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From: Paul S Person <psperson@old.netcom.invalid>
Newsgroups: rec.arts.sf.written
Subject: Re: Whoops! The Atlantic Makes Trump Look EPIC In Cover Intended as a Smear
Date: Fri, 20 Sep 2024 08:44:51 -0700
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On Fri, 20 Sep 2024 10:05:53 +0200, D <nospam@example.net> wrote:

>
>
>On Thu, 19 Sep 2024, Lynn McGuire wrote:
>
>> On 9/19/2024 3:03 PM, quadibloc wrote:
>>> On 9/18/2024 2:49 PM, D wrote:
>>>=20
>>>> Why was Svante Arrhenius wrong about CO2?
>>>=20
>>>> Overestimation of Temperature Increase
>>>> One of the primary reasons
>>>> Arrhenius was considered wrong about CO2=92s impact on temperature =
is that
>>>> he significantly overestimated the effect of a doubling of CO2
>>>> concentration.
>>>=20
>>> I'm not aware that scientists concerned about global warming
>>> are going around insisting Svante Arrhenius' estimates were
>>> right.
>>>=20
>>>> Neglecting Water Vapor=92s Dominance
>>>> Another critical factor in
>>>> Arrhenius=92s miscalculations was his underestimation of water =
vapor=92s
>>>> role as a greenhouse gas. Water vapor constitutes a much larger =
portion
>>>> of the atmosphere compared to CO2 and has a more significant impact =
on
>>>> climate due to its higher concentration and ability to absorb heat
>>>> across various wavelengths. While Arrhenius recognized CO2 as an
>>>> important greenhouse gas, he did not adequately emphasize that its
>>>> effects would be overshadowed by those of water vapor.
>>>=20
>>> Now, this one is a total red herring.
>>>=20
>>> The reason should be obvious.
>>>=20
>>> What determines the level of water vapor in the atmosphere? Is it
>>> being increased, say, by irrigation projects spraying water on
>>> crops, which we should curtail before worrying about fossil
>>> fuels?
>>>=20
>>> No. The amount of water vapor in the atmosphere... is mostly due to
>>> evaporation from the oceans and lakes and rivers. Which is controlled
>>> by global temperatures.
>>>=20
>>> So water vapor is part of a feedback loop that amplifies the effects
>>> of extra carbon dioxide in the atmosphere. Because the carbon dioxide
>>> level is a *free* variable, that we're affecting significantly by our
>>> use of fossil fuels.
>>>=20
>>> John Savard
>>
>> We have extra water in the upper atmosphere right now due to the =
underwater=20
>> volcano spewing water vapor, "Tonga Eruption May Temporarily Push =
Earth=20
>> Closer to 1.5=B0C of Warming"
>> =
https://eos.org/articles/tonga-eruption-may-temporarily-push-earth-closer=
-to-1-5c-of-warming
>>
>> "The underwater eruption of Hunga Tonga=96Hunga Ha=91apai sent =
megatons of water=20
>> vapor into the stratosphere, contributing to an increase in global =
warming=20
>> over the next 5 years."
>>
>> Lynn
>
>Let me just add a note here, that this was a natural process and not man=
=20
>made.

Then perhaps it should be pointed out that it is also /temporary/ and
not part of the secular increase in global temperature, which is not
temporary.
--=20
"Here lies the Tuscan poet Aretino,
Who evil spoke of everyone but God,
Giving as his excuse, 'I never knew him.'"