[HN Gopher] Chemicals released during wildfires in Australia dam...
       ___________________________________________________________________
        
       Chemicals released during wildfires in Australia damaged the ozone
       layer
        
       Author : pseudolus
       Score  : 210 points
       Date   : 2023-03-09 14:01 UTC (8 hours ago)
        
 (HTM) web link (www.nature.com)
 (TXT) w3m dump (www.nature.com)
        
       | photochemsyn wrote:
       | Curiously enough, chlorine radicals and volatile organic
       | compounds from coal and wood combustion have the opposite effect
       | in the lower atmosphere, where the interaction _increases_ ozone
       | production (due to reaction with various nitrogen oxides). This
       | also generates the lung irritant PAN which is a component of
       | brown smog:
       | 
       | https://www.nature.com/articles/srep36821
       | 
       | > "The chlorine radical is a potent atmospheric oxidant, capable
       | of perturbing tropospheric oxidative cycles normally controlled
       | by the hydroxyl radical. Significantly faster reaction rates
       | allow chlorine radicals to expedite oxidation of hydrocarbons,
       | including methane, and in polluted environments, to enhance ozone
       | production... Even when present at low levels, Cl radicals can
       | have a profound impact on tropospheric oxidation and radical
       | cycling. Cl chemistry can significantly impact levels of
       | tropospheric ozone, a greenhouse gas that is also a precursor for
       | the OH radical, destroying it in clean environments and enhancing
       | its formation under polluted conditions."
       | 
       | Incidentally, Australia's massive wildfires of 2019-2020 produced
       | about 700 million tons of CO2, which is only about 1/3 of
       | Australia's annual fossil CO2 generation from coal (counting
       | total production of Australian coal, of which only about 1/5th is
       | burned in Australia itself, the rest being exported).
       | 
       | If you want to eliminate fossil fuel use, and aren't just
       | posturing for political convenience, stopping production makes a
       | lot more sense than stopping emissions at point-of-use.
        
         | paganel wrote:
         | > stopping production
         | 
         | And then how do you provide energy cheaply and reliably enough?
         | That is in order to maintain today's "civilizational level", so
         | to speak.
         | 
         | As far as I am aware the energy sources that are now branded as
         | alternative cannot do that, i.e. provide energy that is both
         | cheap and reliable.
        
           | photochemsyn wrote:
           | Technology is reaching the point where renewables are just as
           | cheap and reliable as fossil fuels (and note, coal plants
           | break down and gas and oil supplies get interrupted):
           | 
           | https://www.reuters.com/business/environment/australia-
           | promi...
           | 
           | It's rather interesting that some major fossil fuel producers
           | are building renewable domestic infrastructure (Australia,
           | Saudi Arabia) although they don't seem to want to cut exports
           | as quickly.
        
             | zizee wrote:
             | Both of you have good points. The world needs cheap energy
             | to function. Renewables are becoming more capable by the
             | day, and can/will be that source of cheap reliable energy.
             | 
             | But the transition is not going to be instantaneous. If
             | renewables are as cheaper/reliable/better as fossil fuel
             | (and continually improving) the economic incentives will
             | effectively push the transition as fast as is possible. The
             | transition is supply constrained as much as anything.
             | Production of solar, wind is rapidly growing, but it can
             | only grow so quickly.
        
         | nojvek wrote:
         | Coal exports are a huge part of Australia's GDP. Resource
         | exports make 67% of their total exports
         | https://www.rba.gov.au/snapshots/economy-composition-snapsho...
         | 
         | If Australia stopped exporting Coal (mostly to China), it would
         | decimate not only their economy, but affect China (world's
         | factory) making everything else expensive too.
         | 
         | Unpopular opinion: It seems with Coal or Gasoline, due to CO2
         | emissions, they've been seen as unclean and something we should
         | switch away from. However their energy density is high, only
         | below nuclear. Easy to transport, relatively safe. It's an
         | amazing source of fuel.
         | 
         | I'm somewhat hopeful that someday we'll figure out how to
         | capture 100s of millions of tons of C02 from atmosphere and
         | turn it into synthetic gasoline-like fuel. All using solar
         | energy.
         | 
         | The whole dance of global warming is because we know how to
         | burn fuels and create heat + CO2 + H20, but we don't know how
         | to do the reverse cheaply at scale.
         | 
         | Once we do that, then gasoline/ethanol is a renewable resource.
         | 
         | Lithium ion batteries are great, but gasoline is 100x denser
         | than batteries.
        
