Even with a considerable increase in the global warming element it would take 40,000 years to completely melt the greatest of the ice caps in the Antarctic. Mostly likely that would have a sea level rise of only about a foot or maximum of a foot and a half about every 200 years, not including certain amount due to thermal expansion of the upper layers of the Ocean.
Presently there's not enough CO2 at 400 ppmv to make much of a difference. It would something over 1,000 ppmv to completely denude the Earth of glaciers and ice caps. But it would still take a long time in human terms.
The greatest danger is most advanced mammals are not built for respiration in a atmos of 1,000 to 2,000 ppmv. German book translations that I read years ago and were originally published almost a century ago warned about this. Particularity out-gassing and liquefaction programs like fracking run the risk of long term break down in carbonate rocks. This would easily put enough free CO2 out to extinct all higher mammals and even all other advanced animals if the level gets high enough. 5,000+ ppmv would probably leave bacteria as the only survivors.
The next trick of our glorious banks will be to charge us a fee for using net bank!!! You are no longer customer, you are property!!!
a sea level rise of. 120m was avert serious event and so will be the perhaps 100m drop as the holocene ends, as it will. The natural state of the home planet is glaciation, not the unusual warm periods, like the holocene.
Very high up. What if you get snowed in regularly when the climate changes? What if your house is destroyed in an ice storm or run over by a glacier when the climate has finished changing?
I know the Tablelands quite well - I would be prepared to take that risk.
Any expressed market opinion is my own and is not to be taken as financial advice
You are correct, it does, but not instantly, it can take a great deal of time for water to flow back out to sea, especially if it is captured for future use by humans.
And a lot of it goes into aquifers as well.
The truth will set you free. But first, it will piss you off. --Gloria Steinem AREPS™
You were not talking about the total 3cm impact of all dams in the world starting empty and being filled to capacity over 100+ years.
Your original claim was that global sea levels fell to a measurable extent due to 'extra rain' captured by humans over one year.
Actually, he said that the sea level fell because of unusually high rainfall over continents. Some of that effect is in captured water storage. Some of that effect is in the fact that it takes a year for water to flow from the source to the mouth of the Murray Darling system (for example) anyhow. Some of that is replenishment of aquifers, some of that is a huge increase in subsoil moisture. Or you could just say that when water falls on land, it takes time for it to run back to the Ocean.
All this is quite uncontroversial. The real story is that for the first time in human history, it is possible to measure a perturbation of only an inch or so in the sea level and take less than a year to do that measurement.
After all the sea level has risen by an average of about 25mm per decade for the last 5,000 years, but in the past it has taken more than a decade to get an accurate fix on mean sea level at any point because the sea level changes so much.
The truth will set you free. But first, it will piss you off. --Gloria Steinem AREPS™
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