A recent article in the journal Geochemistry, Geophysics, Geosystems, reports a spike in the number of methane plumes emanating from coastal ocean depths of about 500 metres [H. Paul Johnson et al]. This may be the beginning of methane hydrate destabilisation in non-arctic waters.
Initially most of the methane is dissolving in the ocean and reacting with oxygen to form carbon dioxide. As a result the coastal water is becoming de-oxygenated which is disrupting the marine eco-system. There are enormous quantities of the very powerful global warming gas, methane, stored in these hydrates. Release can be expected to follow an exponential trend as a result of many natural feedback systems, if we don’t act fast.
We need to impress upon our political leaders the extreme urgency of replacing coal, gas, and oil with renewable energy sources. Take note that the weekend of November 28 (Brisbane) and 29 (Byron, Lennox Head and Lismore) is the time to let our voices be heard in our global millions.
Join the People’s Climate Marches, it may not be too late.
Sapoty Brook, Main Arm – off the grid