           | guelo wrote:
           | > capture 100s of millions of tons of C02 from atmosphere
           | 
           | It's way more efficient to capture it at the source, ie. the
           | coal plant. But nobody wants to talk about that because that
           | would cost coal companies money and that's not allowed. They
           | want to spew the pollution for free to keep coal energy
           | "cheap" while the whole world has to pay for the cleanup.
        
             | photochemsyn wrote:
             | It would take all the energy the coal plant produced to
             | capture all of its CO2 emissions, it's a pretty futile
             | cycle... For comparison, try to imagine a diesel truck that
             | captured all its emissions onboard as it drove down the
             | highway. It's not very plausible and would represent a huge
             | drain on power output.
             | 
             | FutureGen was a massive failure, too.
        
         | idiotsecant wrote:
         | >If you want to eliminate fossil fuel use, and aren't just
         | posturing for political convenience, stopping production makes
         | a lot more sense than stopping emissions at point-of-use.
         | 
         | Talk about posturing. This is the least effective way to reduce
         | carbon emissions, because it simply won't be done without
         | sufficient replacement energy generation and transmission in
         | place, as well as alternatives for spot-use of hydrocarbons
         | like automotive, heating, etc.
         | 
         | If you want to get nothing done, propose solutions that make
         | nobody happy. If you want to get something done propose
         | solutions that can work.
        
           | somewhereoutth wrote:
           | However, it would force people to do something. Restricting
           | supply increases price, and thus alternatives/efficiencies
           | become more viable.
           | 
           | An effective climate preservation campaign would focus on
           | production facilities - coal mines, oil rigs etc. Not
           | necessarily directly - for example the best way to shut down
           | North Sea oil production would be to make it impossible to
           | fly helicopters out there - protest airfields, helicopter
           | maintenance depos, protest to the pilots, disrupt the
           | logistics. Of course this then becomes a national security
           | threat, and would be dealt with accordingly.
        
             | bluGill wrote:
             | It forces them to vote you out of office and in come the
             | subsidies for coal.
        
               | bobthepanda wrote:
               | Yeah, for an example of how this works horribly in
               | practice, look at how the French yellow vests rolled back
               | their climate taxes
        
             | fnordpiglet wrote:
             | Until the supreme dictator decrees this we need to figure
             | out something that works in a market economy as we don't
             | have a command economy.
        
             | WalterBright wrote:
             | At better way is tax it. Governments are experts at taxing.
        
               | schneems wrote:
               | And corporations are experts at regulatory capture.
               | 
               | I would be amazed/surprised if one is introduced and
               | effective. But you don't get what you don't fight for.
               | Just because the odds are stacked against today doesn't
               | mean we can't do something to shift that stack a bit for
               | a better tomorrow.
        
           | photochemsyn wrote:
           | At the very least, counting the emissions from coal produced
           | in Australia on Australia's carbon emissions ledger and
           | attaching the 'externalities' to the producer makes more
           | sense.
        
             | zizee wrote:
             | Coal consumption will not go down if Australia stops
             | exporting coal. It's a fungible commodity. Whoever uses
             | Australia coal would just move to another source if prices
             | are increased to pay for the unreleased carbon.
             | 
             | If you cannot ensure a consumer is affected, it won't
             | change consumption (which is what we want).
        
               | photochemsyn wrote:
               | Well, that's why you have a global international treaty
               | treating all producers the same, so they all have to pay
               | the same carbon cost per ton of carbon exports. They can
               | pass the cost onto the consumer in the form of higher
               | prices, or they can absorb it themselves (reducing profit
               | margins).
               | 
               | It's also just easier to do the accounting on the
               | producer-exporter side.
        
         | somewhereoutth wrote:
         | Exactly. And restrictions on supply will force people to use
         | fossil fuels more efficiently, whereas just increasing
         | efficiency might actually make people use _more_ fossil fuels -
         | the Jevons paradox.
         | 
         | I would suggest the slogan 'Leave it in the ground!'
        
