Special Issue (Environmental Engineering)Paper
METEOROLOGICAL CONDITIONS OF SO2 HIGH CONCENTRATION EVENTS IN THE SOUTHERN PART OF THE CRATER FLOOR OF MT. ASO
2023 Volume 79 Issue 25 Article ID: 23-25048
Details
2023 Volume 79 Issue 25 Article ID: 23-25048
To examine the occurrence of sulfur dioxide SO2 high concentration events exceeding the environmental standard and the relationship between the events and meteorological conditions, SO2 concentration data which was obtained in the southern part of the crater floor area of Mt. Aso by the special vehicle for atmospheric environmental observation and various existing meteorological data were analyzed. And numerical simulation of SO2 behavior using the WRF was carried out to clarify mechanism to transport from the Nakadake crater of Mt. Aso to the bottom of the southern part of the crater floor. It was found that the SO2 high concentration events generated by downslope wind occurring in cold air mass inflow and by valley wind circulation.
