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He sees you when you're sleeping
(lemmy.nz)
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this post was submitted on 08 Oct 2026
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why is it so colder?
(AFAIK) Ocean currents and winds (until now) regulated the weather in Europe. When that's gone, it will be wise for half of Europe to acquire a cargo sled.
https://geographyclassroom.com/gulf-stream-and-europes-weather/
And until then they'll need AC's. Welcome to life in the American Midwest, everybody! It's very sustainable!
AMOC
Part of it but local geography has a larger impact for the more continental side of Europe. The Alps are very important since they block a lot of cold wind circulation from the Arctic that really cools down North America.
Continental versus marine climates. Water has a lot of thermal mass, and it moderates the diurnal and seasonal temperature swings in areas near bodies of water. With the jetstream moving weather west-to-east at these northern latitudes, air masses moving across Canada cool off over the land mass of the continent before hitting the central and eastern cities. It's also much warmer in the summer in those places, for the same reason.
Even if AMOC shuts off completely, Europe generally will be somewhat warmer in the winter, and cooler in the summer, than Canada.
I hope you're right, but research has recently suggested that the Little Ice Age was caused by the AMOC shutting down in the early 1400s.
...
If this research is correct, losing the AMOC again could cause a huge crisis for Europe.
Yes, I agree. No doubt that it'd cause a major crisis in Europe, and I didn't intend to imply otherwise. Its people, agriculture, buildings, and infrastructure are all adapted to the current climate, and a sudden shift will be very hard to handle. We saw that with the heat waves this past summer. Phoenix, Arizona routinely handles higher temperatures, but the buildings there are all equipped for it, while ventilation and air conditioning are not common in much of Europe.
Elevation maybe? Most of Canada is pretty high up from sea level. Dunno how much of Europe would be the same.
AMOC
Could be multiple factors no? It can’t just be the one.
Alberta is still really freaking cold, and there is warm air coming up the mountain range all the time.
Alberta is landlocked, isn't it? Places deep inside a continent are always much more variable in annual climate than coastal places, as the ocean has such vast thermal inertia.
Yes, but that doesn’t apply unilaterally, the east coast gets pretty harsh winters compared to the west. The west coast hardly gets snow. The east coast constantly gets multi foot snowfalls and -30c weather.
Even New York in the USA gets blanketed with snow frequently.
Blame it on the Canadians 🤪
It’s all lake/ocean affect, cold wind picking up moisture from large bodies of water. For example the Great Lakes are a significant source of lake affect snow in some of the snowiest parts of the northeast.
But here along the coast the nor’easter is the storm to watch for. Basically storms come up the coast until Canada stops it at the border. Then the storm hangs out off the coast of main and the winds at the back of the storm picks up all that moisture from the ocean and send it into new england
It can be multiple factors, but a lot of it is AMOC.
I think Boston is the more apt comparison to Europe . Yes it’s AMOC on the east coast. We’re also somewhat moderated by the coast. However further inland temperature swings are more severe because of prevailing winds crossing all that land
Either way, it’s not that Canada is further south than you’d expect but that Europe is much further north than their weather would have you believe. AMOC slowing or even stopping is going to be a problem. Someone pointed out food - if temperature trends move where food can be grown or even prevent it in some countries
What does that stand for?
Atlantic meridional overturning current. It’s an ocean current that draws warm water up from the east coast of South/Central America, north and eastward
The shallow, sunny Gulf of Mexico and Caribbean are the main place for heat energy entering the system.
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JC017073
this shows about three times as much heat entering the system in the Gulf and Caribbean (~1.2 petawatts) than is brought from the South Atlantic and Indian Ocean (0.4PW).
https://lemmy.dbzer0.com/comment/28525895
I know I could google it, I was just prodding the folks who drop nothing but an acronym to provide a little more explanation in with their post than just some uncommon letter string. The other posts that explain it weren’t there at the time of my post.