Sea level rise.
This NYT arty mentions that, also has mention of another paper that finds increased seismic activity lately under the Greenland ice sheet…
Do you have any references showing the rate of sea level rise actually increasing over the historic rate of ~1.7 mm per year for the last few thousand years? (3 year “trends” don’t count)
“Fifty million years ago, CO2 levels may have topped 1000 parts per million by volume (ppmv) and sea levels were about 50 meters higher than those today”
Somebody should tell them about continental drift? Typical scaremongering.
Steve, if you set aside your pre-conceptions and pay attention (to, e.g., the icequake paper), you’ll see that the dynamical melting that’s the subject of this brouhaha is *very* recent. The concern is not so much about the current rate of sea level rise but about the extent to which the observed trend could accelerate. Also, your a priori assumption that climate scientists are complete morons and don’t take such things as continental drift into account where needed only serves to make you appear foolish. BTW, it may be that continental drift isn’t especially relevant to that calculation since if it can be established that temps were simply too warm for ice to be present, then it’s a fairly simple matter to calculate an approximate sea level rise (assuming that the total amount of water and average ocean depth are roughly constant, which I suspect they are).
Steve B said:
“The concern is not so much about the current rate of sea level rise but about the extent to which the observed trend could accelerate”
Note the key word is “could”.
Like I said, is there some evidence of sea level rise acceleration?
Also, Steve B,
Your assumption that *I assume* climate scientists don’t take such things as continental drift into account is incorrect as stated. They said “sea levels were about 50 meters higher than those today.” The real issue is how has oceanic circulation changed with drift,
so comparing climate 50 million years ago with today makes no sense – especially with ice sheets etc.
But I guess you didn’t pick up on that.
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