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Topic: Weather, Climate, Environment, and Energy

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Cincydawg

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Re: Weather, Climate, Environment, and Energy
« Reply #7462 on: April 20, 2023, 02:02:48 PM »
The levels were probably ppb, I'm guessing.  In that case, we did develop viable alternatives, CHFCs et al. that are acceptable and apparently do less damage.  Ozone is condiered a pollutant at low altitudes (troposphere).  And of course the amount of ozone up high is very small as well in  concentration, but has a significant effect.

Cincydawg

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Re: Weather, Climate, Environment, and Energy
« Reply #7463 on: April 20, 2023, 02:05:56 PM »
About 90 percent of the ozone in the atmosphere is contained in the stratosphere. Ozone concentrations are greatest between about 20 and 40 kilometres (66,000 and 131,000 ft), where they range from about 2 to 8 parts per million.

When chlorine and bromine atoms come into contact with ozone in the stratosphere, they destroy ozone molecules. One chlorine atom can destroy over 100,000 ozone molecules before it is removed from the stratosphere. Ozone can be destroyed more quickly than it is naturally created.
Some compounds release chlorine or bromine when they are exposed to intense UV light in the stratosphere. These compounds contribute to ozone depletion, and are called ozone-depleting substances (ODS). ODS that release chlorine include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), carbon tetrachloride, and methyl chloroform. ODS that release bromine include halons and methyl bromide. Although ODS are emitted at the Earth’s surface, they are eventually carried into the stratosphere in a process that can take as long as two to five years.
In the 1970s, concerns about the effects of ozone-depleting substances (ODS) on the stratospheric ozone layer prompted several countries, including the United States, to ban the use of chlorofluorocarbons (CFCs) as aerosol propellants. However, global production of CFCs and other ODS continued to grow rapidly as new uses were found for these chemicals in refrigeration, fire suppression, foam insulation, and other applications.




Cincydawg

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Re: Weather, Climate, Environment, and Energy
« Reply #7464 on: April 20, 2023, 03:44:08 PM »

FearlessF

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Re: Weather, Climate, Environment, and Energy
« Reply #7465 on: April 20, 2023, 03:51:56 PM »
I'm not going to read it
"Courage; Generosity; Fairness; Honor; In these are the true awards of manly sport."

utee94

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Re: Weather, Climate, Environment, and Energy
« Reply #7466 on: April 20, 2023, 03:55:06 PM »
TL; DR

Cincydawg

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Re: Weather, Climate, Environment, and Energy
« Reply #7467 on: April 20, 2023, 04:10:40 PM »
It is  termed a resolution, which means squat.

Cincydawg

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CatsbyAZ

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Re: Weather, Climate, Environment, and Energy
« Reply #7469 on: April 21, 2023, 12:48:25 PM »
India and Pakistan are enduring a second straight Spring of brutal heatwaves. If anybody remembers, thousands died last May in Pakistan when temperatures sustained levels dangerous to human life.

This time around the humidity isn't helping, and I'm noticing discussion of the Wet Bulb threshold that when surpassed is fatal. From a Guardian Article last year:

"If you slide a wet cloth over the bulb of a thermometer, the evaporating water from the cloth will cool the thermometer down. This lower temperature is the WBT, which cannot go above the dry temperature. If humidity in the surrounding air is high, however – meaning the air is already more saturated with water – less evaporation will occur, so the WBT will be closer to the dry temperature."

"When do wet-bulb temperatures get dangerous? Concern often centres on the “threshold” or “critical” WBT for humans, the point at which a healthy person could survive for only six hours. This is usually considered to be 35C, approximately equivalent to an air temperature of 40C with a relative humidity of 75%."

"...the number of times that a WBT of 30C was reached – still considered an extreme humidity and heat event – more than doubled between 1979 and 2017. There were about 1,000 occurrences of a 31C WBT, and about a dozen above 35C, in Pakistan, India, Saudi Arabia, Mexico and Australia."

Cincydawg

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Re: Weather, Climate, Environment, and Energy
« Reply #7470 on: April 21, 2023, 01:03:55 PM »
Majority in poll say climate change needs to be addressed ‘right now’ | The Hill

While 91 percent of Democrats said climate change requires urgent attention, 44 percent of Republicans said the same, according to the CBS News poll.

Nearly three-quarters — 74 percent — of Americans between 18 and 44 years old said climate change needs to be addressed either now or in the near future, while 64 percent of those between 45 and 64 years old and 56 percent of those over 65 years old said the same.


FearlessF

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Re: Weather, Climate, Environment, and Energy
« Reply #7471 on: April 21, 2023, 02:51:04 PM »
100% could be in agreement that something needs to be addressed

that doesn't mean that anything worthwhile will happen
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FearlessF

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Re: Weather, Climate, Environment, and Energy
« Reply #7472 on: April 22, 2023, 08:52:41 AM »
Extreme weather is nearly universal experience: AP-NORC poll

https://apnews.com/article/poll-climate-change-extreme-weather-221a56606f54f8dac90c9f654e208af9

article says nothing about weather universe wide, not even world wide, only polled people in the united states
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Cincydawg

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Re: Weather, Climate, Environment, and Energy
« Reply #7473 on: April 22, 2023, 08:55:50 AM »
Overall, about 8 in 10 U.S. adults say that in the past five years they have personally felt the effects of extreme weather, such as extreme heat or drought, according to the poll. Most of them – 54% of the public overall – say what they experienced was at least partly a result of climate change. 

Well, duh.  I imagine nearly everyone did back in 1930 as well.  Yeah, I recall a really bad thunderstorm here, what, 3 years ago?"

Climate and weather are different things.

FearlessF

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Re: Weather, Climate, Environment, and Energy
« Reply #7474 on: April 22, 2023, 09:00:40 AM »
I also really hope they are adjusting for inflation with their threshold 
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FearlessF

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Re: Weather, Climate, Environment, and Energy
« Reply #7475 on: April 22, 2023, 09:05:18 AM »
a damp 32 degrees here this morning with just enough wet snow to cover the ground white

tee times for the first golf tournament of the season pushed back an hour.  Starting at 10am instead of 9.
I just smart enough to request a later time and now tee off at 2:15pm

20mph wind expected
feels like temp of 24 expected at 10am

I'd rather be in Lincoln welcoming back Fearless Frankie Solich and helping break the curse
"Courage; Generosity; Fairness; Honor; In these are the true awards of manly sport."

 

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