Further legitimate doubts are being raised about the scale of global warming claimed by the U.K. Met Office, following publication of a damning report into U.S. weather stations. The report found that 96% of the weather stations used by the U.S. weather service NOAA were “corrupted” by the localised effects of urbanisation. The U.S. has one of the largest temperature measuring systems in the world, and information from the stations forms an important part of the Met Office HadCRUT5 database.
Since 2013, the Met Office has boosted recent global warming by 30%, depressed past measurements and abolished the temperature pause from 1998 to 2012 – this pause is still discernible in the accurate satellite and meteorological balloon record. Using the HadCRUT5 database means the Met Office can claim continuing warming and further heat records. Anthony Watts, the author of the report, titled Corrupted Climate Stations, noted that data from the stations that have not been corrupted by faulty placement, “show a rate of warming in the United States reduced by almost half compared to all stations”. With a 96% warm-bias in U.S. temperature measurements, “it is impossible to use any statistical methods to derive an accurate climate trend for the U.S.”, added Watts. The same can, of course, be argued to apply to all global sets that use the corrupted U.S. data.
The corruption is caused by close proximity to asphalt, machinery and other heat-producing, heat-trapping, or heat-accentuating objects. “Placing temperature stations in such locations violates NOAA own published standards, and strongly undermines the legitimacy and magnitude of the official consensus on long-term climate warming trends in the United States,” it says.
Of course the Met Office’s own U.K. temperature measuring is subject to considerable urban heat distortions. During the recent brief heatwave (“feels like an apocalypse,” Piers Morgan), three of the four highest temperatures were recorded at airports including Heathrow, one of the least suitable sites it is possible to imagine. Interestingly, the average temperature for the U.K. last month was 16.6°C, the same as the year before and nearly identical to the 16.5°C of 1976.