![]() ![]() Folks should instead learn to seek further knowledge. Pretending that the simplest soundbite MUST be honoured is deliberately foolish. Given current conditions, there is no chance for recovery. The multiyear ice that is left is just “teenager” ice - little better than “baby” first year ice. There is essentially no “grandfather” old ice left. Multiyear ice acts to cool the planet by reflecting summer sunshine. First year ice acts to warm the planet by insulating the ocean in winter. Eventually, after perhaps 6 years, it simply will not melt away, but instead is lost via drift as it is exported, primarily through the Fram strait. It gets many times thicker and many times harder and resistant to melt. Each year it survives, more and more salt melts its way through the bottom. First year ice has a lot of salt entrained. Re: EJ (#19), Yes, multiyear ice is completely different than first year ice. Just think Phil, according to ice core and other paleo data we may be overdue for an ice age. Since 2000, that amount of decline has nearly tripled.” “From the 1970s through the 1990s, perennial ice declined by about 500,000 square kilometers (193,000 square miles) each decade. “The winds causing this trend in ice reduction were set up by an unusual pattern of atmospheric pressure that began at the beginning of this century,” Nghiem said.” When that sea ice reached lower latitudes, it rapidly melted in the warmer waters.” “Unusual atmospheric conditions set up wind patterns that compressed the sea ice, loaded it into the Transpolar Drift Stream and then sped its flow out of the Arctic,” he said. “Nghiem said the rapid decline in winter perennial ice the past two years was caused by unusual winds. ![]() Larry I’d suggest you bet on a new Arctic record low this fall.Īpparently you didn’t get the NASA MEMO? Arctic sea ice loss may have a cause other than global warming: Here’s an illustration of the loss in thickness this year:Īnd judging from Quikscat more of it has gone since March The animation does show the growback this winter and also the loss of multiyear ice via the Fram strait and extensive breakup of the ice pack in the Beaufort sea. Your attempt at denigrating the loss of multiyear ice is likely to come back to bite you in the fall considering how much has been lost this winter. Wow clutching at straws aren’t you Steve? A fairly meaningless shift of the growth-rate of the Antarctic sea ice which has already been reversed. Levels are the third highest since the commencement of records in 1979, exceeded only by levels in 19. World sea ice in April 2008 reached levels that were “unprecedented” for the month of April in over 25 years. Perhaps you should reword your title to reflect the content more accurately. Not exactly an accurate description is it Steve? ‘World Sea Ice’ was higher than that for Nov/Dec last year and for more than 6 months the year before! World Sea Ice Increases to Levels “Unprecedented” in 25 Years UODATE: NOAA reported high March 2008 SH sea ice here. I’ve uploaded my collation of the NOAA data to. Instead of perhaps celebrating the dramatic recent increase in sea ice, they complain that there has been a loss of “multiyear sea ice”. Peruse an archive of map displays of the atmospheric and radiative climatic conditions leading up to the record setting Northern Hemisphere sea ice minimum of 2007: sea ice autopsy They provide an animation showing declining sea ice to 2007 lows, but not the subsequent recovery in 2008: You’ve heard Al Gore comment that the “Earth has a fever”? It may also have major tooth decay. Īs suggested by a reader, here’s the same information with each monthly series plotted as a separate line (April-solid January – dotted.) The surge in anomaly area in 2008 is not limited to a single month, but is consistent for all 4 months to date (and for the YTD average).Īt Cryosphere Today, they provide the following scientific description of recent sea ice changes: The graph below shows the monthly anomaly (aggregating NH and SH), collating information from. It was also the second highest single month in the past 20 years (second only to Sept 1996). This continues a pattern established earlier in 2008, as global sea ice in March 2008 was also the third highest March on record, while January 2008 sea ice was the second highest January on record. Levels are the third highest (for April) since the commencement of records in 1979, exceeded only by levels in 19. On a global basis, world sea ice in April 2008 reached levels that were “unprecedented” for the month of April in over 25 years. Four of the past 5 months are “all-time” records for Southern Hemisphere sea ice anomalies, “unprecedented” since the data set began in 1979 as shown below: ![]()
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