         | londons_explore wrote:
         | > If you want to eliminate fossil fuel use, and aren't just
         | posturing for political convenience, stopping production makes
         | a lot more sense than stopping emissions at point-of-use.
         | 
         | This. And the fact I haven't heard of any country saying "we'll
         | stop extracting coal/oil to help the environment" tells me
         | nobody really cares about the environment - everyone just wants
         | to look like they care to appease voters.
        
           | idontpost wrote:
           | [dead]
        
           | wil421 wrote:
           | Norway is the perfect example of this. Nationally they seem
           | to be moving towards EVs faster than others but they have no
           | problems producing oil.
           | 
           | The biggest lie told today is that pollution is our problem
           | and that we, as individuals, can make a decent impact.
           | Industry has to change to make any impact. It doesn't matter
           | how clean your cars or energy sources are if you keep pumping
           | fossil fuels out of the ground.
        
           | pjc50 wrote:
           | That would be leaving a substantial amount of money on the
           | table. Also, they're not necessarily the same countries or
           | people; there are for example anti-fracking movements in some
           | of the countries where that is happening.
        
           | omegabravo wrote:
           | Depriving people of energy can be just as catastrophic. While
           | not digging it up would be effective, I'm not sure some
           | people in developing* country would necessarily agree.
           | 
           | It's a complex topic, and Australia (where I live) has little
           | excuse to still be using coal fired energy so much. Politics
           | gets in the way of the obvious solutions.
           | 
           | I don't particularly like attributing CO2 to the source.
           | Unless we're going to stop counting CO2 emission internally,
           | because the oil has been extracted elsewhere.
           | 
           | edit: updated to developing, didn't realise the other was
           | offensive. My apologies
        
             | gostsamo wrote:
             | If you care about third-world countries, at least be polite
             | enough to call them developing countries.
        
               | anshorei wrote:
               | The third in "third-world" has the same meaning as the
               | third in "third-party cookies". They were the countries
               | that aligned themselves with neither the liberal (first)
               | or communist (second) worlds who were the principal
               | parties to the cold war. I wish people would stop getting
               | offended at things they don't understand.
        
               | Dylan16807 wrote:
               | > I wish people would stop getting offended at things
               | they don't understand.
               | 
               | What wasn't understood?
               | 
               | If the term third-world was being used to talk about cold
               | war political alignment, they wouldn't have objected. But
               | that's not how it was being used. The objection was
               | completely valid.
        
               | StevenRayOrr wrote:
               | Developing into what?
        
               | kevviiinn wrote:
               | Exploitation machines just like big daddy united states.
               | Unless they have resources we want ofc, then the CIA
               | simply puts in a complicit dictator!
        
               | mdp2021 wrote:
               | 'Third World' was coined - I believe, by Alfred Sauvy in
               | 1952 (following Pascal Boniface) - as an expression to
               | literally mean "non aligned in the dichotomy of NATO vs
               | Warsaw pact affiliance".
               | 
               | Stereotypes about qualities frequent in Countries of such
               | /political/ quality (such as said alleged "need for
               | development", following the poster) are not implied.
               | 
               | 'Third' is proper for "non-aligned"; 'developing' when
               | noting such state makes sense (special sense, since
               | growth seems to be a shared goal); some other term for
               | other cases - such as "rich in raw materials", etc.
        
               | gostsamo wrote:
               | I can come up with list of words that were coined with
               | some intention and gained another. Why a term was created
               | has nothing to do with how it is used and the gp comment
               | wasn't in the context of the cold war history.
        
               | tremon wrote:
               | So you are aware that the word has multiple connotations,
               | yet you chose to focus on the connotation that paints the
               | GP in the worst light... why, exactly?
        
               | Dylan16807 wrote:
               | > yet you chose to focus on the connotation that paints
               | the GP in the worst light...
               | 
               | Process of elimination.
               | 
               | There are two main connotations. The political one wasn't
               | being used, therefore it must be the other one.
               | 
               | "worst" out of two is not exactly a stretch...
        
               | mikrotikker wrote:
               | An inherent need to be offended on behalf of others, in
               | order to add some purpose to ones life.
        
               | gostsamo wrote:
               | Or I interpret it in the context it is used, referring to
               | poor countries as third world.
               | 
               | All this outrage about my remark is triggering my sense
               | of irony. Too bad I'm social drinker only.
               | 
               | PS: congrats to the gp who edited his comment.
        
