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New USGS study shows heat retaining concrete and asphalt have encroached upon US Climate Stations

Anthony Watts one week ago at WUWT: "In this study, they have observed over 32% of the USHCN stations exhibited an increase in impervious surface area of ⩾20% between 2001 and 2011."

Actual article's abstract: "Over 32% of the USHCN stations exhibited an increase in [impervious surface area] ISA of ⩾20% between 2001 and 2011 for at least 1% of the grid cells within a 100 m radius of the station."

It would be difficult to argue Anthony Watts did not read the abstract carefully enough. He claims he was reviewer of the manuscript.

Comments

  • Victor, I'm puzzling over the difference between the two quotes.  I think I understand it, but only in principle and I don't want to go to WUWT to get the whole picture.  Could you spell out Anthony's claim vs. how it plays out in actual area percentages.
  • It is a complicated formulation: a percentage, more than and at least, all in one sentence.

    For this group of 32% of stations, in the best case only 1% of grid cells (small subareas around the station) would have a 20% increase in paved areas, while Watts claims that the entire area around the station has at least a 20% increase.
  • Yeah about what I was thinking.
    Now I don't know, but I would be surprised if the observers and processors of each station's data are aware of those changes and have made appropriate adjustments to their measurements.  Although I imagine Anthony would remark that those "manipulations" simply prove his point that its all a hoax.

    That is is point?  Isn't it?  Or does he even have a point these days?

    For me it's beyond comprehension that this sort of nonsense continues to gobble up so much bandwidth, especially given incoming extreme weather events that now come with obligatory damage reports - guess we got the Murdochs and Kochs and too many apathetic 'liberals/progressives/rationalists' to thank.
  • Incidentally,  http://whatsupwiththatwatts.blogspot.com/2016/10/whats-point-of-voting.html
                                                                                      ;)

  • The observers do not adjust the data. They just note down the reading of the instrument. It would also be hard for them to estimate how large the influence of a change in the surrounding is. That is a really complicated problem that depends on the local climate and is different everywhere. There is no equation for that.

    You will have to adjust for these things by comparing the station where the surrounding changed to its neighbours. They should all observe the same climatic changes, if something happened at just one station, that is likely not due to climate change.
  • The observers do not adjust the data. They just note down the reading of the instrument. It would also be hard for them to estimate how large the influence of a change in the surrounding is. That is a really complicated problem that depends on the local climate and is different everywhere. There is no equation for that.

    You will have to adjust for these things by comparing the station where the surrounding changed to its neighbours. They should all observe the same climatic changes, if something happened at just one station, that is likely not due to climate change.
    Okay makes sense.
    So percentage wise, how much of a variation are we talking?
    I'll put my beer on minuscule.  Do I get to drink my beer   B)  

    I don't supposed Anthony has addressed the accuracy of Arctic Circle temperature data?
  • Hard to say, the urban heat island can be more than a degree over the year and definitely needs to be removed. But they were not building sky scrapers here. The Met Office just made an experiment where they put stone plates below a weather station, quite an amount all around the station and it did not matter at all.
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