How not to measure temperature, part 76

Oberlin_Looking_East

Click for the Oberlin image gallery

This is the USHCN station of record for Oberlin KS. COOP # 145906 It was installed at this location in March 2008.

The idea behind the surface network is to measure the near surface temperature. Unfortunately, this one does it “nearer” to the surface than others.

Thanks to surfacestations volunteer Robert Edward Watson for taking this photo. Here is what he wrote about it in the station survey form:

Height of shelter above local surface: 40″ Last pole broke, curator

is waiting for government guys to come and fix.

The standard observing height is 1.5 meters (~ 60 inches). At 40 inches, this one is ~ 20 inches too short.

The GISTEMP plot for Oberlin has a curious step at the end:

oberline-giss-station-plot

Click for original source graph from NASA GISS

What is really curious about this USHCN station is the number of station move it has experienced in Oberlin since 1998. As indicated by the NCDC MMS database which tracks the location, it seems like this station has been a veritable hot potato:

oberlin-location-history-520

Click for full sized table

I count seven locations since 1996. The MMTS was introduced in 1986 and this one in the photo looks a bit careworn. It kind of make you wonder if they keep cutting down the pole height for some reason with each location, because there is certainly no good reason for the MMTS post to be that short.

As we know, the closer to the ground the near surface temperature measurement is, the higher will be the average between the Tmax and Tmin.

Clearly the data quality is getting the short shrift with this installation and the constant moves. Each move places the sensor in a totally different environment. Sorting out the signal from the biases introduced by each new environment is not an easy task. In fact without knowing this history of each location, it may well be impossible.

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H.R.
November 26, 2008 8:34 am

DocWat (21:36:58) :
Thanks for answering my questions I asked at the beginning of the comment thread.
The one that didn’t get answered directly is whether or not the “government guys” (love it!) choose the site or whether sites are chosen because someone volunteers. Looks to me from your narrative that it’s a combination of both, but that a willing and reliable volunteer trumps insistence on a a suitable site.

Steve Carson
November 26, 2008 10:26 am

Not directly on topic, but I’ve been following this subject with great interest for some time and I’m thinking of putting together a temperature website.
Can anyone point me to the best resource for where the GISS/GHCN weather stations are actually located, what area they are presumed to represent and how to get the current and any previous month’s summary data (mean temp, min temp, max temp)? Would really appreciate the assistance. Thanks.

November 26, 2008 2:41 pm

Tilo:
Has anyone from this forum made an attempt to have a real dialog with the Real Climate people about the issues that they bring up in their threads.
Yep, I just tried today, in the GCM FAQ thread. here is what I posted:
—-
Physics-based models on the other hand, try to capture the real physical cause of any relationship, which hopefully are understood at a deeper level. Since those fundamentals are not likely to change in the future, the anticipation of a successful prediction is higher.
There seems to an awful lot of faith in models here, simply because they are physics based.
It is worth noting that until not too long ago, physics based models had determined bumble bees absolutely cannot fly. And that was for something so simple a bug could do it.
—-
Regarding “hindcasting”. Is there any model that given the starting conditions of, say, 1700, and altering the forcings (e.g. changing CO2, sun intensity, aerosols) produces the climate of today?
—-
Regarding models and their predictions. I got curious about Alaska’s climate, since it is where I live, and where nearly every minute of 2008 has broken coldest-ever records.
This fifty year study, performed by meteorologists who could in no way be described as “denialists”, amounts to a coin toss on GCM predictions: the data confirm as many as it refutes.
Additionally, given the magnitude of the temperature changes, excluding the area immediately around Fairbanks (see Fig 4 – UHI, anyone?), the average increase over 50 years can be no more than 1.6 C.
And maybe not even that much. The University of Alaska, Fairbanks, put together Alaskan Arctic temperature data for all of recorded history. In other words, 133 out of the last 141 years (the study was finished in 2000).
From that I learned Arctic temperatures have risen 1.2 deg C, or about 0.094 degrees per decade. Looking only at the 20th century, though, and that increase amounts to all of 0.05 degrees per decade. The warmest interval over the period was in the 1930s and 1940s.
How can any model, except through post-hoc reasoning, conclude that small amount of change is CO2 driven, instead of the natural variation of a climate that is never static?
—–
Which went right into the bit bucket.
BTW, and I don’t want to be guilty of threadjacking, but while Googling around, I came upon this Upper Ocean Temperature Variability in the Northeast Pacific Ocean: Is It an Indicator of Global Warming?
In a nutshell: No.

pkatt
November 26, 2008 3:52 pm

Oh sorry:) I didnt realize that I just linked to the one paper.. for author and all that try this link. http://www.columbia.edu/~jeh1/ 🙂 I think you wont be supprised who wrote it.

Bobby Lane
November 26, 2008 7:00 pm

I don’t know much about legalities and the technical niceties of the law, but with all Anthony’s work so far plus that yet to come, there has to be some means of prosecuting the agency/agencies responsible for this. Politicians will just brush it under the rug. It must go to court. Think of all the pronouncements and policies that have been made down through the years based on what more and more appears to be a completely unreliable and undecipherable temperature history. This station is just one case study of that apparent fact. Seriously, with all that is being contemplated by the ‘Green’ movement, things like this have to border on criminal negligence or something similar. It is absolutely outrageous. If a DA had a case with the evidence mounting like this, he’d be licking his chops. Once all the data gets in and the conclusions are drawn, and air tight the key ones at least must be, then this ought to be brought before a judge if it is possible. It deserves no lesser stage and no lesser hearing.

evanjones
Editor
November 26, 2008 8:27 pm

Steve Carson:
STATION GRAPHS, etc. (This should lead you to the graphs and other data)
http://data.giss.nasa.gov/gistemp/station_data/
NOAA STATION LOCATIONS
http://mi3.ncdc.noaa.gov/mi3report/mshr/mshr_full.txt