Since we have such an active community of armchair oceanographers and spreadsheet Glaciologists here, I thought it would be useful to speak to the real thing, the people who actually spend time on the ocean, on the ice sheets, do the measurements, and come back to share that knowledge with us. I had just that opportunity at the American Geophysical conference in December.
I spoke to Josh Willis, Oceanographer with NASA at the Jet Propulsion Lab – Josh is one of best known young ocean scientists on the planet. He pointed me to the recent Kemp et al study of tidal marshes on the US East coast, which has produced a long record of sea level over the last 2000 years, complete with a very Hockey-stickish uptick during the last 200 or so.
Jason Box of the Byrd Polar Center at Ohio State was there, presenting evidence of acceleration in Greenland ice loss over the last 200 years.
His bottom line – “If we talk 10 years from now, my expectation is that Greenland will be losing roughly double what it is now.”
I round out the video with takes from old pros lead NASA scientist Jim Hansen and Admiral David Titley, the US Navy’s Chief Oceanographer.
For more, see my previous Sea Level video –
Kemp et al – Climate related sea-level variations over the past two millennia
Vermeer, Rahmsdorf -Global Sea Level Linked to Global Temperature
Skeptical Science – Is Sea Level Rise Accelerating?
Skeptical Science – Sea Level Hockey Stick
Real Climate: 2000 Years of Sea Level
Real Climate: Sea Level Rise Accelerating
Potsdam Institute for Climate Impact research – sea level pages
Nevermind the satellites. Actual data is so overrated!
the armchair oceanographers have shown up! That was quick..
Um, satellites confirm both rapid Greenland ice sheet decline (GRACE) and sea level rise. Actual data supports everything said in this post.
It’s people like Jim Hansen who are missing from the debate! I wonder what’s preventing him from weighing in?
Didn’t watch the video eh?
Skeptical Science also has a post on Kemp’s sea level hockey stick research:
http://www.skepticalscience.com/sea-level-hockey-stick.html
Verba volant
Scripta manent.
Which is why we have scientific peer-reviewed journals to back up the words for the forgetful.
I knew I’d find the perfect information at climate crocks to post on a newser.com story about how the “cup is half full” folks are celebrating the fact that projected global warming will help us “defer” a possible ice age 1500 years from now. http://www.newser.com/story/comments/137157/co2-emissions-will-defer-ice-age.html
The best part is that those who deny that CO2 is causing significant warming (i.e. at WUWT) are also latching onto this claim that CO2 is preventing the next ice age. Nah, no contradiction there!
Is there a peer-reviewed paper showing sea level rise is accelerating? At a global level.
A 20th century acceleration in global sea-level rise (2005/2006)
Thanks but..I meant, anything recent, as in anything supporting the claim the rise is accelerating now.
You don’t need a peer-reviewed paper to show that. Just look at the data yourself. Sea level rise 50-100 years ago was 1-2 mm/year, now it’s 3-4 mm/year. That’s an acceleration.
“Thanks but..I meant, anything recent, as in anything supporting the claim the rise is accelerating now.”
Isn’t 2006 recent enough for you? Sheesh!