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Post by nautonnier on Oct 6, 2014 18:50:50 GMT
I questioned a group of pro warming people recently about how the Antarctic could be melting and pasted temp data showing how the interior never really goes above 0°c. I was told the reduction in ice mass was because the glaciers spread out to sea and this us what causes the increased ice extent. The analogy put to me was a scoop of ice cream slowly spreading out.... I didn't ask if it had stopped snowing or why ancient frozen glaciers in sub zero regions were affected by 0.whatever increase, now paused, world warming. Their argument makes no sense to me.... It makes no sense. Glaciers only move because snow is falling at their source. The snow compacts into ice as more snow falls on top of it and the weight of the ice at the source of the glacier starts the ice slowly moving. If the glacier reaches the sea then it will project out into the sea and chunks will 'calve' off the leading edge. If the rate of melting of the ice is greater than the snow fall at the source of the glacier the glacier will 'retreat'. If the rate of snow fall is higher than the calving or melting rate then the glacier will grow. If there was no show at the source of the glacier and no melting then it would just stop moving. If you put a scoop of ice cream in a freezer - it will not 'spread out'
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Post by icefisher on Oct 7, 2014 1:57:26 GMT
Mean Artic ice extent for September has been updated at DMI Checking back through the record a significant rise in mean sea ice extent has occurred for two successive years only on two other occasions 1990/1/2 and 2008/9/10. We await with interest September of 2015 My guess is that for the next 2 or 3 years we are going to see a decline in September ice from this year's level, perhaps even a new record low in 2 or 3 years. Also looks like that if we had used DMI vs Cryosphere as the measuring stick I would have won this years poll since my prediction was for a slight increase over 2013.
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Post by douglavers on Oct 7, 2014 6:03:24 GMT
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Post by nautonnier on Oct 7, 2014 9:35:08 GMT
From cool Florida - I would say that terawatts of heat are not reaching the start of the Gulf Stream reducing the priming of the thermohaline pump.
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Post by flearider on Oct 7, 2014 9:55:11 GMT
well with the temps over the last 2 weeks dropping 12deg c day (down to 8) and 15 deg c night (down to 5) I'd say where in for some really different weather there is no warmth coming up the gulf stream .. and I can see snow dropping in the next 2 weeks .. just nipping out for my lotto ticket .. I need to get out of Europe fast ..
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Post by acidohm on Oct 7, 2014 12:13:36 GMT
Is this weather in UK a polar vortex? I see this system was in Iceland last week.
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Post by nautonnier on Oct 7, 2014 21:10:39 GMT
Is this weather in UK a polar vortex? I see this system was in Iceland last week. There is a huge low sat off Western Ireland which is sucking air out of Northern Europe circulating it around and sending it back over UK. What used to be called 'Returning Polar Maritime Airmass' normally unstable showery not too cool as it has run over the warm North Atlantic Drift. Except that there appears to be no North Atlantic Drift certainly not warm. So the air is just cold and relatively humid and unstable leading to everyone's favorite weather windy wet with occasionally heavy showers and cold with possibility of sleet on high ground. Not uncommon to get equinoctial gales but colder and wetter than normal.
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Post by Ratty on Oct 9, 2014 7:00:13 GMT
Removed post to obviate my embarrassment ......
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