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Old 08-29-2013, 01:15 PM
 
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Default Ice Age temperatures?

Is there a rough formula to figure out what the climate of a city (modern day) would have been like during the last ice age? I assume that areas closer to the pole would be affected disproportionately due to the ice sheet. I'm more interested in subtropical and tropical regions.
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Old 08-29-2013, 01:31 PM
 
Location: Western Massachusetts
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I don't think there are consistent patterns of change, it'd vary depending on location, though perhaps the tropics had a consistent change. Buried vegetation / chemistry data is the only record, and they're patchy. Combining with climate models would give a rough idea. I'll do an internet search.
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Old 08-29-2013, 01:34 PM
 
Location: Western Massachusetts
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Hmm. It says tropical temperatures were only 2.2°C below today

Climate of the last Ice Age

The subtropics would likely have very different weather patterns, as there would be a much stronger north-south temperature gradient. Stronger storms, but less moisture available.
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Old 08-29-2013, 01:37 PM
 
Location: Western Massachusetts
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Here's sea surface temperature changes:



more details:

File:CLIMAP.jpg - Wikimedia Commons

The warming in some spots is a bit bizarre.
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Old 08-29-2013, 01:37 PM
 
Location: North West Northern Ireland.
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I think it was -70c.

Tbh i think it would be liveable.
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Old 08-29-2013, 01:48 PM
 
Location: CT - close to coast
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Quote:
Originally Posted by nei View Post
Hmm. It says tropical temperatures were only 2.2°C below today
.
I read that tropics or areas around the equator weren't that big a deal during the Ice age. Some people think Ice ages mean the entire planet covered in ice, not true. There were very warm places on the planet during. Also... for the areas involved in the temp drop, the dailies will be more interesting to see rather than a yearly or decade number. Unfortunetly we'll never know what the temp was on December 27, Yr350Ma in Boston. Meaning, looking at a 2° drop globally is substantial but doesn't tell us much, but looking at a daily temp of -180°F in Boston will. lol

I'm sure there's something about an estimate of what temps were like. I'm curious myself
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Old 08-29-2013, 01:52 PM
 
Location: CT - close to coast
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Chart of global temps over the years.



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Old 08-29-2013, 01:54 PM
 
Location: Western Massachusetts
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Here's the average of climate models from PMIP. Contour lines are too wide for the subtropics, but you get the picture. December, January and February change:



Summer (defined as June-September) change:

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Old 08-29-2013, 01:56 PM
 
Location: Western Massachusetts
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Looks like the Deep South cooled by 5-10°C in winter, 2-5°C in summer.
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Old 08-29-2013, 02:22 PM
 
Location: Memphisippi
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That would be amazing
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