The fabrication of global warming has been a real issue of contention in recent years with much proof of its existence - now with the help of the WMO agency, the proof is irrefutable, artificial warming is significant resulting in a robust overstatement of global warming trends
(click on images to enlarge, source)
Read here. Watts et al. have released a new study that shows, without doubt, that temperature readings from U.S. climate weather stations have been severely contaminated by human factors that artificially increase the thermometer measurements. This research documents that between the contaminated measurements and NOAA's exuberance to adjust all temperatures upward, the artificial warming may be 10 times higher than the actual background natural warming (read below).
Similarly, the global climate weather stations are most definitely likely affected in the same manner. The result would be that there is a huge overstatement of global warming. And that would mean the most recent release of the BEST research is significantly contaminated with bad data - the BEST research just got bitch slapped, big time. (For more bitch slapping, Ross McKitrick unloads with some significant whacks)
From the new Watts et al. study, we learn that by using new WMO-ISO standards for the siting and classifications of weather stations, one can ascertain what factors at a station will produce non-contaminated temperature readings - these non-contaminated stations will produce results reflecting an actual background (be it from solar, cosmic, greenhouse gases, etc.) climate warming/cooling trend. Those factors would include:
1. A weather station that is placed in a true rural area, significantly away from any human materials and influences that would generate an artificial warming environment.
2. A weather station that is not placed at, or near, a rural airport.
3. A weather station that uses the latest MMTS thermometers sited and maintained in a compliant manner.
When these three simple conditions are met, the Watts team found that these high quality stations produced a decadal warming trend of +0.032C degrees - per century, that's a warming of only one-third of a degree, which is a fraction of the "officially" reported U.S. warming (from above Powerpoint slide).
In contrast, if the temperature dataset includes older thermometers that are poorly maintained, plus being sited in a non-compliant manner, plus being located at both urban and rural airports, the per century warming jumps to a 2.5 degrees per century trend (see adjacent Powerpoint slide) - that's an artificial warming in excess of 7.5 times the compliant rural site using the latest MMTS technology.
Unfortunately, because of gross stupidity or gross negligence or other reasons, the U.S. climate research agencies have placed most climate weather stations in areas that are not truly rural in environment (especially the airports and urban locations); that are poorly sited by being too close to human materials and heat generating equipment; that are poorly maintained; and, that use older thermometer technology.
Compounding this problem are the subsequent "quality control" adjustments made by NOAA to the U.S. temperature weather station data. For example, NOAA will take an artificially high reading from a poorly maintained and sited station at an airport and adjust it upward (not lower); they then take the temperature reading from a nearby rural, perfectly sited and maintained thermometer and adjust its readings upward to match the previously adjusted temperature reading from the non-compliant airport location. This is how NOAA fabricates false warming trends across the entire U.S.
How false? Well, magically NOAA turns an inflated 2.5C degree per century trend into a 3.1C degree trend via their unique style of "quality control" adjustments (see 2nd Powerpoint slide above). That represents almost a 10 times increase over a perfectly sited, perfectly maintained rural climate weather station.
This is what Watts and associates discovered when applying the newest WMO-ISO standards/classification to the U.S. climate network and temperature dataset. The same issues that drastically increase a natural warming trend across the U.S. applies to the global climate network and temperature datasets.
This means that the current stated global warming trend is very likely to be overstated by at least 2 to 3 times (at some of the GHCN sites, the overstatement may reach 10 times greater too), including the new BEST global temperatures. Until BEST and the other climate research agencies apply the strictest WMO standards to their datasets, at best, the "significant" global warming they report is bogus, if not negligently fraudulent.