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An editorial was published on 12 September 2013, see Climate 2013, 1(2), 74-75.

A comment was published on 19 September 2013, see Climate 2013, 1(2), 76-83.

Climate 2013, 1(1), 4-11; doi:10.3390/cli1010004
Article

On the Present Halting of Global Warming

Received: 28 January 2013 / Revised: 15 April 2013 / Accepted: 15 April 2013 / Published: 3 May 2013
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Abstract

The rise in global average temperature over the last century has halted since roughly the year 2000, despite the fact that the release of CO2 into the atmosphere is still increasing. It is suggested here that this interruption has been caused by the suspension of the near linear (+ 0.5 °C/100 years or 0.05 °C/10 years) temperature increase over the last two centuries, due to recovery from the Little Ice Age, by a superposed multi-decadal oscillation of a 0.2 °C amplitude and a 50~60 year period, which reached its positive peak in about the year 2000—a halting similar to those that occurred around 1880 and 1940. Because both the near linear change and the multi-decadal oscillation are likely to be natural changes (the recovery from the Little Ice Age (LIA) and an oscillation related to the Pacific Decadal Oscillation (PDO), respectively), they must be carefully subtracted from temperature data before estimating the effects of CO2.
Keywords: global warming; Little Ice Age; multi-decadal oscillation global warming; Little Ice Age; multi-decadal oscillation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Akasofu, S.-I. On the Present Halting of Global Warming. Climate 2013, 1, 4-11.

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