This “Anomaly Map” was produced for the most recent month at the NASA / GISS web site here:
You can create many maps, and many of them will not show The Bolivia Effect as well as this one (while some may be better). This map was not “cherry picked”, it is just the most recent month with data available. It does, however, have a very nice example of The Bolivia Effect in it. (At least 2, in fact).
UPDATE: I’ve made a comparison map that uses a 1881-1990 ‘baseline’ (i.e. all but the most recent decade) of data and that only uses a 250 km ‘smoothing’. I’d have liked to have used a 0 km smoothing so you could see just how small an area is really covered, but GISS only let you do 250 km at the smallest. Notice how much of this map is grey. We just…
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