The US has cooled in the past 11 years at a rate of minus 7.3F/century, or -4C/century. Global Warming since the end of the Little Ice Age has increased temperatures at an 0.8C/century rate. We are cooling at 5x the rate of prior warming.
11 years may seem too short to derive a trend, but note that the GW hysteria came from trendlines over less than 20 years: 1979 - 1998.
The anecdotes that made GW so compelling - glaciers, polar bears, hurricanes, etc.- have begun to go the other way. Chicago expects its earliest snowfall ever on record this weekend. Ski areas are gearing up for a very early start to ski season. The Antarctic is suffering its slowest summer melt in 30 years, and the Arctic is coming back stronger than expected. Spokane is suffering an unusually early polar blast. Last year was its third snowiest winter; this year may be the record setter. Accuweather reports an unusually early polar front sweeping into the upper midwest, with snow and freezing temperatures that are "almost unheard of so early in the season." UPDATE 10/18: over 4500 cold records set in early October.
Satellite date since 1979 pegs the overall rise at only 0.42C essentially 0 in 30 years. The chart shows we actually dipped below the 1979 level last year, and the updated chart from Roy Spencer below it shows we have just returned there. The recent pop up since then is due to an El Nino, which is now weakening.
If this continues, the red line (moving average to smooth monthly fluctuations) may go back to even next year - no warming trend over the past 30 years. In any event, there is a clear downtrend since 1998.
This cooling trend is also confirmed by the ARGO sea buoy data, which have shown oceans cooling since 2003. The ARGO buoys float in the currents, periodically dive deep, take a reading, head back to the surface, and radio the data home.
Sea surface temperatures are dropping fairly fast. The most recent ocean temperature readings from a variety of sources is shown in the third chart,commentary here.
This chart is from the Arctic and helps explain why it is repairing itself so quickly. Other graphs show similar drops, except in the south Pacific where a mild El Nino has begun.
In a more humorous vein, the Gore Effect has just struck in Wisconsin: he spoke yesterday in Madison amidst the surprising cold snap that is sweeping the upper midwest. The Gore Effect is a well recognized phenomenon that seemingly where-ever Al Gore goes to speak on Global Warming, a shocking cold spell hits the city. Over 20 such incidents have been recorded. Wikipedia used to have an entry on this, but it was deleted for unclear reasons. The Gore Effect has made the Urban Dictionary.
A stunning list of recent cold anecdotes is below the fold from a recent DIGG post and comment.