Category Archives: Attribution

Nature Unbound III: Holocene climate variability (Part A)

Posted on April 30, 2017 | 119 comments

by Javier

First in a two part series on Holocene climate variability.

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119 Comments

Posted in Attribution, Data and observations

Nature Unbound II: The Dansgaard- Oeschger Cycle

Posted on February 17, 2017 | 226 comments

by Javier

Dansgaard-Oeschger (D-O) events are the most dramatic and frequent abrupt climate change events in the geological record. They are usually explained as the result of an Atlantic Ocean salinity oscillation paced by internal variability. Available evidence however supports that they are the result of an externally paced oceanic-sea ice interaction in the Norwegian Sea. A lunisolar tidal cycle provides an unsupported hypothesis that explains all of the known evidence for the 1470-year pacing and the triggering mechanism for D-O oscillations.

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226 Comments

Posted in Attribution

Prospects for a Prolonged Slowdown in Global Warming in the Early 21st Century

Posted on November 30, 2016 | 274 comments

by Nic Lewis

[W]e estimate that the warming slowdown (< 0.1 K/decade trend beginning in 1998) could persist, due to internal variability cooling, through 2020, 2025 or 2030 with probabilities 16%, 11%, and 6%, respectively. – Knutson et al.

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274 Comments

Posted in Attribution, climate models

Nature Unbound I: The Glacial Cycle

Posted on October 24, 2016 | 269 comments

by Javier

Insights into the debate on whether the Holocene will be long or short.

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269 Comments

Posted in Attribution

What is the relationship between Arctic sea ice decline and Eurasian cold winters?

Posted on October 11, 2016 | 116 comments

by Judith Curry

We conclude that the observed cooling over central Eurasia was probably due to a sea-ice-independent internally generated circulation pattern ensconced over, and nearby, the Barents–Kara Sea since the 1980s. — McCusker et al.

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116 Comments

Posted in Attribution, Polar regions

Dust deposition on ice sheets: a mechanism for termination of ice ages?

Posted on October 2, 2016 | 398 comments

by Donald Rapp

In a recent paper, Ellis and Palmer (2016) proposed that deposition of dust on giant ice sheets, thus reducing their albedo, was a principal factor in the termination of Ice Ages over the past 800 kyrs.

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398 Comments

Posted in Attribution, Sensitivity & feedbacks

Assessing the causes of early industrial-era warming

Posted on September 1, 2016 | 171 comments

by Nic Lewis

Was early onset industrial-era warming anthropogenic, as Abram et al. claim?

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171 Comments

Posted in Attribution