International Civil Aviation Day, together to see what the difference between aviation weather forecast and ordinary weather forecast

The News Today (December 7) is the International Civil Aviation Day. Aircraft has become one of the common transportation, meteorological and aviation security is like the relationship between fish and water, flying out of the weather conditions. The analysis of the causes of the plane crash shows that 4.5% of the international air crashes are caused by meteorological factors. Small knitting to take you to see what weather factors affect aviation safety, aviation weather forecast and ordinary weather forecast what difference.

What meteorological factors affect aviation safety?
Meteorological factors and invisible meteorological factors are visible.
Visible meteorological factors: strong convection, Thunder, Typhoon, Gale, heavy rain, snow, fog and haze, sandstorm.
Non-visible meteorological factors: wind shear (that is, winds, wind speed in the air level and vertical distance of sudden drastic changes), air turbulence, excessive cold water caused by air ice.
The meteorological "killer" of aviation safety
Low visibility: When the airport visibility is less than 350 meters, the aircraft can not take off, less than 500 meters, the aircraft will not be able to land, if visibility is less than 50 meters, the aircraft can not even glide, the pilot's improper disposal of the words are very easy to cause flight accidents.
Summer "killer": Thunder and Lightning.
Winter "killer": Ice and snow.

Event
Fog: January 8, 2003, Turkish Airways flight 634 crashed in the thick fog before the final landing.
Thunder and Lightning: April 20, 2012, Pakistan Bhoja Air Air Flight NO. 213, 127 people were killed in the crash. As the plane landed, the sky was pouring rain, thunder and lightning, the plane crash may have been hit by lightening.
Blizzard: November 15, 1987, a Continental Airlines passenger plane took off in a snowstorm, because the wings of ice, the aircraft crashed at the Denver International Airport.
Rainstorm: October 31, 2000, Singapore Airlines Flight 006 took off at the Taipei Taoyuan International Airport under the rainstorm of a typhoon like God and crashed into an obstacle as it took off. 83 people were killed on the aircraft.
Blizzard: February 3, 2005, Afghanistan's Camden Air Flight NO. 904 crashed in a snowstorm, on board 96 passengers and 8 crew members were all killed.

Friendly Tips
1. In the event of bad weather, postpone takeoff, do not panic without forced boarding, safety first.
2. Before arriving at the destination, the plane usually broadcasts the ground weather conditions, which can be referred to when the machine is worn.
Aviation meteorological forecast and ordinary weather forecast
Aviation meteorological forecast is more precise than ordinary weather forecast, which needs fixed point, timing and ration.
Fixed point: Accurate to a specific place, such as the airport near the dozens of km range.
Timing: Specific to the required time range, such as the weather forecast for aircraft take-off and landing time.
Quantitative: The prediction of elements and intensity is more precise and specific.

The important role of meteorology in aviation
1. Meteorology is an important factor affecting the safety of civil aviation.
2. Meteorology is an important factor affecting the economic efficiency of civil aviation.
3. Meteorology is an important basis for the decision-making of major events and major projects in civil aviation.
The origin of international Civil Aviation Day
The December 7 of each year is the international Civil Aviation Day. December 7, 1944, 52 countries signed the Convention on International Civil Aviation (also known as the Chicago Convention) in Chicago. In accordance with the provisions of the Chicago Convention, April 4, 1947, the International Civil Aviation Organization was formally established. The 29th session of the International Civil Aviation Organization (ICAO), held in September 1992, resolved that December 7, since 1994, the 50 anniversary of the signing of the Chicago Convention, will be designated "International Civil Aviation Day" each year.