GISTEMP: Town Mouse and Country Mouse
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:
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: