Key Points
Over land, the annual mean temperatures have risen by as much as 1.59 degree Celsius since preindustrial times, according to the latest report of the Intergovernmental Panel on Climate Change..
An assessment of climate change over the Indian subcontinent, published by the Ministry of Earth Sciences in 2020, said annual mean temperatures had risen by 0.7 degree Celsius from 1900..
More recent research suggests that the higher warming in the polar region could be attributed to a host of factors, including the albedo effect, changes in clouds, water vapour and atmospheric temperatures...
However, the 0.7 degree Celsius temperature rise over India has to be compared with the warming seen over land areas, not the entire planet..
As M Rajeevan, former Secretary in the Ministry of Earth Sciences, put it, aerosols have the potential to avoid 0.1 to 0.2 degree Celsius of warming over the Indian region..
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