Last night I watched "The Great Global Warming Swindle" at a public meeting in Minnetonka, MN.
The meeting was held at the Minnetonka Community Education center. Mr. Jeff Wiita of Minnetonka gave a PowerPoint presentation disputing global warming. There was insufficient time for counter discussion. I feel the public was greatly misinformed on the seriousness of global warming.
In the video, John Christy and Richard Litzen claimed that greenhouse warming is insignficant because of less warming seen in mid-levels of the atmosphere compared to more warming near the surface.
However, less albedo over snow-free areas has contributed to strong warming near the surface in winter and early spring, in the northern Great Plains and Midwest. Strong February warming has been especially evident at climate stations in MT, ND and MN. The importance of less albedo due to shorter snow cover periods discounts the arguments by Christy and Litzen and strengthens the case that much of the global warming is greenhouse driven. A decrease in snow cover and albedo throughout the Great Plains and Midwest also helps explain why warming in the month of February has been especially sharp compared to other months.
Mr. Wiita made comments on views by TV meteorologists Mike Fairbone (WCCO), Dave Dahl (KSTP) and Paul Douglas (previously at WCCO).
A handout was made available on "WCCO meteorologist: Global warming 'extremism' uses 'squishy science'.
I provided Mr. Litkin with copies of an article about the reseach work of Dr. Lee Frelich, University of Minnesota, and work that I've done on earlier snowmelt runoff & MN February temperatures.
Plots of earlier snowmelt runoff & temperatures at Minnesota climate stations:
Earlier in the Year Snowmelt Runoff and Increasing Dewpoints for Rivers in ND, MN and WI
Playing With Fire
11/5/2008 by Greg Breining:
"The Great Global Warming Swindle" - WAGTV
WCCO meteorologist: Global warming 'extremism' uses 'squishy science'
May 20, 2008 by Paul Walsh, Star Tribune (handout at
Global Cooling or Global Warming?
Minnetonka Community Education