Cause of weakening typhoon No. 10 Is the effect of the preceding typhoon decreasing seawater temperature 20:46 on September 7?
Typhoon No. 10 was expected to develop at a special warning level with a central pressure of 930 hectopascals when approaching Kagoshima Prefecture, but it stopped developing as it passed through the East China Sea, and then weakened.
Regarding this factor, experts analyze that typhoons 8 and 9 that passed through the East China Sea in the past were affected by lowering the seawater temperature in the surrounding area.
Generally speaking, a typhoon becomes stronger when it passes through a place where the seawater temperature is high, because steam that is an energy source is supplied. The seawater temperature will drop.
According to Dr. Akiyoshi Wada, Director of Meteorological Research Institute, Japan Meteorological Agency, who is studying the influence of ocean environment such as seawater temperature on typhoons, typhoon 10 passed where seawater temperature of East China Sea decreased due to typhoons 8 and 9. Therefore, I analyze that development may have been suppressed.
In addition, Mr. Wada said, ``Because the period from the arrival of Typhoon 9 on the Korean Peninsula to the arrival of No. 10 in the East China Sea was relatively short, the sea surface was covered with clouds, and the water temperature was estimated from satellites as data to be used for prediction. I couldn't get it."
On top of that, Mr. Wada said, "It has remained the same category as a typhoon that affects Japan. The distribution of damage will change even if the position of the typhoon changes slightly, so please do not loosen your caution even if there was no damage this time. The typhoon season will continue next month, but the sea surface temperature continues to be extremely high in the south of Japan. There is a strong possibility that typhoons with increased intensity will come in the future, so please continue to be cautious." I am.