Eye of △ typhoon wind (Oriental IC/ is sent)
Civilian sound the world on August 20 Beijing dispatch " is this how? How with respect to so much typhoon? " , this is recently a most question that many small cully ask in friend circle. What what experience like everybody truly is same, up to now, typhonic amount is unusually much this year; Land our country only have 8.
Bring about such the typhoon appears, be because of,He Yuan after all? To this, letter glad is accepting analyst of weather of Chinese weather channel " Min Shengjun " when be being interviewed solely, express, since August, more equatorial air current slants strong. End to August normally, generate 13-14 probably typhoon, arrive this year on August 19 when, generated 20, this also is since 1949, lay the condition of 20 typhoons the earliest, and be in early 1961 gave birth to 20 on August 20. Especially in August, appear up to 19 days of our country come 8 typhoons; Among them, 7 " produce oneself " , 1 from east Pacific Ocean " entrance " .
Believe to see a group of such data, small cully people feel astonishment certainly, why to appear thick and fast so many typhoon? Letter glad emphasizes pointing out further, with Australia the cold air there slants this strong about. Australia is in the Southern Hemisphere, be in winter, australian was equal to us in August in Feburary. After the antarctic cold air of the area arrives at Australia, still can continue to advance to equatorial area, such from antarctic - Australia - equatorial south wind air current, after crossing equator, and subtropic the east wind air current to high pressure encounters, what formed air current is anticlockwise turn, rub goes out some anticlockwise gyral small vortex, namely initiative disturb. And in August because marine temperature is high, original with respect to the benefit development at the typhoon, because existence is many and initiative,disturb, the part disturbs to get developing below favorable backdrop, so since August, typhoon each generate ceaselessly. (write civil / Kuang Ji)
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