               | mdp2021 wrote:
               | > _list of words_
               | 
               | No need because that is the normal process, involving
               | meaning and use - you could present the whole dictionary.
               | 
               | But it is none of our business if suddenly one individual
               | or a multitude start using 'mangrove' for something they
               | decide, and it gives no toss of credential to those who
               | after that decide that 'mangrove' does not mean
               | "mangrove".
        
             | somewhereoutth wrote:
             | With respect to CO2 emissions, it is quite simple. The
             | amount of CO2 released into the atmosphere is exactly
             | correlated with the amount of fossil fuel dug up (modulo
             | the proportion turned into plastics/whatever)
        
               | finnh wrote:
               | People will deforest their surroundings and burn wood to
               | keep warm.
        
               | kelseyfrog wrote:
               | This has the same energy as saying, "If we ban nukes,
               | then people will just TNT each other."
        
               | finnh wrote:
               | You think? People have to keep warm; they don't have to
               | bomb each other.
               | 
               | Anyway Europe is trying this wood instead of coal thing
               | right now:
               | 
               | https://www.nytimes.com/interactive/2022/09/07/world/euro
               | pe/...
        
               | londons_explore wrote:
               | Which is probably less harmful than burning oil. At least
               | that forest can regrow in 50 years, whereas the oil will
               | take millions of years to reform.
        
               | nick__m wrote:
               | According to The Guardian wood produces more CO2 than
               | other combustible per unit of heat1. It also produces as
               | much if not more soot than burning coal and a quantity of
               | NOx and SOx comparable to the combustion of natural gaz.2
               | It also produces copious amount of creosote a substance
               | known to cause cancer to workers in wood treatment
               | facilities.3
               | 
               | Mature trees that have reached a slower growth phase are
               | better used as construction material, that way the carbon
               | is sequestered for a long time and younger faster growing
               | trees that replace them can transform CO2 again.
               | 
               | 1) https://www.theguardian.com/environment/2018/mar/01/po
               | llutio...
               | 
               | 2) https://wood-energy.extension.org/what-are-the-air-
               | emissions...
               | 
               | 3) https://www.epa.gov/ingredients-used-pesticide-
               | products/creo...
        
               | finnh wrote:
               | Yes, burning wood may be more sustainable in that lens.
               | Whether it is less harmful is orthogonal. Heat pumps are
               | efficient in ways that wood fires cannot be, for example,
               | so oil -> electricity -> heat pump may well be far better
               | for the atmosphere than "burn some wood".
        
               | zaroth wrote:
               | It is not. Heating and cooking with wood is absolutely
               | deadly, particularly because by definition it's done, on
               | average, by the poorest households in structures without
               | proper ventilation.
        
               | nomel wrote:
               | Or, more directly, it's proportional to energy needs,
               | with the means of production that are currently
               | economical.
        
             | tda wrote:
             | No, depriving people of energe now is only a temporary
             | inconvenience. Depriving your children with a future is on
             | a whole other level. And that is exactly where we are
             | heading: climate catastrophe leading to famine, drought,
             | flooding, unmanageable sea level rise etc.
             | 
             | People could do with a lot less energy 40 years ago, I'm
             | sure we can get by just fine with a little less.
        
               | nostrebored wrote:
               | Inconvenience is a very poor guess. Energy restriction
               | kills people.
        
               | zaroth wrote:
               | More people than the climate, that's for sure.
               | 
               | Energy production levels must increase profoundly, while
               | costs must fall. This is already happening, and not even
               | that slowly in the grand scheme of things. Personal
               | energy generation and storage is already cheaper than the
               | grid as long as you can finance the upfront investment at
               | a reasonable rate.
               | 
               | I'll say it until I'm, err, green in the face. Make clean
               | energy cheaper and more abundant and it will be used.
               | Make climate friendly products more compelling and
               | cheaper than their dirtier substitutes, and the better
               | products will win on the open market.
               | 
               | Climate austerity is not so much "saving the future" but
               | rather "murdering the poor" and I find it morally
               | indefensible.
        
               | zizee wrote:
               | > No, depriving people of energe now is only a temporary
               | inconvenience.
               | 
               | Wow. This is so incredibly out of touch. The world
               | consists of more than just wealthy people driving large
               | cars, living in large houses, flying for vacation and
               | work.
               | 
               | Even poorer people in rich/developed countries people die
               | due to lack of cheap energy through heatstroke or
               | freezing. And that is just at a micro level. At a macro
               | level a huge amount of the world's food production relies
               | on cheap energy. Take it away and there will be
               | disastrous consequences.
        
