The prevention and control of hail can take the following
The first is forecasting. Since the 1980s, with
the usage of the weather radar, satellite cloud pictures,
computer and communication transmission and other advanced
equipment in meteorological service in great quantities,
the track of the hail activity monitoring ability is greatly
Once local weather station finds the hail weather, it immediately
reports to other weather station that may be affected possibly.
Meteorological departments at various levels combines modernized
meteorological science and technology with long-term accumulated
forecast experience, and mprehensive forecasts the occurrence and
development of the hail, the intensity, scope and the damage, so
the forecast accuracy is increased sharply.
In order to transmit the hail forecasting information to all levels
of government and the masses as much as possible, meteorological
departments at various levels can release “alarm” or “emergency
alarm” by radio across the country, television, telephone and
computer service terminal and severe weather warning system and
other media, making the broad masses to take defensive measures
in advance and avoiding and reducing disaster losses.
The second is prevention and control. Our country is one of the
countries that prevent the hail in the early days in the world.
Because of the severe hailstorm in our country, the anti-hail
work is valued and supported by the government.
Many provinces have established long - term test points, and
carried out rigorous tests, and obtained many valuable scientific
achievements. The artificial anti-hail is carried out to make it
develop in the desired direction, so as to reduce the disaster.
Currently, the common methods are to send the catalysts, such as
silver iodide, lead iodide and dry ice into the cloud with rockets,
high guns or aircraft. On the ground, send the silver iodide and
lead iodine dry ice and some other catalysts to the free atmosphere
before cumulonimbus clouds forming, making these material play a role
of hail embryo in the hail cloud, multiply the hail embryo so the hail
On the ground, rockets and high cannons are fired into the hail cloud,
or rockets and bombs are placed on the aircraft to destroy the water
transport of the hail cloud. Using rockets and high cannons to scatter
nuclei in the warm cloud to make the cloud form precipitation to reduce
the moisture in the cloud. In the cold part of cloud, scatter the ice
core to suppress the growth of hail embryos.
The third is to take a variety of hail measures. Commonly used methods
are: in the hail belt, planting grass and trees, increasing the forest
area, improving the geomorphological environment and destroying hail
cloud conditions to reduce hail disaster; Increasing anti-hail and resilient
crops; timely collecting mature crops; In the hail season, farmers carry
anti-hail tools, such as bamboo baskets and wicker baskets to reduce