When does it snow in Tianjin?
If the temperature is below 0℃ at that time, water droplets and ice crystals will be formed when the air is saturated, or in the process of raindrops falling, precipitation composed of white or translucent ice crystals will be formed when the temperature is below 0℃, which is called snow. Snow often appears in the form of branch angles and often condenses into snowflakes. In meteorological observation, the intensity of snow is divided into light snow, light snow, medium snow and heavy snow according to its characteristics.
According to meteorological observation, the near-surface temperature of snow is below freezing point. If the temperature of the air near the ground was above 0 degrees Celsius at that time, the snow falling from the air would melt, similar to hail.
When the freezing height (0 degrees Celsius) is very high, the hail will melt in the falling process and turn into water drops when it reaches the ground. When the diameter of hail is very large or the freezing height is not very high, the temperature rise in the falling process can not completely melt it and fall to the ground, so it is still ice (particles), which is hail.
Matters needing attention in snow travel
1, get ready before you go out. Bring your driver's license and driving license, determine the driving route in advance, and don't change the lane and driving direction at will. Check vehicle steering, braking, tires, lighting and other safety facilities. , there are security risks can't go on the road. When the car body is covered with snow and ice, it should be cleaned to prevent the residual snow after the car starts from affecting the driving sight.
2. Keep a safe speed. Don't drive too fast on the icy road. When the snow on the road surface is deep, try to keep driving at a constant speed on the tracks of other vehicles or on the road surface that has been compacted by vehicles. When climbing in the snow, you must keep twice the usual distance from the car in front. Use the principle of engine deceleration to cooperate with braking when going downhill, and don't always rely on braking.
3. Be careful to pass through complicated sections. For bridges, viaducts, culverts, sharp bends, ramps, and river sections prone to ice and snow, try to bypass. If you must pass, drive at a low speed in this lane, don't overtake, and honk your horn if necessary. Slow down when approaching the intersection, pay attention to observation, and pass cautiously after confirming safety.
4. Avoid slamming on the brakes. When driving a manual car, slowly lift the clutch and gently feed the oil. If you drive an automatic car, the gear should be locked in a low gear, and if there is a snow mode function, it should be opened in time. Slow down smoothly and brake lightly. Don't start suddenly on the slippery road with snow and ice, and don't brake suddenly to avoid tire slipping. When braking, you should reserve a long braking distance.