Abstract：Based on the statistics of the meteorological observations at Beijing Airport during the 30 years from 1971 to 2000, the objective laws of the diversification of the disastrous low cloud are summarized. The typical weather situation of the disastrous low cloud weather during the 30 years is analyzed and arranged. The results show that, cold front and back pressure are the main weather situation, and the disastrous low cloud always occurred followed with high humidity, low visibility and other weather conditions. Impact factors of this kind of weather are generalized, which may play a role in guiding the practical airport weather forecast.
2012, Vol. 29 