This source [0] shows 34 tonnes of CO2 per GWh from hydro and specifically mentions the releases from reservoirs and 820 tonnes per GWh from coal.
The springer link unfortunately doesn’t have any numbers for tonnes to compare but mentioned lush Amazon rainforest being flooded and the vegetation at the bottom producing the most methane which is 25x more potent ghg than CO2, resulting in 3.6x equivalent warming than due to burning coal which primarily results in CO2.
The springer link unfortunately doesn’t have any numbers for tonnes to compare but mentioned lush Amazon rainforest being flooded and the vegetation at the bottom producing the most methane which is 25x more potent ghg than CO2, resulting in 3.6x equivalent warming than due to burning coal which primarily results in CO2.
0: https://www.visualcapitalist.com/uranium-powering-the-cleane...