This paper will help navigators to learn how to analyze and forecast the path of typhoon with upper airchart.
对船舶驾驶员学习使用高空天气图分析和预测台风路径有一定的指导作用。
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The average concentration of ozone, one of the most common pollutants, is about half its level in the early 1990s, when the air was at its dirtiest (see chart).in.
Then again, BA and AA are actually slightly less dominant at Heathrow, controlling 58% of seats, less than Air France-KLM and Delta in Paris, or Lufthansa and United in Frankfurt (see chart).