Home > GIStemp > GISTEMP: Town Mouse and Country Mouse

GISTEMP: Town Mouse and Country Mouse

2010 May 21

Town Mouse and Country Mouse

In STEP2, GISTEMP produces two sets of output files GLB.Ts.GHCN.CL.PA.[1-6] and GLB.Ts.GHCN.CL.[1-6]. The first set contains the periurban adjustments. The second set excludes them. Typically, in STEP3, GISTEMP uses the periurban adjusted files to produce the global anomaly outputs. But a minor tweak to the do_comb_step3.sh script and we can use the files without the periurban adjustments. We compare and contrast:

GISTEMP: Town Mouse and Country Mouse

GISTEMP: Town Mouse and Country Mouse

The Town Mouse has a lower trend than the Country Mouse. But that is mostly due to a ‘rise’ in adjusted temps pre-1940 and only a very slight downshift in the post-1960 anomalies.

These runs were made with a May 15 GHCN v2.mean, the May version of USHCN (v9641C_201005_F52), the GISTEMP v2.inv, end year = 2010, and nightlights flag =1. The ‘result’ files used in this post are listed here:



  1. 2010 May 21 at 5:28 pm

    Just to clarify, is the red in Fig 1 Town Mouse? And that’s without peri-urban adjustments?

    And Fig 2 is Town – Country>

  2. 2010 May 21 at 5:34 pm

    Yeah – I need to add a legend to that script – or just do the dang rewrite.

    Red = With PeriUrban Adjustment
    Green = Without PeriUrban Adjustment
    Diff = PA – noPA

  3. carrot eater
    2010 May 22 at 4:48 am

    If there were a prize for cute article names, you would win it.

  4. steven Mosher
    2010 May 22 at 9:15 am


    Perhaps Ron can get all the various “community” folks to run there programs with the GISSdata sets ( no urban adjust) and we can compare on an apples to apples basis how the various methods handle the same data. That is same data in (data after Giss step 0) Same treatment of urban/rural
    ( no adjustment) and compare the data out. Just a base comparison to understand what kind of differences different METHODS can produce. call it the methodlogical uncertainty

  5. 2010 May 22 at 11:50 am

    I may be spending too much time down the Rabett hole. ;=)

    I’ve put up the v2.mean_comb I used for this run.

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