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Don Easterbrook: Global Warming (Since 1977) is Over
The following Abstract entitled, ‘Solar Influence on Recurring Global, Decadal, Climate Cycles Recorded by Glacial Fluctuations, Ice Cores, Sea Surface Temperatures, and Historic Measurements Over the Past Millennium’ by Don Easterbrook, is from the American Geophysical Union (AGU) Annual Fall Meeting in San Francisco, 15-19 December 2008:
“GLOBAL, cyclic, decadal, climate patterns can be traced over the past millennium in glacier fluctuations, oxygen isotope ratios in ice cores, sea surface temperatures, and historic observations. The recurring climate cycles clearly show that natural climatic warming and cooling have occurred many times, long before increases in anthropogenic atmospheric CO2 levels. The Medieval Warm Period and Little Ice Age are well known examples of such climate changes, but in addition, at least 23 periods of climatic warming and cooling have occurred in the past 500 years. Each period of warming or cooling lasted about 25-30 years (average 27 years). Two cycles of global warming and two of global cooling have occurred during the past century, and the global cooling that has occurred since 1998 is exactly in phase with the long term pattern. Global cooling occurred from 1880 to ~1915; global warming occurred from ~1915 to ~1945; global cooling occurred from ~1945-1977;, global warming occurred from 1977 to 1998; and global cooling has occurred since 1998. All of these global climate changes show exceptionally good correlation with solar variation since the Little Ice Age 400 years ago.
The IPCC predicted global warming of 0.6° C (1° F) by 2011 and 1.2° C (2° F) by 2038, whereas Easterbrook (2001) predicted the beginning of global cooling by 2007 (± 3–5 yrs) and cooling of about 0.3–0.5° C until ~2035. The predicted cooling seems to have already begun. Recent measurements of global temperatures suggest a gradual cooling trend since 1998 and 2007–2008 was a year of sharp global cooling. The cooling trend will likely continue as the sun enters a cycle of lower irradiance and the Pacific Ocean changed from its warm mode to its cool mode.
Comparisons of historic global climate warming and cooling, glacial fluctuations, changes in warm/cool mode of the Pacific Decadal Oscillation (PDO) and the Atlantic Multidecadal Oscillation (AMO), and sun spot activity over the past century show strong correlations and provide a solid data base for future climate change projections. The announcement by NASA that the Pacific Decadal Oscillation (PDO) had shifted to its cool phase is right on schedule as predicted by past climate and PDO changes (Easterbrook, 2001, 2006, 2007) and coincides with recent solar variations. The PDO typically lasts 25–30 years, virtually assuring several decades of global cooling. The IPCC predictions of global temperatures 1° F warmer by 2011, 2° F warmer by 2038, and 10° F by 2100 stand little chance of being correct. “Global warming” (i.e., the warming since 1977) is over.”
Don J Easterbrook is Professor Emeritus at Western Washington University, Dept. of Geology, Bellingham, WA 98225, United States
October 30th, 2009 at 11:49 am
Easterbrook is one of the few who know what they’re talking about in the climate debate. CO2 is a relatively minor factor, and the most crucial effect, the geopulsation cycle, has not even been cranked into the equations yet. (See Roots of Cataclysm, Algora Publ.NY 2009)