Thiruvananthapuram: Climate change has disrupted farming schedules as rainfall has become unpredictable, according to S.K. Satheesh, ISRO scientist. If things continue like this, agriculture would be impractical by 2050, he said.
He was presenting a paper at a seminar held by Indian Analytical Science Congress here from September 19 to 21.
Pollution was the primary reason for climate change, he said and added that according to IPCC 1.5 report, the temperature can go up by 1.5 degrees Celsius from 2030 to 2052. At present, the temperature is one degree higher than pre-industrial era, which caused global warming. If it goes up by 1.5 degrees, there will be extreme rainfall and the arctic ice will melt.
"A solution is to cut man-made carbon dioxide emissions by 45 percent by 2030. If action is delayed, things will become difficult to control," he said.
"The climate change communities are concerned about tipping points to a warmer weather, which is irreversible. It the whole of arctic ice melts, things cannot be the same again,"said Satheesh.
Carbon dioxide emissions have to be checked to control climate change. Aircraft emissions also play a major role in carbon dioxide build-up in the atmosphere.
The surface emissions could be removed to an extent by rains and wind. . A plane emits 1.3 tonnes of carbon per passenger during a flight. "Nobody breathes aircraft emissions, unlike vehicular exhaust. However, it creates a problem for stratospheric ozone,"he said. These particles will enhance melting of glaciers. If this goes up, there will be water shortage in the Indo-Gangetic plains by 2050, said Satheesh.
