Abstract
The amount of atmospheric ozone was measured at Tokyo during the period from January 1951 to September 1952, using a chromium phototube and glass filters. The ozone amount showed a marked seasonal variation having the maximum value in late spring (about 0.28 cm) and the minimum in autumn (about 0.22 cm).Relations between the deviation from the mean annual variation of the ozone amount and surface high or low pressure were studied. Positive deviations were found near and in front of travelling anticyclonic centers, while negative ones were generally found near the centers of surface low. It seems that a close correlation exists between the ozone amount deviation and wind direction or air temperature in the lower stratosphere.Downward motion of the air in the lower stratosphere, which is supposed to occur above the front side of a trough at 500 mb level, will result in positive deviation, and upward Motion above the rear side of a trough cause negative deviation.
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