The one year ice story has never made sense to me. If it is the case that an unusually warm period causes more that normal melt, then when (and if) things return to "normal" there must be by definition a more than normal quantity of one year ice. My logic doesn't mean there should be no concern about ice melt, but citing such short run indicators of problems at best creates confusion when (and if) they're reversed. If global warming is "proved" by ice melt, then how does one escape the conclusion of the reverse if the ice refreezes? We read from naysayers that last year's (or whenever) temperatures fell back to those of 10 years ago. I'm in no position to know whether this is true or not, but if it is, how does it not obviate citing the previous nine year's increases as evidence for global warming? Of course there is other compelling evidence. I'm suggesting that be the focus rather than these short term trends. _____
From: [email protected] [mailto:[email protected]] On Behalf Of David Schnare Sent: Wednesday, May 13, 2009 9:34 PM To: [email protected] Subject: [geo] Re: The Arctic Ocean Mean Ice Thickeness 177.7 cm On May 4th, the NSIDC <http://nsidc.org/arcticseaicenews/index.html> announced that "Arctic sea ice extent at the end of April 2009 was within the expected range of natural variability." and "The decline rate for the month of April was the third slowest on record". Let's all revisit this in August, when the July data is in. Then we will see what's going on. It may well be that we will have rather a lot of two year old ice next year. Or, maybe not. Why guess when in a couple of months we will know. dschnare <http://nsidc.org/data/seaice_index/n_plot_daily.html> Northern Hemisphere extent trend graph On Wed, May 13, 2009 at 7:17 PM, Albert Kallio <[email protected]> wrote: The Arctic Ocean's cross-sectional profile of sea ice thickeness was 177.7 cm meaning that virtually all ice that was encountered was about year old, leading to speculations that the sea ice break-up and melt away takes place. The 75-day Catlin Arctic Survey was completed today three weeks early due to the weakening of the sea ice and that already one Canadian and one Danish team of explorers had to be emergency rescued due to weakening ice. _____ Get the New Internet Explore 8 Optimised for MSN. Download Now <http://extras.uk.msn.com/internet-explorer-8/?ocid=T010MSN07A0716U> -- David W. Schnare Center for Environmental Stewardship --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en -~----------~----~----~----~------~----~------~--~---
