437
Ozone hole goes large again
(www.esa.int)
Just end me already, no more edging
They don't know why the ozone hole is big this year but they suspect it may be related to a volcanic eruption. Article concludes that scientists expect the ozone layer to be back to normal by 2050.
The suggestion is that this is an unusual year for the ozone layer which sees the hole expand this time every year before retracting again by December. They never suggest human behavior is damaging it again.
To be fair, the commenter did not suggest that. But a bigger ozone hole contributes to global warming.
I don't know what provoked the OP's comment. I just wanted to add context because I personally made a lot of bad assumptions from it before reading the article.
Also I don't know that your statement is accurate and global warming is never brought up in the article.
as far as I understand, the presence of ozone causes a greenhouse effect. so an ozone hole should lessen the effects of global warming, if anything. Not to say we should be growing ozone holes of course
Where
Lots of doom and gloom in the comments here. As the article describes, the hole in the ozone layer varies in size over time. It is slowly recovering, but the annual variability means it sometimes is larger than before.
The variability of the size of the ozone hole is largely determined by the strength of a strong wind band that flows around the Antarctic area. This strong wind band is a direct consequence of Earth's rotation and the strong temperature differences between polar and moderate latitudes.
If the band of wind is strong, it acts like a barrier: air masses between polar and temperate latitudes can no longer be exchanged. The air masses then remain isolated over the polar latitudes and cool down during the winter.
Although it may be too early to discuss the reasons behind the current ozone concentrations, some researchers speculate that this year’s unusual ozone patterns could be associated with the eruption of the Hunga Tonga-Hunga Ha'apai in January 2022.
And
Claus concludes, “Based on the Montreal Protocol and the decrease of anthropogenic ozone-depleting substances, scientists currently predict that the global ozone layer will reach its normal state again by around 2050.”
If only all the other ways we’re trashing this planet were as easy to solve as it was to simply ban CFCs
They aren't that difficult either, it just will have a bigger impact because we have been relying on them for longer.
Banning oil and single-use plastics would go a long way.
Yeah, but I’m wondering what can replace rubber tires. I was just reading about how they’re a massive source of microplastics and other pollutants in the environment
I'd Imagine that some type of aerofoam type thing could work for smaller vehicles like bikes n all
This strong wind band is a direct consequence of Earth's rotation and the strong temperature differences between polar and moderate latitudes.
Sounds like something global warming can make worse.
Isn't the northern hemisphere jet stream struggling due to decreasing temperature differences, since the poles are warming faster? Which then causes weather to change less, making things more extreme?
so you don't think the increase in methane is gonna effect this?
I dunno about you, but 'lots of doom and gloom' sells short of utterly fucking shocking temp rises in the ocean, the slowing of the gulf stream and the heat-stroke of a winter the southern hemisphere just endured.
meteorologist Brian McNoldy of the University of Miami called global air and ocean temperature trends "bonkers," stating: "People who look at this stuff routinely can't believe their eyes. Something very weird is happening." https://www.axios.com/2023/06/13/climate-extremes-warming-charts-concerns
I'm not trying to fear-monger but I think we'd all be better off frankly recognizing the shit isn't going to hit the fan, it's hitting it rapidly and the backblast is beginning to impact. It's not doom-and-gloom if it's actual reality people are trying to live through.
The hole was set to be normal by now.
Where did you hear that? CFCs can linger in the atmosphere for 50-100 years, so recovery is a slow process. It took more than a decade after the Montreal Protocol went into effect before the hole in the ozone layer stopped growing. Additionally, different parts of the ozone layer will recover at different rates:
I haven't checked the article linked. I could swear about a month ago I saw a headline saying the ozone hole was slowly recovering?? No?? NASA backed research or something? Did I imagine it all?
