this post was submitted on 11 Sep 2023
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[–] Chainweasel@lemmy.world 181 points 2 years ago* (last edited 2 years ago) (5 children)

A decade ago, It was predicted that we would hit 1.5°C between 2050-2060, and even as recently as 2 years ago the prediction had moved forward to between 2030-2040.
The next decade or two are going to be very... interesting

[–] alvvayson@lemmy.world 72 points 2 years ago* (last edited 2 years ago) (2 children)

The IPCC calculations were always criticized for being overly optimistic. Anyone following this debate knew that we would hit 1.5 C sooner rather than later.

We are definitely going to hit 3 degrees in our lifetime, once the melting tundras release their methane store.

[–] kale@lemmy.zip 5 points 2 years ago (2 children)

Melting tundra releases methane, accelerating the increase in temperature. Rising temperature reduces polar ice, making oceans absorb more heat, accelerating heating. Climate pattern changes cause more frequent and larger wildfires, accelerating heating.

There are probably processes that work to reduce heating as it increases that I'm not aware of, but there are a lot of positive feedback processes which is concerning.

I believe the IPCC 1.5C was criticized because it included effects of a carbon sequestering process that hasn't been invented yet. That's pretty optimistic.

There are probably processes that work to reduce heating as it increases

Nuclear war, for one. In a more naturalistic vein, asteroid strike or massive volcanic eruptions. People worried about climate change just refuse to look on the bright side.

[–] Graphine@lemmy.world -1 points 2 years ago* (last edited 2 years ago)

Which is why I support the idea of setting up bases on the Moon and/or Mars.

Everything is accelerating, and nobody gives a fuck to do anything before it's too late. I hate the argument that NASA doesn't push its budget to prevent CC or even Space X. Because stopping CC is a global effort on a colossal scale. It's not going to work until it's too late. Might as well get off this rock.

Edit: Very fucking optimistic of you all

[–] ruford1976@lemmy.world 70 points 2 years ago* (last edited 2 years ago) (1 children)

what's worse is that it's actually 1.6 C

it says in the article here

Data released last week from Copernicus, a branch of the European Union Space Programme, shows August was 1.59C warmer than 1850–1900 levels, following a 1.6C increase in July.

[–] rallatsc@slrpnk.net 23 points 2 years ago (1 children)

Yes but only for a couple of months, averaged over the whole year it's significantly lower than that. Probably still on track to hit the annual average of 1.5 sometime in the next 10-20 years. Still definitely a dire situation but not entirely out of left field based on the recent estimates.

The recent records have now lifted the year-to-date global temperature to the end of August to 1.35C above pre-industrial levels, just 0.01C behind 2016 — the current record holder

[–] ruford1976@lemmy.world 4 points 2 years ago

i had my doubts. i was questioning the lack of coverage of this news.

regardless there is still good reason to be concerned.

[–] BaronDoggystyleVonWoof@lemmy.world 29 points 2 years ago (2 children)

Soooo 3 degrees bij 2050? We are so fucked.

[–] Sylver@lemmy.world 34 points 2 years ago (1 children)

Yeah, it’s honestly horrifying to see the lack of reaction around the world. If you live anywhere near the coast, you better get the fuck out or tell your kids to.

[–] Serinus@lemmy.ml 25 points 2 years ago* (last edited 2 years ago) (1 children)

I'm already telling people to get out of Florida*. I expect multiple Katrina-level events over the next 15 years. "Florida refugees" is going to become a common phrase.

Orlando might be more likely to survive than Miami or Tampa, but do you really want to be in the city surrounded by devastation?

We, as humans, seem to have lost the ability to plan more than 20 years into the future. Florida is still building in areas that are going to be crushed, and the only reaction is from insurance companies.

We're not trying to prevent it. We're not building any kind of defenses or contingency plans. We're not encouraging people to move out. We're not preventing people from moving in. In fact, we're building new and encouraging people to move IN to Florida. It's full on head in sand.

[–] Num10ck@lemmy.world 7 points 2 years ago (1 children)

look at their leadership. look at their voters. look at the short-term profit potential.

[–] Dkarma@lemmy.world 2 points 2 years ago

Look at the percentage of these purchases that are foreign investors making cash offers and I think u start to see why the insurance companies leaving isn't having the effect it should.

[–] BrightCandle@lemmy.world 8 points 2 years ago (1 children)

Still tracking for 8.5C by 2100!

[–] BeigeAgenda@lemmy.ca 1 points 2 years ago

We will need to drop some ice cubes in the ocean around that time.

[–] PersnickityPenguin@lemm.ee 2 points 2 years ago (2 children)

Supposedly the new stringent heavy shipping emissions controls are having an impact on the greenhouse effect. Reduction of sulfur dioxide which had a reverse greenhouse effect is warming the oceans up more.

"Carbon Brief analysis shows that the likely side-effect of the 2020 regulations to cut air pollution from shipping is to increase global temperatures by around 0.05C by 2050. This is equivalent to approximately two additional years of emissions."

https://www.carbonbrief.org/analysis-how-low-sulphur-shipping-rules-are-affecting-global-warming/#:~:text=Global%20emissions%20of%20sulphur%20dioxide,warming%20coming%20from%20greenhouse%20gases.

So this may be our first example of the threats of NOT enacting terraforming for climate change will have.

[–] SpaceCowboy@lemmy.ca 0 points 2 years ago (1 children)

It proves that creating cloud cover will impact ocean temperature. There are methods of doing this without creating acid rain. Just spray ocean water as a fine mist into the air and you should get some nice fluffy clouds. We have the capability to cover entire oceans in cloud cover to mitigate global warming.

Obviously this would have some unpredictable impacts on weather patterns, but we're already dealing with that no matter what we do. We're at a point where we're desperate enough to try some crazy schemes like this.

[–] PersnickityPenguin@lemm.ee 1 points 2 years ago* (last edited 2 years ago)

After September 11th and the COVID lockdowns, scientists noted an increase in global surface temperature due to the absence of contrails. So yes, this is actually something we are already doing!

Sulfur dioxide however is an even more effective reflector of sunlight compared to water vapor. And don't forget, water vapor is itself a very greenhouse agent that contributes toward planetary heating.