               | seiferteric wrote:
               | Roughly half the people alive today exist because of
               | cheap energy. If you take that away, it will be more than
               | inconvenient.
        
               | tenpies wrote:
               | > depriving people of energe now is only a temporary
               | inconvenience.
               | 
               | Where do you live?
               | 
               | I mean this rhetorically, because for a couple billion of
               | people your definition of "minor inconvenience" is
               | literally death.
               | 
               | Ask a Canadian how inconvenient it is to go without heat
               | in the winter.
               | 
               | Ask an elderly Singaporean how inconvenient it is to go
               | without AC in the summer.
        
           | Aperocky wrote:
           | Or maybe those countries are just realistic and didn't want
           | to put people who already live paycheck to paycheck on a more
           | desperate economic footing.
           | 
           | There's no cake milord!
        
       | voytec wrote:
       | I highly recommend The Juice Media YT channel and their
       | caricatured series called "Honest Government Ads" [1]. They are
       | covering climate change and, among others, Australian government
       | incompetency in quite funny, provocative and slightly NSFW way.
       | 
       | [1] The Fires: https://www.youtube.com/watch?v=6BmbvTvFQ3g
       | 
       | [1] We're Fine: https://www.youtube.com/watch?v=cOmdkN6MOwU
       | 
       | [1] the Safeguard Mechanism:
       | https://www.youtube.com/watch?v=YrkE_VaMD4k
        
         | shidoshi wrote:
         | These are amazing.
        
         | aaron695 wrote:
         | [dead]
        
         | samstave wrote:
         | Love things like this!
         | 
         | "Brought to you by the Department of Thoughts and Prayers"
        
         | swarnie wrote:
         | I thought that named looked familiar and oh my, they are the
         | RAP NEWS guys.
         | 
         | https://www.youtube.com/watch?v=L6O6sM2Shok
         | 
         | I'm going to lose an hour of my life reminiscing about how
         | Youtube used to be and what it would have been.
        
           | kawsper wrote:
           | Sadly Hugo (the rapper) decided to go solo to focus on his
           | own career, he does some Rap News inspired videos now, it's
           | not quite the same without Giordano:
           | https://youtu.be/N4-FGp0vvck
        
           | rnk wrote:
           | Wow, that was excellent, thanks for the pointer. I also liked
           | "ultimate rap battles of history", but this rap had an
           | excellent political take on it. What kind of justice would we
           | want served on us eventually? We can do better than we have
           | so far. What great historical references, what did we do with
           | the nazis at Nuremberg, hire some at nasa, and hang some of
           | them. It's complicated but it's not wrong.
        
           | sterlind wrote:
           | Rap News was wasted on the early 2010s. Such a stable, boring
           | time compared to Brexit, Trump, Covid, the war in Ukraine,
           | ChatGPT, UAP disclosure. Why couldn't Robert Foster have been
           | born a few years later?
        
             | everybodyknows wrote:
             | Obama vs McCain was the most boring presidential election
             | ever. Because either way, we could be sure nothing too
             | crazy was going to happen in the White House for at least
             | four years. The media must have hated it.
        
               | officeplant wrote:
               | Never thought I would miss suit colors being
               | controversial.
        
             | bigger_cheese wrote:
             | I haven't thought about Robert Foster and Rap News for
             | years. I can still remember the rap about wikileaks
             | 
             | "Shattering schemes and the lies that we've been sold. By a
             | fourth estate that rolled over and did as it's told."
        
       | imdsm wrote:
       | So basically, chlorine compounds (hydrochloric acid) in the
       | atmosphere from CFCs (old aerosols, fridges) turn back into
       | chlorine thanks to the smoke particles, which wouldn't otherwise
       | happen, and the sun then causes the chlorine to break down in
       | sunlight to chlorine ions which "eat the ozone".
       | 
       | So it's a race against time between the ozone recovering through
       | the decay of these CFC-related harmless chemicals, and smoke from
       | wildfires making the ozone larger and not recovering.
       | 
       | Not all wildfires send smoke high enough though.
       | 
       | Interesting read!
        
         | brink wrote:
         | It sounds like a reason to do more controlled burns.
        
