30 Jul 2022 7:03 pm
Several board members just lost a good bit of money betting against you (or would have, could they have found a taker). This is the first time that you have ever made a science claim and linked to peer reviewed science to back it up.ScottMon » 29 Jul 2022, 8:57 pm » wrote: ↑ Pretty sure there was a hole. It's been well documented for decades.
First Direct Proof of Ozone Hole Recovery Due to Chemicals Ban | NASA
Well, that is technically false - you linked to a NASA puff piece. But the puff piece WAS backed by a link, and the link DID lead to a peer reviewed study, and the plain language of the abstract DID support your thesis - a once-in-your-posting-history trifecta. Well done.
As a reward, I will share a portion of the abstract, which is written by one of the scientists on the team and signed by every:
More at link: https://agupubs.onlinelibrary.wiley.com ... 17GL074830The Antarctic ozone hole is healing slowly because levels of the man-made chemicals causing the hole have long lifetimes. We use Microwave Limb Sounder (MLS) satellite data to measure O3 over Antarctica at the beginning of winter and then compare it to O3 near the end of winter to calculate depletion. During this period, nearly all O3 change is due to depletion. MLS also measures HCl, and when ozone levels are very low, nearly all the reactive chlorine species (Cly) are converted to HCl. Cly varies a lot from year to year from atmospheric motions. Fortunately, MLS measures nitrous oxide (N2O), a long-lived gas that also varies with the motions. Using the ratio of Cly to N2O, we find that there is less chlorine now than 9 years ago and that Cly has decreased on average about 25 parts per trillion/yr (0.8%/yr). The O3 depletion we calculate from MLS data responds to changes in the Cly levels, and the ratio of the change in ozone loss to the change in Cly matches model calculations. All of this is evidence that the Montreal Protocol is working—the Cly is decreasing in the Antarctic stratosphere and the ozone destruction is decreasing along with it.