By Staff Reporters

Many people find it strange that aircraft can't land or take off despite  weather conditions seeming clear.

The answer is that aviation weather forecasting is not the same as general weather forecasting. Even on days that appear sunny and clear, aircraft may not be able to take off due to low cloud height affecting visibility. So what are the differences between aviation weather forecasting and general weather forecasting, and what meteorological factors can affect aircraft flight?

Aviation weather forecasting is crucial for ensuring flight safety, as it provides specialized meteorological services for aircraft takeoff, landing, and in-flight operations. Unlike general weather forecasting, aviation weather forecasting demands more detailed and precise meteorological information.

There are four major differences between the two forecasts: First, in terms of content, aviation weather forecasting covers wind direction and speed, visibility, temperature, ice accumulation, turbulence, and other factors, while general weather forecasting mainly includes general weather conditions, wind speed, and temperature.

Second, in terms of accuracy, aviation weather forecasting requires specific locations, times, and quantities of meteorological data, whereas general weather forecasting usually has broader requirements for location, time, and weather specifics.

Third, in terms of dissemination methods, aviation weather forecasting uses dedicated communication lines to send information to users and international flight information centers, ensuring timely and accurate updates. In contrast, general weather forecasting is typically published on public media.

Fourth, in terms of frequency, aviation weather forecasting has release frequencies ranging from half an hour to six hours, with forecasts or warnings issued immediately if weather conditions affect flight safety. General weather forecasting is released three to four times a day, with warnings issued promptly in case of severe weather.

The impact of weather on flight extends throughout the entire flight period, including takeoff, landing, and air travel. Meteorological factors affecting takeoff and landing include ground crosswinds, headwinds, tailwinds, low clouds, low visibility, heavy rain, thunderstorms, typhoons, heavy snow, and other adverse conditions. Meteorological factors affecting air travel include upper-level winds, air icing, turbulence, typhoons, volcanic ash, and other hazards.