Comment by myshpa | Hacker News Reader

Comment by myshpa | Hacker News Reader

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https://essd.copernicus.org/articles/15/1675/2023/

We've added the energy of 25 billion nuclear bombs to the Earth system in just the last 50 years.

https://www.cbsnews.com/news/climate-change-ocean-heat-new-r...

Last year, researchers say, the ocean heated up an amount equal to the energy of five of those bombs detonating underwater "every second for 24 hours a day for the entire year."

... the ocean in 2022 was "the hottest ever recorded by humans." It increased by 10.9 Zetta Joules, an amount of energy equivalent to the atomic bomb dropped on Hiroshima and an amount of heat about 100 times more than the electricity generated worldwide in 2021

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This year is off the charts completely.

DATA RELEASED TODAY. North Atlantic Sea Surface Temperature Anomaly 1982 - 2023 (20/7-2023)

https://preview.redd.it/7ibmzvsi6ddb1.jpg?width=680&format=p...

THE DAY BEFORE (19/7-2023). North Atlantic Sea Surface Temperature Anomaly 1982 - 2023

https://preview.redd.it/payaxtpj6ddb1.jpg?width=1080&format=...

Daily Sea Surface Temperatures in the North Atlantic (20/7-2023)

https://preview.redd.it/q9ejy5xl6ddb1.jpg?width=1100&format=...

I wonder if we could just stop flying planes for a while (which might lead to global cooling, like the days after 9/11/2001)

There's a BBC documentary that suggest contrails and pollutants help block the sunlight from reaching the earth, and that the airspace lockdown lead to a slight warming: https://www.dailymotion.com/video/x7p6z05

But newer research says the Covid reduction of flights caused only very small warming (and not even cooling):

https://en.wikipedia.org/wiki/Global_dimming:

> The global response to the 2020 coronavirus pandemic led to a reduction in global air traffic of nearly 70% relative to 2019. Thus, it provided an extended opportunity to study the impact of contrails on regional and global temperature. Multiple studies found "no significant response of diurnal surface air temperature range" as the result of contrail changes, and either "no net significant global ERF" (effective radiative forcing) or a very small warming effect. On the other hand, the decline in sulfate emissions caused by the curtailed road traffic and industrial output during the COVID-19 lockdowns did have a detectable warming impact: it was estimated to have increased global temperatures by 0.01–0.02 °C initially and up to 0.03 °C by 2023, before disappearing.

The question is did it have an ozone effect relative to say Mt Pinatubo perturbation

We haven't added anything. The sun did. We need new methods to control it.

We prevented it from escaping back into space. The sun didn't do anything different, we did.

Who told you that?

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