Unstoppable Global Warming Every 1500 Years

New study affirms natural climate change

By —— Bio and Archives--January 25, 2011

Global Warming-Energy-Environment | Comments | Print Friendly | Subscribe | Email Us

CHURCHVILLE, VA—It’s nice when people validate your work. Fred Singer and I—co-authors of Unstoppable Global Warming Every 1500 Years—are currently basking in the glow of a new paper that affirms the earth’s long, moderate, natural climate cycle. The study is by Dr. U.R. Rao, former chair of India’s Space Research Organization. He says solar variations and cosmic rays account for 40 percent of the world’s recent global warming.


Dr. Rao says the data between 1960 and 2005 show lots fewer cosmic rays hitting the earth, due to a periodic expansion of the sun’s magnetic field. The bigger solar magnetic field blocked many of the cosmic rays that would otherwise have hit earth. Fewer cosmic rays hitting the earth meant fewer water droplets shattering in our atmosphere, and thus fewer of the low, wet clouds that deflect solar heat back into space. So the earth warmed.

Fred and I tried to tell the world in 2007 that the moderate 1500-year Dansgaard-Oeschger cycle was the cause of the warming since 1850, based on historic and paleoclimatic evidence. The cosmic ray linkage was put forth in 2008 by Henrik Svensmark of Denmark. The UN’s panel on climate change dismissed that whole approach, claiming the variations in the sun’s irradiance were far too small to account for the rapid warming from 1976–98.

The flaw in the UN reasoning is clear, however. The alarmists claim the global warming since 1976 has been too rapid to be caused by natural forces, and therefore must be man-made. However, the earth’s Industrial Revolution went global after 1945—releasing the first big flush of CO2 emissions. That burst of greenhouse gases should have sharply boosted the earth’s temperatures. Instead, the earth’s temperature declined from 1940–75.

Commenting on Rao’s paper, V. Ramanathan of the U.S.-based Scripps Institute of Oceanography says, “The observed rapid warming trends during the last 40 years cannot be accounted for by trends in [cosmic rays].” But didn’t earth’s warming from 1915–1940, too early to blame on CO2,  move just about as fast for just about as long as the “unnatural” warming from 1976–98?

Did human greenhouse emissions account for the other 60 percent of our Modern Warming? Well, a modern city is fully capable of warming its own temperatures by 7 degrees C or more through expanded brick and blacktop and lost greenery. A huge number of rural weather stations have been dropped from the rolls in recent years, putting our thermometers still more heavily in debt to Urban Heat Islands.

A study by Dr. Eugenia Kalnay of the University of Maryland says 40 percent of our net temperature increase since 1940 was actually caused by expanding urban heat islands and land use changes. Since the official net warming over that period is only about 0.2 degree C, that doesn’t leave much for Al Gore to deplore.

Nor do these studies offer much support for the EPA’s recent finding that global warming presents “public endangerment.” One of EPA’s own senior scientists produced a contrary evaluation, but he’s been retired and his paper has been ignored up by the government and the mass media.

India may be the most scientifically advanced country that refuses to agree the current global warming is man-made. Dr. Rao’s paper has just been accepted by India’s most prestigious science journal, Current Science.


1 )The Hindustan Times January 21, 2011.
2) E. Kalney and M. Cai. “Estimating the Impact of Urbanization and Land Use on U.S. Surface Temperature Trends: Preliminary Report,” Nature 423 (29 May 2003): 528-31.


Only YOU can save CFP from Social Media Suppression. Tweet, Post, Forward, Subscribe or Bookmark us

Dennis Avery -- Bio and Archives | Comments

Dennis Avery is a former U.S. State Department senior analyst and co-author with astrophysicist Fred Singer of Unstoppable Global Warming: Every 1,500 Years

Commenting Policy

Please adhere to our commenting policy to avoid being banned. As a privately owned website, we reserve the right to remove any comment and ban any user at any time.

Comments that contain spam, advertising, vulgarity, threats of violence and death, racism, anti-Semitism, or personal or abusive attacks on other users may be removed and result in a ban.
-- Follow these instructions on registering: