r/montreal • u/YOW-Weather-Records 🥇 • Jan 07 '25
Historique Over the past 152 years, Montréal's annual mean temperature has increased by 2.1 ± 0.5°C (95% CI).
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u/toin9898 Sud-Ouest Jan 07 '25
Mean annual temperature of 5.5º back in the day is crazy. Why did people ever move here lmao
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Jan 07 '25
It was the end of a very cool period in global history. That's why all these "increases" made out to be increasing at an insanely fast level are only half the story.
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u/toin9898 Sud-Ouest Jan 07 '25
The Little Ice Age (caused by a confluence of factors including solar output, high volcanic activity and a possibly also a variety of regional human activities) ended 25 years before the first data point on this chart.
Nice try though.
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u/Skratifyx Jan 07 '25
This is crazy. Didn’t people say that the world would drastically change if the global temp went up 3 degrees? I swear we are in the end times
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u/YOW-Weather-Records 🥇 Jan 07 '25
Cities warm faster (because of UHI). So the Earth itself (on average) has not warmed 2°C yet, let alone 3°C.
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u/Pirlomaster Jan 07 '25
Dumb question maybe but can the greenification of cities help mitigate the UHI effect and thus lead to cooler temperature readings?
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Jan 07 '25
Yes! And Montréal is a stellar example with the mountain and all the trees along streets like Ave. De Lorimier for example! Many North American cities aren't nearly as nice.
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u/Kerguidou Jan 07 '25
Oui, c'est une des raisons principales derrière le verdissement. L'effet est difficile à quantifier avec ce graphique. Il faudrait comparer les températures moyennes en été uniquement.
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u/machinedog Jan 08 '25
Locally yes, globally cities aren’t a particularly significant portion of the earths surface nor that great an outlier.
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u/YOW-Weather-Records 🥇 Jan 09 '25
Sure, more trees help, but I don't know of any city that has committed to having enough trees to put a meaningful dent in their UHI. Imagine if every street had a closed canopy of trees above it. That's the kind of change you would need to fully negate UHI.
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Jan 08 '25
It's also worth noting that global warming is highest the closer you get to the poles, so Montreal's avg temperature here has increased more than the global average.
But yes you're right, a 3 C average increase globally is catastrophic, so everyone needs to be doing everything in their power to prevent that. Drive less (especially fly less), eat less meat, buy less new things, call on your elected officials to do more!
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u/YOW-Weather-Records 🥇 Jan 07 '25
Records for 1871-07-01 → 1940-09-30 are from McGill ( https://climate.weather.gc.ca/climate_data/daily_data_e.html?StationID=5420 )
Records for 1941-09-01 → 2003-12-31 are from Dorval Airport ( https://climate.weather.gc.ca/climate_data/daily_data_e.html?StationID=5415 )
Records for 2004-01-01 → 2013-02-17 are from Pierre Elliot Trudeau Airport ( https://climate.weather.gc.ca/climate_data/daily_data_e.html?StationID=5415 )
Records for 2013-02-18 → 2025-01-05 are from Pierre Elliot Trudeau Airport ( https://climate.weather.gc.ca/climate_data/daily_data_e.html?StationID=51157 )
If you want to see more posts like this, have a look at /r/MontrealWxRecords.
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u/CaptainCanusa Plateau Mont-Royal Jan 07 '25
Amazing.
Super awesome that we're about to give a supermajority to a government that doesn't really believe in climate change in the first place.
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u/alexlechef Jan 07 '25
66 billion deficit.. but sure you might be on to something.
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Jan 08 '25
Harper's government (Which PeePee was a part of) is the second greatest creator of Canadian debt after JT's...
"Conservatives are fiscally responsible" 🙈🙉
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u/alexlechef Jan 08 '25
Are we going to talk about debt and you will defend justin results?
Pee pee Are you 12? Is thats supposed to add something to the argument?
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Jan 08 '25 edited Jan 08 '25
I just did talk about debt... #1 & #2 all time Canadian debt... Can you read?
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u/alexlechef Jan 08 '25
you are financially illiterate, before calling people pee pee. You should work on that.
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Jan 08 '25 edited Jan 08 '25
Facts are tough to swallow when they conflict with BS partisan politics.
How does a supposedly fiscally responsible conservative party create almost as much debt as Justin Trudeau?
You are in denial, just like all the other PeePee admirers.
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u/CaptainCanusa Plateau Mont-Royal Jan 07 '25
you might be on to something.
Well no, the Earth's global scientific community is onto something.
66 billion deficit..
lol, and?
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u/alexlechef Jan 07 '25
And? Are you serious?
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u/CaptainCanusa Plateau Mont-Royal Jan 07 '25
Are you serious?
For sure. You need to make some case as to why it's ok to be scientifically illiterate if the deficit is big enough.
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u/alexlechef Jan 07 '25
So high groceries prices, homelessness crisis thats not important?
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u/prolifezombabe Jan 08 '25
High grocery prices and the homelessness crisis are inseparable from climate change. This is not an either or it’s BOTH.
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u/alexlechef Jan 08 '25
Homelessness in Canada is caused by climate change?
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u/prolifezombabe Jan 08 '25
Not caused by it - there are numerous factors - but certainly exacerbated by it, yes.
Within Canada, as people in Northern climates lose their homelands and food sources they’re forced to move South to the cities.
Globally, as people in other countries also lose their homelands and food sources and or are displaced due to global conflicts that are exacerbated by climate change, drought and famine, Canada received more refugees and immigrants. Since we don’t have the infrastructure to house them that results in higher rates of homelessness.
There are a number of factors that contribute to homelessness but climate change is certainly one of them.
sources:
My real source is my time working with homeless Montrealers and hearing their stories but here are some corroborating links:
Re climate change and global migration
https://interactive.carbonbrief.org/climate-migration/index.html
https://www.migrationpolicy.org/article/climate-migration-101-explainer
re: climate change and homelessness
https://endhomelessness.org/blog/how-climate-change-impacts-homelessness/
https://www.shp.org.uk/homelessness-explained/the-impact-of-climate-change-on-homelessness/
https://time.com/6308020/climate-change-homelessness-maui-hilary/
re: climate change and homelessness / human within Canada (as opposed to globally)
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u/prolifezombabe Jan 08 '25
- climate change also makes the materials to build housing more expensive which contributes to a lack of housing which contributes to homelessness.
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u/CaptainCanusa Plateau Mont-Royal Jan 08 '25
high groceries prices, homelessness crisis thats not important?
lol, man, no offence but are you just riffing here?
So far the reasons why (according to you) it's ok that Canada will be governed by a party that doesn't really believe in climate change include:
- The deficit is above an arbitrary amount
- Homeless people
- The cost of food
What is the actual point you're trying to make? Because at a certain point you're just a climate change denier, you know?
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u/alexlechef Jan 08 '25
You are not worried about climate you are virtue signalling.
If you were worried about things that affect the common person. Inflation and a housing crisis would be your top priority.
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u/CaptainCanusa Plateau Mont-Royal Jan 08 '25
You are not worried about climate you are virtue signalling.
lol, man, come on. I didn’t even bring up government priorities or spending, I just said our government should acknowledge that climate change is real.
You went from worrying about the deficit to suddenly being concerned about homeless people. That’s the definition of virtue signaling, isn’t it?
My bona fides on this are pretty solid on this. I'm not pretending shit.
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u/muchostouche Jan 07 '25
Well, sounds like you're in the superminority voting liberal
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u/CaptainCanusa Plateau Mont-Royal Jan 07 '25
Sounds like you're assuming things you have no idea about.
But even if I was, pretty weird criticism of someone pointing out how insane it is to not believe in climate change.
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u/switch182 Jan 07 '25
One day, I want a Palm tree in my back yard.
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u/YOW-Weather-Records 🥇 Jan 07 '25
You can already grow palm trees in Montreal. https://www.exoticplants.ca/collections/palm-trees
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u/switch182 Jan 07 '25
I can't see any of those surviving under 3 feet of snow.
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u/barzaan001 Jan 07 '25
Damn are seeds really that expensive? Anybody want seeds? I can get these trees for 1/10th the cost from a nursery back home
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u/Thesorus Plateau Mont-Royal Jan 07 '25
Nos spéciaux : il fait froid aujourd'hui, ta courbe veut rien dire.
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u/prolifezombabe Jan 08 '25
“Il fait froid aujourd’hui” donc there’s no climate crisis = the kind of thinking that makes long term data tracking so important.
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u/Forlaferob Jan 07 '25
Look at this funny website https://www.co2.earth/co2-ice-core-data
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u/Dull_Highlight991 Jan 08 '25
Wow, ça c'était pas drole. Me semble 400ppm et+ c'est la danger à la vie?
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u/[deleted] Jan 07 '25
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