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Deciphering year-to-year wiggles in the Keeling Curve

SETI Institute

Tuesday, January 7, 2014 from 12:00 PM to 1:00 PM (PST)

Mountain View, CA

Deciphering year-to-year wiggles in the Keeling Curve

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Event Details

Weile Wang

NASA Ames Research Center

mauna loa observatory

 

The concentration of carbon dioxide in the atmosphere was 315 parts per million by volume (ppm) when Charles Keeling started his measurement at the Mauna Loa Observatory, Hawaii, in 1958. It surpassed 400 ppm on May 9, 2013 for the first time in the 55-year continuous record of measurements. The so-called ‘Keeling curve’ that shows the rapidly increasing atmospheric carbon dioxide concentration since 1958 is one of the most famous and important scientific findings of our time – yet a full and detailed understanding of the curve and its variations is still to be achieved. For instance, the year-to-year variability that appears as the ‘wiggles’ on the Keeling curve have long been linked to variations of the natural climate-carbon system. But questions remain about what (ocean versus land), where (tropics versus mid-high latitudes) and how (e.g., temperature versus precipitation) different drivers affect the observed variability. This presentation reviews the scientific literature on these questions and presents a simple yet robust analysis that points toward the most likely answer.

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When & Where


SETI Institute
189 N Bernardo Ave
Mountain View, CA 94043

Tuesday, January 7, 2014 from 12:00 PM to 1:00 PM (PST)


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SETI Institute

The mission of the SETI Institute is to explore, understand and explain the origin, nature and prevalence of life in the universe.

We believe we are conducting the most profound search in human history — to know our beginnings and our place among the stars.

The SETI Institute is a private, nonprofit organization dedicated to scientific research, education and public outreach.

Every week the SETI Institute hosts a lecture series that is open to the public, provides free PB&J's and gives people a unique opportunity to interact with some of the world's leading space scientists.

For past videos, upcoming events and full event details, go to seti.org/talks.

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