Coping with climate change
I read Vibha Sharma’s piece, “Challenge of climate change” (Perspective, Nov 8). Fears over global warming due to Carbon dioxide emissions are without any scientific data and reasoning. The presence of CO2 in the air is just 0.03 per cent! No scientific institution has measured the actual increase in CO2 concentration in the air as a result of burning of fossil fuels (thermal power plants, vehicle, gas and domestic fuels). The micro increase in CO2 concentration can hardly trap sufficient solar energy to cause appreciable global warming. Secondly, increased CO2 concentration translates into increased yields in the crops to keep the average value as constant. For example, India now produces 225 mt of foodgrains annually as against 150 mt in 1972. This increase amount of 75 mt comes from the increased concentration of CO2 only. Consequently, CO2 emissions have no role in causing global warming or climate change. Likewise, there is hardly any published scientific data to suggest that average temperature at a particular place (say Chandigarh) over the years has increased by say, 1 degree C and thus, the phenomenon of global warming is simply a myth. As a matter of fact, we do not see the hot summers of fifties or sixties these days in northern India anymore because of over irrigation of agricultural land. Climate change is not a new phenomenon. The climate parameters always deviate varyingly from the mean value and sometimes very wildly. The rainfall at most places does not show any pattern. Northern India had a bout of severe famines for seven years during 1939-46. There were no thermal power plants in India during those days to cause CO2 emissions. In fact, climate change is the result of multiple factors some of which are still unknown or unexplored. The El Nino effect is one such factor. Use of large quantity of water for irrigation of paddy fields also disturbs the formation of depression zone and weakens the monsoon current. The melting of glaciers in the Himalayas is beneficial for power generation and irrigation of agricultural lands during the critical summer months. RAM NIWAS
MALIK,
Engineer-in-Chief (retd.), Gurgaon
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