Yeah you aren’t imagining it. I recall reading one a while back saying the hole in the ozone layer over Antartica was healed. I cannot find the article in particle but a quick google search turned up this one that said it closed in 2021
Edit: Antartica
Yeah I thought I saw one around here recently that said it had recovered since the 80s or 90s since we stopped using certain aerosols and refrigerants.
Best guess is the ozone is super sensitive to pollution and covid restrictions stopped.
Your best guess is wrong :)
If everyone who could WFH did, I'm sure the lower carbon emissions from so many fewer cars on the road would have been a large help. Buuut noooo gotta be in the office so you can see me type a little.
Carbon emissions don't contribute to the ozone hole, only certain pollutants
You gotta be in the office so you stay in your district. If you could live anywhere and work the same job it would fuck up the gerrymandering
I'm surprised I haven't heard that as an explanation for the anti-wfh people yet. That's a good one.
this post was submitted on 20 Oct 2023
437 points (97.2% liked)
World News
38978 readers
1412 users here now
A community for discussing events around the World
Rules:
-
Rule 1: posts have the following requirements:
- Post news articles only
- Video links are NOT articles and will be removed.
- Title must match the article headline
- Not United States Internal News
- Recent (Past 30 Days)
- Screenshots/links to other social media sites (Twitter/X/Facebook/Youtube/reddit, etc.) are explicitly forbidden, as are link shorteners.
-
Rule 2: Do not copy the entire article into your post. The key points in 1-2 paragraphs is allowed (even encouraged!), but large segments of articles posted in the body will result in the post being removed. If you have to stop and think "Is this fair use?", it probably isn't. Archive links, especially the ones created on link submission, are absolutely allowed but those that avoid paywalls are not.
-
Rule 3: Opinions articles, or Articles based on misinformation/propaganda may be removed. Sources that have a Low or Very Low factual reporting rating or MBFC Credibility Rating may be removed.
-
Rule 4: Posts or comments that are homophobic, transphobic, racist, sexist, anti-religious, or ableist will be removed. “Ironic” prejudice is just prejudiced.
-
Posts and comments must abide by the lemmy.world terms of service UPDATED AS OF 10/19
-
Rule 5: Keep it civil. It's OK to say the subject of an article is behaving like a (pejorative, pejorative). It's NOT OK to say another USER is (pejorative). Strong language is fine, just not directed at other members. Engage in good-faith and with respect! This includes accusing another user of being a bot or paid actor. Trolling is uncivil and is grounds for removal and/or a community ban.
Similarly, if you see posts along these lines, do not engage. Report them, block them, and live a happier life than they do. We see too many slapfights that boil down to "Mom! He's bugging me!" and "I'm not touching you!" Going forward, slapfights will result in removed comments and temp bans to cool off.
-
Rule 6: Memes, spam, other low effort posting, reposts, misinformation, advocating violence, off-topic, trolling, offensive, regarding the moderators or meta in content may be removed at any time.
-
Rule 7: We didn't USED to need a rule about how many posts one could make in a day, then someone posted NINETEEN articles in a single day. Not comments, FULL ARTICLES. If you're posting more than say, 10 or so, consider going outside and touching grass. We reserve the right to limit over-posting so a single user does not dominate the front page.
We ask that the users report any comment or post that violate the rules, to use critical thinking when reading, posting or commenting. Users that post off-topic spam, advocate violence, have multiple comments or posts removed, weaponize reports or violate the code of conduct will be banned.
All posts and comments will be reviewed on a case-by-case basis. This means that some content that violates the rules may be allowed, while other content that does not violate the rules may be removed. The moderators retain the right to remove any content and ban users.
Lemmy World Partners
News !news@lemmy.world
Politics !politics@lemmy.world
World Politics !globalpolitics@lemmy.world
Recommendations
For Firefox users, there is media bias / propaganda / fact check plugin.
https://addons.mozilla.org/en-US/firefox/addon/media-bias-fact-check/
- Consider including the article’s mediabiasfactcheck.com/ link
founded 1 year ago
MODERATORS