People send me stuff.
From the Journal of Atmospheric and Solar-Terrestrial Physics April 2011, these claims:
- Atmospheric nuclear explosions induced the stagnation in global warming in the mid 20th century.
- Atmospheric nuclear explosions can be regarded as full-scale in situ tests for nuclear winter.
- Global warming will be better predicted by considering atmospheric nuclear explosions’ effects.
The paper is: Fujii, Yoshiaki, 2011: The role of atmospheric nuclear explosions on the stagnation of global warming in the mid 20th century
Here’s the abstract, the HadCRUT -vs- nukes graph follows:
“This study suggests that the cause of the stagnation in global warming in the mid 20th century was the atmospheric nuclear explosions detonated between 1945 and 1980. The estimated GST drop due to fine dust from the actual atmospheric nuclear explosions based on the published simulation results by other researchers (a single column model and Atmosphere-Ocean General Circulation Model) has served to explain the stagnation in global warming. Atmospheric nuclear explosions can be regarded as full-scale in situ tests for nuclear winter. The non-negligible amount of GST drop from the actual atmospheric explosions suggests that nuclear winter is not just a theory but has actually occurred, albeit on a small scale. The accuracy of the simulations of GST by IPCC would also be improved significantly by introducing the influence of fine dust from the actual atmospheric nuclear explosions into their climate models; thus, global warming behavior could be more accurately predicted.”
Somewhere, Carl Sagan is laughing.
Here’s a composite overlay graph of HadCRUT3 global temperatures from 1945-2010 via WoodforTrees.org onto the bar graph of known nuclear explosions for the same period from Wikipedia:
If the premise is true, one wonders how Trinity, Nagasaki, and Hiroshima started the sharp downtrend in global temperature in 1945, followed by Crossroads in 1946. These were all quite small in comparison to what followed.
Here’s the list of nuclear tests.
UPDATE: As Mike Lorrey points out in comments, after the Limited Test Ban Treaty of 1963, nuclear tests were conducted underground. How then did the cooling of the 1970’s occur if the premise presented in this peer reviewed paper is true? I’ve updated the graph above to reflect this.