Ancient Canadian Cold Snap Weakened India's Monsoon 8,200 Years Ago: Study Reveals

• A new study by Birbal Sahni Institute of Palaeosciences (BSIP) reveals an 8,200-year-old Canadian cold snap severely weakened the Indian Summer Monsoon.
• The '8.2 ka Cooling Event' saw a 3°C temperature drop in Greenland and disrupted global water cycles.
• Massive freshwater influx from Canada's Lake Agassiz into the North Atlantic disrupted ocean currents, specifically the Atlantic Meridional Overturning Circulation (AMOC).
• Evidence found in Chhattisgarh's Tuman Lake sediment samples, showing dry plant species replacing humid forests, indicates reduced monsoon rainfall.
• The research highlights a 'teleconnection' between the North Atlantic and the Indian Monsoon, offering a warning for future climate change impacts on India's agrarian economy.