         | leoedin wrote:
         | They don't seem to answer the question of why the chlorine in
         | the atmosphere comes mainly from CFCs. What about all the
         | chlorine we use every day from e.g. bleach and swimming pools?
         | Does that not wreck the ozone layer because it never gets high
         | enough into the atmosphere?
        
           | Uehreka wrote:
           | I guess that would be nice background, but you can also find
           | the answer in like 5 minutes on Wikipedia.
           | 
           | https://en.wikipedia.org/wiki/Chlorofluorocarbon From the
           | section on Regulation:
           | 
           | > It turns out that one of CFCs' most attractive features--
           | their low reactivity--is key to their most destructive
           | effects. CFCs' lack of reactivity gives them a lifespan that
           | can exceed 100 years, giving them time to diffuse into the
           | upper stratosphere. Once in the stratosphere, the sun's
           | ultraviolet radiation is strong enough to cause the homolytic
           | cleavage of the C-Cl bond.
        
         | chris_va wrote:
         | They also eat methane, which is a potent greenhouse gas, so
         | it's not all bad
        
         | londons_explore wrote:
         | Hydrochloric acid is a rather common chemical, produced by
         | humans in the tens of millions of tonnes. I believe it is also
         | quite common in nature - for example, your stomach acid is
         | mostly hydrochloric acid.
        
           | Groxx wrote:
           | I'm not really sure what you're trying to imply here. E.g. I
           | don't usually vomit into the upper atmosphere.
        
             | Acidium01 wrote:
             | Are implying that you sometimes, albeit not usually, vomit
             | into the upper atmosphere?
        
             | epgui wrote:
             | If you ever change your approach, I would be interested in
             | photographing this.
        
         | gonzo41 wrote:
         | Take home lesson, start wearing sun hoodies.
        
       | aaron695 wrote:
       | [dead]
        
       | anoncow wrote:
       | I read recently that wildfires should be allowed to burn down
       | forests as smaller wildfires when prevented will result in larger
       | wildfires in the future (because of availability of more dry
       | organic fuel).
       | 
       | This combined with the current article makes me question the
       | approach Australia currently uses for wildfires.
       | 
       | Do we let small wildfires burn themselves out?
       | 
       | If yes, why are larger fires happening? Should we actively trim
       | forests periodically?
       | 
       | If no, why not?
        
         | MonkeyMalarky wrote:
         | Probably no one wants to take the risk or responsibility for
         | letting a small one burn in the event that they lose control.
         | No one gets in trouble for failing at trying to put it out. But
         | taking the decision to stand back? You'll get raked over coals
         | if it was the wrong decision.
        
       | fwlr wrote:
       | This article missed the chance to be much more interesting. While
       | the 2019-2020 Australian fires were undoubtedly catastrophic,
       | there have been other much worse fires in recent times. This one
       | killed 34 people; a decade prior, the bushfire season killed 5
       | times as many people, with 174 deaths. Four decades prior to
       | that, the bushfire season burned 5 times as much land area as the
       | 2019-2020 season, with over 15% of Australia's total land area
       | suffering fire damage.
       | 
       | It was the particularly intense burning, causing smoke to travel
       | much further than usual, that caused this season to loom so large
       | in people's minds. There are astounding figures, like that 80% of
       | the populace experienced days or weeks of heavily smoke-filled
       | air, or that it arguably killed as many as 450 people indirectly
       | through smoke inhalation interacting with existing respiratory
       | issues.
       | 
       | That intense burning was due mostly to the extremely high fuel
       | density of the particular areas that were on fire - forests
       | rather than grasslands. And the intense burning caused some
       | incredible phenomena: flames at ground level that would reach the
       | 20th floor of a skyscraper, radiant heat so extreme that you
       | could be standing on the other side of an 8-lane highway and it
       | would still give you 2nd degree degree burns in seconds and kill
       | you in minutes, fire fronts that travel for days at an average of
       | 6-8 miles an hour (even an ultra-marathon runner with a head
       | start could not stay ahead of the fire) and reach peak speeds
       | over 80mph (overtaking you in your car)... and all throughout,
       | the roar of a thousand jet engines as vegetation literally
       | exploded at the fire's approach - gaseous decomposition from the
       | ambient heat.
       | 
       | These fires were so intense that they launched smoke far higher
       | into the atmosphere than fires usually do, and so we got to see
       | some very unusual chemistry happen in the atmosphere.
       | 
       | I criticize the article for not being as interesting as it could
       | be because it exhibits the same malady as so much of the other
       | reporting on that bushfire season - the unique physics ignored in
       | favour of using the tragedy for political purposes.
        
