A comprehensive review of nearly 400 scientific papers reveals that lakes on the Tibetan Plateau are transitioning from carbon sinks to significant sources of greenhouse gases. Rising temperatures are causing permafrost thaw and glacier retreat, creating thermokarst lakes that release ancient carbon as carbon dioxide and methane.
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This is a classic positive feedback loop. Warming melts the permafrost, which releases methane, which then drives more warming. The study suggests we need a better typology for these lakes to figure out which ones can still be protected as sinks.
The mention of lake type zoning is interesting from a policy perspective, but I wonder how that actually works on the ground. You cannot exactly regulate a thawing lake in a remote plateau. It is more about global emissions targets than local management.
The methane numbers are the real concern here since it is so much more potent than CO2. Does the paper provide a specific estimate of the total tonnage being released, or is it mostly qualitative analysis of the microbial activity?
