India makes artificial rain against drought

Indian scientists are studying new artificial rain techniques to deal with the terrible heat wave in northern states.

The Indian Institute of Tropical Meteorology has recently tested a series of artificial rain-causing techniques. The Indian government used US cloud technology, but it now requires scientists to develop new techniques to increase rainfall. Experts also want to find out what causes some clouds to have more water and create bigger rain drops than other clouds.

' In clouds producing little rain, the transition from vapor to liquid does not happen. In order for this transition to occur, the size of tiny water droplets must gradually increase to become drizzle and heavy rain , 'explains Dr. JR Kulkarni, team leader.

Kulkarni's group is following the rain in India with an improved aircraft to track the characteristics of the clouds that create the most rainwater. In the next phase, the team will spray silver iodine into the clouds to stimulate condensation and create large ice crystals. These ice crystals will fall in the form of snow before dissolving into water.

The heat wave caused many fields in India to dry up.(Photo: Telegraph)

On the theory of artificial rain-making process, there are 3 stages . First, people use airplanes to spray chemicals that stimulate the air to rise and form clouds. Chemicals used in this period are CaCl ₂ , CaC ₂ , CaO, compounds of salt and urea, anlonium nitrate. These compounds are capable of absorbing water vapor from the air mass, thus stimulating the condensation process.

Next is the accumulation period. During this period, the number of kernels condensed and the density of cool particles increased in the clouds. In the final stage, aircraft sprayed on cloudy blocks of slow-growing chemicals including silver iodine (AgI) and dry ice (frozen CO2). They cause the highest level of imbalance, creating many water particles. When the particle size is large enough, they will fall to the ground.

The rainy season in India usually starts in June and lasts until September. But this year June has passed but most states in this South Asian country have not yet received any rain. The current heat wave has claimed hundreds of people 's lives, drought many fields and caused a shortage of drinking water in many big cities. For more than 3 weeks, temperatures in northern Indian states have consistently exceeded 40 degrees Celsius, many of which have temperatures of up to 45 degrees Celsius. Power cuts in some states occur frequently due to electrical systems. meet the needs of the people.

In India, agricultural production, the stock market and even political activity depend on the rainy season. In Andhra Pradesh, farmers are concerned that their food production will decrease by 30% compared to last year. Rain has fallen in this state, but the rainfall is only half of the expectation of the people.