Lots of Ink: Ice is melting. Some glaciers, mostly ice caps. Sea level’s up. Did some media miss the point?
Thursday, February 9th, 2012
A letter to Nature published today a letter from a few cryosphere experts (they know their ice) in Boulder at the Univ. of Colorado and the Nat’l Center for Atmosphere Research. It’s mainly a celebration of the growing ability to measure with great precision the integrated impacts of small changes scattered around the globe. Most important, the two GRACE satellites (Gravity Recovery and Climate Experiment) give continuously-updated snapshots of how much ice is locked in glaciers at mid-latitudes, in big ice caps and ice sheets in Greenland and Antarctic, and so on. The result: melting ice is raising sea level just like we thought. But more of it is from the big ice sheets and less from mountain glaciers including on the Tibetan Plateau. And overall melting appears to be about a third less than had been thought – but it still handily explains the observed rise in sea level. And, GRACE has only been running for eight years. That’s not much from which to extrapolate.
So it doesn’t drastically change the general story as much as it adjusts the partitioning of the action.
But check out these headlines:
- Daily Mail (UK) Rob Waugh: New satellite data reveals that Himalayan glaciers are melting far more SLOWLY than predicted ; A story that quotes a reporter at the Register (next bullet down) as saying the info in Nature helps to rubbish the UN’s and the IPCC’s belief that ice melt in the HImalayas is a problem.
- Register – Lewis page: New sat data shows Himalayan glaciers hardly melting at all ; This does, as he points out, demolish once more – as in making the rubble bounce - the IPCC’s stumble into deep muck just about the time of the Copenhagen climate summit debacle. That was when it was revealed that an IPCC summary report erroneously declared Tibet’s glaciers to be doomed to disappear before mid-century. That’s minor news by now, as the error is widely acknowledged.
- The Telegraph – Louise Gray: Melting glaciers on the Himalays not contributing to sea level rise ;
Press in the UK appears to be, from over here, still quite fascinated by Climategate – and has a number of reporters who regard that episode as a serious sign that standard global warming calculations and observations are a colossal, perhaps even deliberate, error. But the Nature letter’s authors say explicitly that their study does not much alter reasons to worry that ice melt is raising sea level (and if scientists know at all what they are talking about, is sure to accelerate it). It’s newsy enough to learn that Himalaya will keep its glaciers a good long while, but to package it as evidence that the same is true of, oh, Glacier National Park in Montana, is a stretch. So is to frame the letter generally as a blow against standard climate science’s ice-melt division. It makes climate science more robust and not precarious.
Other outlets take a more relaxed view of the news:
- The Guardian – Damian Carrington: The Himalayas and nearby peaks have lost no ice in past 10 years, study shows / … loss of ice caps and glaciers around the world remains a serious concern ; Still has its focus on the Himalaya surprise, but does not imply that revision is a proxy for major recalibration of global ice loss ; The Guardian also has further exploration of the report and its reception in media generally – via its Ecoaudit man Leo Hickman: Are the worlds’s glaciers threatened by climate change? ; Scroll down through this to the part that says “My verdict.” Amen.
- E&E Greenwire – Paul Voosen: Melting ice sheets already seen driving sea-level rise ; Voosen turns the theme of the topmost stories listed in this post entirely on its head. In short, while researchers have expected that lower-latitude glaciers, impacted earlier and harder by warming, would contribute most of the globe’s ice melt for some time to come with the vast reservoirs of Greenland and Antarctica taking over eventually, Voosen writes that the baton has been passed already, or: “the future is now.”
- Christian Science Monitor – Peter Spotts: Ice caps not shrinking as much as one thought, new data show ; Yes, but the huge ice sheets of Antarctica and Greenland are pretty much making up for it.
- NYTimes/Greenblog – Joanna M. Foster : From 2 Satellites, the Big Picture on Ice Melt; A straightforward account of the new data and the incremental refinement they provide to the larger picture.
- Reuters – David Fogarty: Study: Himalayan glaciers melting more slowly than thought, but seas are still rising ; His lede’s final phrase : “…which should aid studies on how quickly coastal areas may flood as global warmng gathers pace.” Minor quibble here – Fogarty refers to the GRACE mission as “the name of the satellite.” It’s two tag-team satellites, their slight relative movements a keen gauge of the varying gravity field they encounter. With aid of fancy mathematical deconvolution, that in turn indicates the distribution of mass (including big wads of frozen water piled up on the ground) behind the wiggles.
Grist for the Mill: Univ. Colorado Press Release ; Includes a very cool video color coded for where ice is accumulating (reds) and vanishing (blues). Not much red to be seen.
Other somewhat pertinent news:
- e360 Digest: Louisiana Report Urges State to Brace for 3 Feet of Sea Level Rise ; This summary, I see on reading more closely, is derived from …
- AP – Cain Burdeau: Low-lying Louisiana prepares for sea level to rise ; Bobby Jindal’s administration put the report out, yet manages not once to mention global warming, it says here. Sometimes Denial is not just a river – it’s a whole ocean and it’s moving into the neighborhood.
- Charlie Petit