Abstract

Qinghai is located in the Qinghai-Tibet Plateau. Winter is cold and snowy. The average temperature in winter is minus 8°C, and the lowest temperature can reach minus 30°C. The most snowfall days reach more than 40 days, the least can reach more than 20 days; Meteorological requirements have accurate measurement of wind direction and wind speed sensor equipment, and winter low temperature snow, precipitation caused by wind speed sensor equipment ice or snow, resulting in wind direction and wind speed sensor can not work normally, directly resulting in wind direction and wind speed parameters may be abnormal, often snowfall or other weather phenomena, easy to lead to runway surface pollution. According to the requirements of the Air Traffic Management Rules of Civil Aviation, in the case of runway pollution (snow, water, frost, ice, wet), it is not allowed to take off and land downwind, and when the controller refers to the wrong meteorological wind direction and speed, the aircraft is prone to deviate from the runway and unsafe incidents occur.