Abstract
Previously, the author (1976) investigated statistical relations between meteorological elements and the oxidant concentration in Hiroshima Prefecture using the data of warm season in 1974. In this previous paper, correlations between several meteorological elements and the daily maximum value of the oxidant concentration in Hiroshima Prefecture were examined, where the selected meteorological predictors were the wind direction and speed at 950mb level, the static stability of lower atmosphere and the maximum surface air temperature during the daytime.
The present paper reports the extended analysis with new supplementary predictors, the washout effect of rainfall and the maximum value of the oxidant concentration measured at 0900JST in Hiroshima Prefecture. The data of warm seasons from 1976 to 1978 are used in addition to those of 1974. The steadiness of the above correlations is tested by the data of 1975. Here, the present investigation is aimed at the prediction of the daily maximum oxidant concentration in Hiroshima Prefecture whose day is same as that of the prediction publication in the morning. In conclusion, it is suggested that an improved prediction scheme of the oxidant concentration in Hiroshima Prefecture can be obtained on the basis of the present analysis.
