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New Paper in Science: Sea level 81,000 years ago was 1 meter higher while CO2 was lower February 12, 2010

Posted by honestclimate in Discussions.
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New Paper in Science: Sea level 81,000 years ago was 1 meter higher while CO2 was lower

Via Watts Up With That, February 11, 2010

This Week in SCIENCE, Volume 327, Issue 5967, Food Security dated February 12 2010, is now available at:

http://www.sciencemag.org/content/vol327/issue5967/twis.dtl

Standing High (requires free registration to view)

Figure 1Fig. 1 Encrusted speleothems at various levels in caves from Mallorca. (A) Geologic map of Mallorca (10) and location of sampled caves (red dots). (B) Schematic cross-section through a coastal cave in Mallorca showing multiple carbonate encrustation levels. (C and D) Present-day and paleo levels of encrusted speleothems related to higher (E) and lower (F) sea-level stands. (G) Typical morphology for tidal range–related carbonate encrustation (size of speleothem, 20 cm). (H) Bathymetric map of the western Mediterranean region and the predicted present-day rate of sea-level change due to GIA [adapted from (15)

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Comments»

1. Bush bunny - February 14, 2010

When ice ages are at their peak we have much lower sea levels
e.g. The Mediterranean might be a series of ponds, lakes and swamps and people could walk across from Africa particularly North Africa And the opposite happens in interglacial periods. But to say they will get much higher than today or the last
200 years other than say a meter during king tides (caused by the moon). Should we enter another mini ice age then what we should be
concerned about is that (depending on which hemisphere we live in,
and the Northern Hemisphere is the one most effected) then see
how the change to agriculture and fishing (remember) higher sea
levels encourage fishing, effects human activity generally and how
they survived.

In my opinion, I don’t think you can make a carte blanch scientific
survey on climate, when the Southern Hemisphere is in summer
and Northern in Winter, and that other elements, like cosmic radiation, solar activity, ocean currents and possibly big volcanic
eruptions (terrestrial and under the sea) can effect our climate or
create extremes. Parts of the Sahara were inhabited by hunter and gatherers, now they are desert. And why, they are not getting the
rain they used to experience in the not too distant past geologically
and palaeoanthropologically speaking.


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