A Twitter thread from Dr. Ryan Maue,
Preliminary temperature data have arrived to wrap up 2020 and limit the most recent "climate decade" in the US.
I quickly recorded the change in mean (daily) temperature 2011-2020 minus 1981-1990.
Lower 48 change in "normals"
ΔTAVG = + 0.32 ° F.
ΔTMIN = + 0.46 ° F.
ΔTMAX = + 0.18 ° F.
That calculation is simply the 30 year change in US temperatures.
The low temperatures in the cities rise dramatically
Overall, US high temperatures, not so much, but again dominated by urban areas.
b / c people live in cities, land use change = local climate change
What should I do?
Global / US / regional / local temperature (climate) changes must always be population weighted, just like the energy industry works.
I see this in Weather + Load Forecast.
This is particularly relevant for people and thermal comfort (cooling) in urban areas.
I used PRISM data from the state of Oregon.
Another comparison option is GRIDMET from @climate_guy
Per request: Change in maximum temperatures (daily) averaged over the 2 different decades.
Midwest USA – cooling
Western USA – Warming
Physical climate reasons are not evident, as these time slices need a context.
Originally tweeted by Ryan Maue (@RyanMaue) on Jan 3rd, 2021.