The March 1, 1975 edition of Science News included the graph below. It showed that Northern Hemisphere temperatures dropped by 0.4 degrees between 1940 and 1970.
The current GISS northern hemisphere graph (1900-present) is shown below. It shows a smaller drop.
The image below shows the 1975 graph (green) overlaid on the GISS graph. Both graphs have the same scale. The 1975 graph is offset by 0.25 degrees.
Note that both graphs agree closely from 1990 to 1940. But GISS shows a much smaller cooling from 1940 to 1970. The latitude bands are not identical, but the missing tropics show less cooling- which would make the discrepancy larger if they were included in the GISS graph.
Weekly Romm Forecast
September 1, 2010 by stevengoddardLook for something along the lines of “Heavy snow, followed by heat, followed by a hurricane. Proof of global warming.“
James Hansen Compares Summer Heat Waves
September 1, 2010 by stevengoddardDr Hansen wrote :
What’s happening to our climate? Was the heat wave and drought in the Eastern United States in 1999 a sign of global warming?
Empirical evidence does not lend much support to the notion that climate is headed precipitately toward more extreme heat and drought. The drought of 1999 covered a smaller area than the 1988 drought, when the Mississippi almost dried up. And 1988 was a temporary inconvenience as compared with repeated droughts during the 1930s “Dust Bowl” that caused an exodus from the prairies, as chronicled in Steinbeck’s Grapes of Wrath.
http://www.giss.nasa.gov/research/briefs/hansen_07/
Go figure ….. Amazing how another decade without warming has changed his mind.
NSIDC Increases Their Arctic Forecast
September 1, 2010 by stevengoddardDuring July, NSIDC was forecasting a September minimum of 4.74 million km²
http://www.arcus.org/search/seaiceoutlook/2010/july
In the August report, they have upped their forecast to 5.0 million km². This is just below my submitted estimate of 5.1 for the minimum, down from my June forecast of 5.5 million.
http://www.arcus.org/search/seaiceoutlook/2010/august
In June, NSIDC also forecast 5.5, which was identical to my June forecast.
Different methodologies, but we seem to be converging on similar numbers.
Welcome
August 31, 2010 by stevengoddardThanks for the nice response today from everyone. I plan to cover some new and interesting topics over the next few weeks/months/years. Some antagonists will no doubt be pleasantly surprised by my views on the environment.
Please tell all your friends!
