluted areas

Numerical Study of the Formation of Acidic Species in the Convective-Cloud Streets Over the Japan Sea in Winter