         | magicalist wrote:
         | > _the unique physics ignored in favour of using the tragedy
         | for political purposes._
         | 
         | A new study attempting to explain a previously noticed
         | phenomenon in the ozone layer is "for political purposes",
         | seriously?
        
           | fwlr wrote:
           | Perhaps I am being a little unfair, there is a lot of
           | discussion of the physics and chemistry in the article. It
           | may seem like a wild leap to start talking about politics
           | because of a few paragraphs at the end of the article, to
           | which I offer the defense that the Australian media landscape
           | during that season was extremely, aggravatingly politicized.
           | I did try to make sure most of my comment was focused on the
           | interesting physics of extreme wildfires, leaving my
           | criticism as a one-line post-script at the end.
        
             | epgui wrote:
             | I agree with the other commenter and I would even say
             | you're completely failing to understand the medium,
             | context, and purpose of the piece of writing you're
             | criticizing.
        
             | magicalist wrote:
             | This isn't an article about how crazy wildfires are, it's
             | about the effect on the ozone layer, so not sure why any of
             | that would be relevant.
             | 
             | If the objection is that the lead author used the term
             | "climate change" out loud, the article seems to go out of
             | its way to be precise so the "any mention of climate change
             | is political" crowd won't be aroused:
             | 
             | > _Haywood would like to see the new chemistry integrated
             | into a climate model to forecast how ozone depletion might
             | be affected if intense wildfires become more common._
        
       | mistrial9 wrote:
       | Is it odd that a collection of non-USA researchers published
       | something similar a year earlier? the USA-based Nature
       | publication here is clearly paywalled so, hard to check the real
       | differences, or publication references.
       | 
       | https://acp.copernicus.org/preprints/acp-2022-247/acp-2022-2...
        
         | stateofinquiry wrote:
         | Not sure why you are focused on "USA" or "non-USA", but FYI:
         | Nature originated in the UK. Today, Springer-Nature is a major
         | international publisher. Springer (formerly Springer-Verlag)
         | originated in Germany, BTW.
        
         | tokai wrote:
         | No, not odd. Multiple of the authors of the paper you are
         | linking are cited in the Nature paper. Your paper also cites
         | prior research from Solomon - the first author of the Nature
         | article. It is unsurprising that the two papers don't reference
         | each other as they have been written and in review at the same
         | time.
         | 
         | They are all atmospheric researchers, so there is ofc a change
         | that their research subjects overlap.
        
       | CE02 wrote:
       | I think this is illustrative of a broader theme which is how
       | enduring and baked in a lot of our climate degradation is. As
       | much as the chlorine compounds _will_ decay, but not exactly
       | anytime soon. To think we won't have an issue with this again
       | before they're decayed would be ridiculous.
       | 
       | It's the same thing with the broader topic of global warming.
       | Absolutely we should seek to minimize greenhouse gas emissions,
       | that's a no brainer. But at our current stage in developement,
       | especially with some countries not exactly being team players in
       | this fight, a lot of the increase and future increase in
       | temperature is baked in (pardon the pun). As much as I'm all for
       | mitigation, much like the wildfires themselves, we will already
       | have plenty of consequences to come. That's why I'm so excited to
       | see focus shifting more towards mitigation and _resilience_. We
       | need to be prepared for the inevitable we've caused.
        
         | Uehreka wrote:
         | Personally, I wouldn't use the term "excited". The focus could
         | just as easily shift towards nationalist movements trying to
         | hoard resources and prevent refugees from warmer areas from
         | crossing borders. There's no guarantee that "resilience" is
         | going to come in the form of technical innovation or human
         | cooperation.
        
           | CE02 wrote:
           | As much as I see the concerns, the issues that could arise
           | from resilience are issues that can arise anywhere where
           | human self-interest is present which is just about
           | everything. I am excited for firms to start focusing on
           | greener office buildings, even if their are some using it to
           | greenwash for optics.
           | 
           | Though as I mentioned, I completely see your point. I guess I
           | should rephrase to "I am excited that there is the
           | _potential_ for positive action in this space.
        
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