A changed climate, with intense rainfall, severe droughts, extreme temperatures will require adaptation measures by countries that will entail significant costs. The World Bank initial study estimates the costs for developing countries "between 2010 and 2050 of adapting to an approximately 2 deg C warmer world by 2050 is in the range of $70 billion to $100 billion a year".
While the exercise is intense, inclusive of all scenario analysis, required measures and the related costs, I have made a feeble attempt at estimating the amount the Indian Govt. spends currently, on adapting to climate change. This comes to about USD 3 bn a year. Following figures (in Rs crs) of all activities:
