EcoAlert: Mega-Drought! A Prelude to Future Climate Change?

A new analysis of deep lake sediment suggests that the breakup and melting of massive icebergs in the North Atlantic may have triggered one of the most widespread and intense droughts in the past 50,000 years known as Heinrich Stadial 1.  The megadrought, which struck between 15,000 to 18,000 years ago, dried up large expanses of the monsoon regions of Africa and Asia, including Lake Victoria, the world's largest tropical lake with severe consequences for Paleolithic cultures.

Curt Stager of Paul Smith's College in New York, together with an international team of researchers, concluded that Henrich 1 corresponded with larger climatic changes near the equator. Sea surface cooling may have weakened rain bands in the Afro-Asian tropics and pushed them farther south. Microscopic crystals from grass in Lake Victoria, suggest these conditions favored the spread of grassland over forest. While the exact cause of this extreme drought is still unclear, these clues from the deep could teach climatologists about the possible repercussions of climate change to come.

The Daily Galaxy via Science, DOI: 10.1126/science.1198322

Comments

[SiliconJon]

Good grief, what where we doing 15-18k years ago to cause this? And the one prior to this, ~50k+ years ago, too? I'm all up for better safe than sorry, but that doesn't translate into better an ignorant, unquestioning slave to all the oppression suggested upon me.

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So what happened here at this site? It seemed that a year or two ago when I first found this site it had some oddly partisan denial to some environmental studies (Limbaugh style), and now it's swayed to oddly partisan unquestioned support of the most ridiculous of correlation attempts in support of ignoring the vastly more toxic and damaging pollutions in exchange for a full molestation of CO2 out-breath (Gore style).

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here! here! SiliconHon. I second the motion.

[Augur]

here! here! SiliconHon. I second the motion.

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The area of ocean is descending!Worried about our life!!

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The area of ocean is descending all the time!!

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The environment of our life is much more poor!We should catch up with a means to solve problem

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It sounds so terrible . How can the Mega-drought happened ?! The human being need to do something good for the nature.