Feb 21 2008
More Lampasas, TX Corrected Data
Hopefully this will by my last post on the Lampasas surface station. This will be a short post, since I think the figures speak for themselves. However, I will detail the methodology in case anyone wishes to have a look-see themselves. But first, when I looked at the “raw” yearly temperature data, this is what I see for Lampasas. There seems to be a problem with either there being lots of outliers being taken out, or the observer not getting the data to the proper people. There are many missing data in the monthly time series as well, but it’s easier to work around that.
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I looked at 5 nearby stations: Albany, Ballinger, Blanco, Dublin, and Llano.
A composite anomaly time series was computed by first taking the arithmetic mean of the raw time series of the 5 stations at each time steps. Values reported as missing did not influence the mean. Monthly averages were computed based upon the entire composite time series. These averages were then subtracted from the composite time series to obtain the composite anomaly series.
A similar method was used to compute the anomaly time series for Lampasas. The Lampasas anomaly time series will have more missing values because it was not averaged with surrounding stations.
Finally, the same method was used on the Filnet data.
The red dashed line represents the time of the station move.
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This shows the raw minimum data. It is not evident that there was a station move in 2000. There is a much larger sudden temperature change in late 2005-early 2006. There was a change noted in the station history (not a move) that is at this time.
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Here we see a definite upward jump in 2000, and another jump downward in 2006.
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I think I somehow read the data in wrong here. I’m not sure how that’s possible since the files should be in the same format. But it would make sense if the time segments with missing data lined up. If that were the case, it would appear that there was a smaller step at 2000.
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Both the min and max filnet data show the same jump as the raw data.
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It’s harder to see the jump in the mean filnet data. Part of that is because of my mistake reading in the data (I think). Another reason is the jump, even in the raw data, is much smaller than the min and the max.
I don’t have time tonight to check that possible mistake in the mean data, but I’ll try to find time tomorrow.
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6 Responses to “More Lampasas, TX Corrected Data”
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See http://www.climateaudit.org/?p=2746#comment-215015 where I’ve calculated TOBS and filnet differences between Lampasas and the 5-station average, each yielding pronounced hockey sticks precisely at the station move. It looks like your mean collation has an error somewhere as you thought might be the case.
Atmoz, you have my e-mail address. I would like to know why you are so desparate to defend the warmenizers. Seriously. I would like to have a private discussion with you about this.
Because, to me, I see the Hansens, Gores and Suzukis of this world getting ever more hysterical as the sea waves of rationality erode their sand castles of power. You appear to be a mere foot-soldier in this ideological war. I suspect you tire of this role and would like to get that internship before the whole shit hits the very large fan. Best way is to confess, brother, come to reality. Forego the false prophets of doom.
Atmoz, you should really post under your real name; it is shameful that you try to represent yourself as an authority on any topic. Truly, ask yourself, what would Richard Feynman think of you?
[Reply: My real name is not hard to figure out. Think of it as a test. If you fail, you probably shouldn't be on the Internet unsupervised. And I never claimed to be an authority.]
Sanjac, in the age of easy internet searches it’s reasonable for someone who’s a professional in climate science or a related field to use a pseudonym. If a prospective employer were to do a google search on atmoz’s name, it wouldn’t be good for them to be unable to find references to atmoz’s professional activities due to the blizzard of hits related to this blog. As atmoz says, it’s not hard to figure out his real name, and the same is true for Eli Rabbett (pretty easy) or Tamino (harder but still doable).
[...] is the third occasion [Lampasas, TX; Miami, AZ] where SHAP corrections have been documented to not fully account for station moves. [...]
[...] the adjustments for station moves does not work properly. See blog posts related to the stations at Lampasas, TX, Miami, AZ, and Saguache, CO. This post will show that affects recorded in the station history, but [...]