The recent photo submissions at surfacestations.org have demonstrated that many NOAA/NWS climate monitoring stations feature convenient close-by vehicle parking.
Not to be outdone, the Paso Robles USHCN Climate Station of Record features freeway on-ramp access to California’s Highway 101. The weather station is just feet from the street, with the temperature sensor placed just high enough to catch full view of vehicles over the fence.
My thanks to surfacestations,org volunteer Ed Hahn for this photo. His complete photo essay is available here
Here is the NASA GISS plot for Paso Robles:
Curiously the GISS database still classifies this station as a “rural area”.
I find it interesting that the temperature was trending down in the 70’s then a huge offset occurred just about 1980. I wonder if that was when the freeway access was added? Nothing in the MMS records seem to indicate a station move or other change at that time. Or maybe that’s when somebody got the bright idea to pour a concrete slab under the the station?
From NOAA’s own siting specs: “The sensor should be at least 100 feet from any paved or concrete surface.”