One of the common themes seen with the surfacestations.org project has been the proximity of BBQ grills to official NOAA thermometers used in the United States Historical Climate Network (USHCN). Despite now having surveyed over 77% of the 1221 station network, some truths continue to be self evident.
This station was photographed by our prolific volunteer, Eric Gamberg. The proximity to the concrete patio earns this station a CRN4 rating, it may be a CRN5 when they wheel out the BBQ away from the house. But who knows? The grilling schedule is not part of the metadata.
But fear not, NASA GISS adjusts for such problems of concrete and BBQ grills. Consider the following blink comparator:
Source: NASA GISS
I’m not sure why the hinge point is 1978, perhaps that’s when the homeowner acquired the BBQ? Sure, that is an absurd claim, but certainly no more absurd than the GISS homogenization adjustment itself. Adjusting the past increases the overall positive slope of the temperature trend.
For those new to the whole concept of USHCN stations, the NOAA thermometer is the white slatted object on the post in the center of the photo. It is known as an MMTS thermometer and a cable goes from it into the home where the volunteer observer will write down the high and low into the B91 logbook and send in the report once a month to the National Climatic Data Center (NCDC).There are more photos of this station which you can see in my online station database.
The Gallery of photos can be seen here