State of the Planet

News from the Columbia Climate School

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The Breathing Ocean

Image: Jaccard et al. (2013) Science
Image: Jaccard et al. (2013) Science

Far south and farther south, where winds are cold and screaming,
Waters churn, and deep below, old sediments lie dreaming.
A million years’ residuum of life and death and dust,
A library of ice ages reposed upon Earth’s crust.
Very finely teased apart, this elemental tale,
On barium and opal deep into the past we sail.
With all the evidence aligned, a pattern brightly blazes:
Descent into an ice age world proceeds in two key phases.
An orchestra with many players ‘tween warm-cold inflecting;
Tiny cells, abyssal flow, great winds … now, who’s directing?

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Further reading:

Two Modes of Change in Southern Ocean Productivity Over the Past Million Years, Jaccard, Hayes et al., Science, 2013

This is one in a series of poems based on science news, written by Katherine Allen, a researcher in geochemistry and paleoclimate at the Lamont-Doherty Earth Observatory. “The Breathing Ocean” first appeared on Allen’s website on March 22, 2013.

Banner featuring a collage of extreme heat images.

Recent record-breaking heat waves have affected communities across the world. The Extreme Heat Workshop will bring together researchers and practitioners to advance the state of knowledge, identify community needs, and develop a framework for evaluating risks with a focus on climate justice. Register by June 15

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