"Meteorologist Anthony Watts has done extensive research on just how poor the weather reporting stations really are having sampled over a 1,000 of the U.S. weather reporting stations (www.surfacestations.org).  He has found that 89% of NOAA's weather reporting stations DO NOT MEET THEIR OWN CRITERIA AS SUITABLE REPORTING STATIONS!  More amazing is that 11% of all U.S. weather reporting stations have an error of >5°C and 58% with error over 2°C based on poor site locations like above.  He also found that the color of the temperature sensor shelter also added 2-4°C error (too warm) depending on whether the shelter was painted in a latex white paint, whitewash or bare wood." - Amit Patel from Bookmarklet

Is this suggesting that global warming is measurement error? - Clare Dibble

It's a kooky site. They claim to have daily weather forecasts that go out an entire year. They also claim to have lots of big clients (http://www.weathertrends360.com/Blog...). And yes, they seem to be global warming deniers, and point to the Pacific Decadal Oscillation instead. - Amit Patel

Hm, in 2010 they wrote: “So, the forecast for 2011 is the coldest in 7 years for the U.S. and coldest in 15 years for the globe. PDO will have at least 15-20 more years in the negative cold phase so all those man-made global warming "deniers" will have plenty of data to say I told you so in the decades ahead! While hot periods and droughts will occur from time-to-time, the predominant global theme is colder, more Winter snowfall, expanding permanent ice and fewer hurricanes.” - Amit Patel

Wunderground says, “The year 2011 was the tenth warmest year on record for the globe, but the warmest year on record when a La Niña event was present”. - Amit Patel