A Twitter thread from Dr. Ryan Maue,
Prelim temperature data has arrived to complete 2020 & put a lid on the most recent “climate decade” across the U.S.
I quickly mapped up 2011-2020 minus 1981-1990 change in mean (daily) temperature.
Lower 48 change in “normals”
ΔTAVG = +0.32°F
ΔTMIN = +0.46°F
This calculation is simply the 30-year change in U.S. temperatures.
Urban low temperatures are increasing dramatically
Overall U.S. high temperatures, not so much, but again, urban dominated.
b/c people live in cities, land-use change = local climate change
What to do?
Global / U.S. / regional / local temperature (climate) changes must always be population weighted just like how energy industry operates.
I see this in weather + load forecasting.
This is especially relevant for people & thermal comfort (cooling) in urban areas.
I used PRISM data from Oregon State.
But, another option for comparison is GRIDMET from @climate_guy
Per request: change in Maximum Temperatures (daily) averaged up across the 2 different decades.
Midwest U.S. — cooling
Western U.S. — warming
Physical climate reasons are not apparent b/c these time-slices need context.
via Watts Up With That?
January 3, 2021 at 08:22PM