Cold Stratosphere Accompanying a Typhoon

Abstract

A very cold stratosphere is found often in front of typhoon, the tempereature of which is generally below -70°C. It is supposed that this cold air mass may be brought by strong wind around the typhoon from equatorial region. From those phenomena, the following rules for typhoon movement and the distribution of temperature in the stratosphere are derived.
1. A typhoon moves towards a cold area, avoiding a warm area.
2. A typhoon moves towards the tip of cold tongue in front of typhoon.
3. A typhoon has a tendency to move towards -70°C area.
4. A typhoon moves along a cold trough of temperature.
5. A typhoon recurves or fills up, if a warm air invades in its front.
6. If the temperature of the stratosphere in Japan is higher than -60°C, typhoons will not attack Japan.