Anthony Watts writes:
The picture above comes to me courtesy of Gary Kobes, of the US Coast Guard. It is the temperature sensor at the climate station of record in Aberdeen, WA It is located at the sewage treatment plant. Note the sign on the support post. Note also the temperature shelter plates are clogged with some dark matter, what I’m not sure.
Gary writes: The general location is about 300-400 feet north of Grays Harbor—the body of water. The sewage plant is located in the middle of an industrial area. The sewage plant lies between the site and the harbor generally on the south. The heavy construction company’s yard building and equipment are to the east. Weyerhaeuser has a log yard to the west. The northern boundary of the site is a railway and on the far side is an area of light industrial buildings.
The measuring head is 6′ above the ground. It is about 25′ from the office building in the background. It is surrounded on three sides—the tree and out building about 75” to the southeast, the office building 25′ to the southwest and the #1 sewage digester and processing tank 90′ to the northwest—and sheltered from the three primary prevailing directions of wind in the area. The measuring head has a 25′ wide strip of grass on the southwest side and a concrete sidewalk and asphalt parking lot to the northeast.
Nothing like convenient parking next to a weather station, why I’ll bet those hot automobile radiators only affect the temperature a few degrees, not to worry.
This USHCN station is used in the GISTEMP database to calculate future trends in computer driven climate models. You can see it here:
I don’t know about you, but I think something smells about the data.
Here are a few plots from Aberdeen for context. Here are 7 versions of the Aberdeen series; Anthony has shown the GISS unadjusted version, which is pretty much identical to the USHCN adjusted and GHCN adjusted versions, which are probably what are used in CRU – though only the Shadow knows what CRU does. The GISS adjusted version allows for a substantial UHI effect – see difference between red and other series.
Here is a plot showing adjustments in a format that I’ve shown before: USHCN Raw- USHCN Adjusted; USHCN Adjusted – GISS Raw; GISS Raw – GISS Adjusted ; thus USHCN Raw – GISS Adjusted. You see that the UHI allowance between early 20th century and modern values is up to 1 deg C, notwithstanding Parker, but look at the attenuation in the late 19th century.
BTW in response to a question, Aberdeen shifted to MMTS in 1985. For some reason, Aberdeen station history is not at the MI3 site (why not?) but is decodable from http://cdiac.ornl.gov/ftp/ushcn_monthly/station_history .