[Philip P. Benjamin]
    No simulations, please! Show the concrete CO2 threshold for threat. 
Thousands of forest fires (for over 5000 years of records)have much arger than 
petroleum burning (50 past + 100 future years).
Philip P. Benjamin

-----Original Message-----
From: everything-list@googlegroups.com <everything-list@googlegroups.com> On 
Behalf Of smitra
Sent: Sunday, August 21, 2022 6:26 PM
To: everything-list@googlegroups.com
Subject: Re: What Threshold Threat of CO2

https://nam12.safelinks.protection.outlook.com/    
"Climate physicists at the California Institute of Technology performed a 
state-of-the-art simulation of stratocumulus clouds, the low-lying, blankety 
kind that have by far the largest cooling effect on the planet. 
The simulation revealed a tipping point: a level of warming at which 
stratocumulus clouds break up altogether. The disappearance occurs when the 
concentration of CO2 in the simulated atmosphere reaches 1,200 parts per 
million - a level that fossil fuel burning could push us past in about a 
century, under "business-as-usual" emissions scenarios. In the simulation, when 
the tipping point is breached, Earth's temperature soars 8 degrees Celsius, in 
addition to the 4 degrees of warming or more caused by the CO2 directly.

Once clouds go away, the simulated climate "goes over a cliff," said Kerry 
Emanuel, a climate scientist at the Massachusetts Institute of Technology. A 
leading authority on atmospheric physics, Emanuel called the new findings "very 
plausible," though, as he noted, scientists must now make an effort to 
independently replicate the work.

To imagine 12 degrees of warming, think of crocodiles swimming in the Arctic 
and of the scorched, mostly lifeless equatorial regions during the PETM. If 
carbon emissions aren't curbed quickly enough and the tipping point is 
breached, "that would be truly devastating climate change," said Caltech's 
Tapio Schneider, who performed the new simulation with Colleen Kaul and Kyle 
Pressel.

Huber said the stratocumulus tipping point helps explain the volatility that's 
evident in the paleoclimate record. He thinks it might be one of many unknown 
instabilities in Earth's climate. "Schneider and co-authors have cracked open 
Pandora's box of potential climate surprises," he said, adding that, as the 
mechanisms behind vanishing clouds become clear, "all of a sudden this enormous 
sensitivity that is apparent from past climates isn't something that's just in 
the past. It becomes a vision of the future.""

Saibal



On 18-08-2022 16:42, Philip Benjamin wrote:
> WHAT THRESHOLD THREAT OF CO2 FROM CLIMATE CHANGE?
> 
> https://nam12.safelinks.protection.outlook.com/   
  effects (sunspots, solar storms etc.)
> etc. will certainly affect the wind systems of the globe. That has
> nothing to do with CO2 quantities!! The pseudoscience of climatology
> (not meteorology) which is now an integral part of a worldwide pagan
> religion, contrary to the  Augustinian 'awakened' consciousness.
> ( 
>     An estimated 1,050 wildfires worldwide produced global CO2
> emissions of 76 billion tons in 2021. That is on the average ~ 3
> forest  fires each day, producing ~ 78 billion tons of CO2/day. The
> petroleum burning per year is 5.1/ 150 =  ~  1/30 = ~ 0.03 trillion
> tons of CO2 = 3 x 10^-2 x10^12 = ~ 30 billion tons of CO2/year. Which
> is a threat?   What is the threshold of CO2 doom?
> 
>         https://nam12.safelinks.protection.outlook.com/     
> [1]. The climatic SNOW LINE is about 15,000 ft above sea level at the
> equator and 19,000 ft in the Himalayas. It is progressively lower as
> the latitude increases, to just below 9,800 ft in the Alps. The
> reduced volume of melting of _glaciers & icebergs (about 90% below the
> water surface) can only lower the sea level.  The melting of_ mountain
> ice alone cannot dangerously raise the sea level; for those very
> powerful forces (not by CO2 !!) will be required to bring up the
> humongous subterranean water beds.
> 
>        Destroy the petroleum industries, then even the battery
> industry will be destroyed because some of the 6000 byproducts of
> petroleum are indispensable for battery production also. Industries
> cannot keep an oil refinery open just for batteries! Automobile
> battery alone may then cost prohibitively high.
> 
> Philip Benjamin 

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