Bergensis
Bergensis t1_jac9m84 wrote
Reply to comment by macross1984 in Antarctic sea ice likely shrunk to a record low last week, US researchers said Monday, its lowest extent in the 45 years of satellite record-keeping by DoremusJessup
This article is about the Antarctic ice.
Bergensis t1_ja2sbz6 wrote
Reply to comment by WerewolfHowls in Amazon faces a lawsuit over products that fuel the donkey skin trade. by tandemuis365
> It IS endangered...they're illegally sourcing African Wild Asses.
There is nothing in the article that suggests that they are. The article mentions that South Africa is involved in the trade. The geographical range of African wild asses is on, and just north of, the Horn of Africa, thousands of kilometres away. The article mentions that millions of donkeys are slaughtered each year, while there are just a few hundred wild African Donkeys in existence.
Bergensis t1_iujwuwm wrote
Reply to comment by Suessbot in Ozone Hole Continues Shrinking in 2022, NASA and NOAA Scientists Say | Annual Antarctic ozone hole over the South Pole was slightly smaller than last year and generally continued the overall shrinking trend of recent years. by yourSAS
> No ody knew about it in the 80s unless you worked in the field or read the published studies.
I wouldn't have thought that Neil Young and Warren Zevon had the time and inclination to read the published studies. Both these songs were released in 1989:
Bergensis t1_iujvd79 wrote
Reply to comment by Suessbot in Ozone Hole Continues Shrinking in 2022, NASA and NOAA Scientists Say | Annual Antarctic ozone hole over the South Pole was slightly smaller than last year and generally continued the overall shrinking trend of recent years. by yourSAS
> I did.
Which ones?
While I didn't read scientific publications in the 1980s, I did watch the news, and the signing of the Vienna Convention for the Protection of the Ozone Layer would have made the news.
>And that hole was already closing by the time you heard about it. They were theorizing that it was a natural phenomenon. They know a little better now but it still seems to close every decade or so.
The hole is constantly opening and closing, as there are natural seasonal variations. It appears that it is a natural phenomenon that is made worse by human pollution. While the fight against ozone-depleting substances have largely been a success, there have been setbacks:
Bergensis t1_iue1t1c wrote
Reply to comment by NessyComeHome in Ozone Hole Continues Shrinking in 2022, NASA and NOAA Scientists Say | Annual Antarctic ozone hole over the South Pole was slightly smaller than last year and generally continued the overall shrinking trend of recent years. by yourSAS
> Phase out started in 2010 and no new manufacturing as of 2020.
The phase out started much before that. In 1978 the use of CFC as a propellant for aerosol cans was banned in the USA.
> R-22 is being phased out in HVAC. Prices for reclaimed r-22 shot up because there is no new manufacturing of r-22 as of 2020. Hcfc have a lower Ozone Depletion Potential than cfc's, but it isn't a perfect 0, for r-22 it's .05 with a Greenhouse Warming Potential of 1700, where r-134a has an odp of 0 and a gwp of 1300.
I'd like to add that the phase out of R134a in favour of R1234yf in car A/C began in 2012.
Bergensis t1_iue0pjf wrote
Reply to comment by Suessbot in Ozone Hole Continues Shrinking in 2022, NASA and NOAA Scientists Say | Annual Antarctic ozone hole over the South Pole was slightly smaller than last year and generally continued the overall shrinking trend of recent years. by yourSAS
> when news like this was only reported in print in scientific rags.
I was a teenager in the 80s, and I was aware of the hole in the ozone layer, and that CFC caused it. I didn't read scientific rags back then.
Bergensis t1_jaca90w wrote
Reply to comment by CompositeBeing in Antarctic sea ice likely shrunk to a record low last week, US researchers said Monday, its lowest extent in the 45 years of satellite record-keeping by DoremusJessup
> Sea ice = floating ice. Its melting does not increase the average sea level.
As the article states:
"...the sea ice rings Antarctica's massive ice shelves, the extensions of the freshwater glaciers that threaten catastrophic sea level rise over centuries if they continue melting as global temperatures rise."
I might also add that ice reflects more sunshine than sea, and a reduction of ice, whether it is on land or sea, reduces the amount of solar energy that is reflected back into space:
https://oceanservice.noaa.gov/facts/sea-ice-climate.html