Live data from Hacker News

Earth's clouds are shrinking, boosting global warming

science.org

21–30 of 146 posts

Re: Earth's clouds are shrinking, boosting global warming

#21
It's worth noting Neptune clouds are doing similar due to the suns 11 year solar cycle.

https://science.nasa.gov/missions/hubble/neptunes-disappeari...

AI summary; "Yes, astronomers have observed that Neptune's prominent clouds have largely disappeared, and NASA scientists suggest this phenomenon is linked to the sun's 11-year solar cycle and its impact on Neptune's atmosphere"

Re: Earth's clouds are shrinking, boosting global warming

#22
post #10

Earlier quoted context omitted.

[flagged]

You really think we can unite earth to do something about it? Did u witness the world wide right wing shift? There are people still not believing climate change is real...

Now that the US has removed itself from the world stage, I think it's possible something useful about climate change can happen. Likely? Still no. But, possible? Yes, in a way that was never going to happen before.

China and the EU are taking over the leadership position that the US inexplicably resigned from. China and the EU take climate change and renewable/sustainable energy technology investment and adoption waaaaaaaay more seriously than the US did. The US has been (and continues to be) actively hostile to it, save for a few contrary blips.

The most powerful climate change denialist and impediment to progress, by far, to doing something to address climate denialist just self-immolated. There's a silver lining in there.

Re: Earth's clouds are shrinking, boosting global warming

#23
post #5

> the team has turned to a single satellite, NASA’s Terra, which has been monitoring the planet for nearly a quarter-century. Looking at the same cloud systems, the team found exactly the same trends, with cloud coverage falling by about 1.5% per decade, Tselioudis says. “It’s only now that the signal seems to be coming out of the noise.” Bjorn Stevens, a climate scientist at the Max Planck Institute for Meteorology,…

Including inland mountains 700km from the coast like in Vietnam and North Carolina which both got destroyed last year as tropical depressions dumped historical levels of rain.

Re: Earth's clouds are shrinking, boosting global warming

#24

It's worth noting Neptune clouds are doing similar due to the suns 11 year solar cycle. https://science.nasa.gov/missions/hubble/neptunes-disappeari... AI summary; "Yes, astronomers have observed that Neptune's prominent clouds have largely disappeared, and NASA scientists suggest this phenomenon is linked to the sun's 11-year solar cycle and its impact on Neptune's atmosphere"

Not the same thing. According to this article, Earth's cloud cover has been shrinking for decades.

Re: Earth's clouds are shrinking, boosting global warming

#25
post #13
post #10

Earlier quoted context omitted.

You really think we can unite earth to do something about it? Did u witness the world wide right wing shift? There are people still not believing climate change is real...

[flagged]

China also has more people than the US and the EU combined, and per capita it pollutes way less than the US.

Additionally, the left is not in charge almost anywhere in the EU.

Re: Earth's clouds are shrinking, boosting global warming

#26
post #10

Earlier quoted context omitted.

You really think we can unite earth to do something about it? Did u witness the world wide right wing shift? There are people still not believing climate change is real...

Now that the US has removed itself from the world stage, I think it's possible something useful about climate change can happen. Likely? Still no. But, possible? Yes, in a way that was never going to happen before. China and the EU are taking over the leadership position that the US inexplicably resigned from. China and the EU take climate change and renewable/sustainable energy technology investment and adoption waa…

This is a basic reductionist take, it's really easy to group hundreds of millions of people into one group, right? We're all mourning the loss of the US government, but the people are still here, we're just blinking for help.

Re: Earth's clouds are shrinking, boosting global warming

#27

How large a scale and with how many countries participating would cloud seeding be able to reverse these effects? Last I remember it was only a few countries in Asia that were attempting anything of the sort.

Disregard the obvious environmental risks of spraying silver iodide in the air, cloud seeding will artificially redirect rainfall in specific areas, which may deprive downstream regions of water, harming biodiversity. Note that cloud seeding is currently used for drought management, not global warming mitigation.

Re: Earth's clouds are shrinking, boosting global warming

#28
post #19

Earth gets over 170,000 terawatts of solar energy every day—10,000 times more than humanity uses. Losing just a fraction of our cloud cover means a massive, invisible throttle is coming off the climate system. If this trend holds, we’re not just warming—we’re stepping on the gas.

terawatt is not an energy unit.

R̶e̶a̶d̶ ̶t̶h̶e̶ ̶c̶o̶n̶t̶e̶x̶t̶…̶

- A̶ ̶w̶a̶t̶t̶ ̶i̶s̶ ̶d̶e̶f̶i̶n̶e̶d̶ ̶a̶s̶ ̶1̶ ̶j̶o̶u̶l̶e̶ ̶p̶e̶r̶ ̶s̶e̶c̶o̶n̶d̶

̶ A̶ ̶w̶a̶t̶t̶ ̶f̶o̶r̶ ̶1̶ ̶s̶e̶c̶o̶n̶d̶ ̶t̶h̶e̶r̶e̶f̶o̶r̶e̶ ̶e̶q̶u̶a̶l̶s̶ ̶1̶ ̶j̶o̶u̶l̶e̶,̶ ̶a̶ ̶m̶e̶a̶s̶u̶r̶e̶ ̶o̶f̶ ̶e̶n̶e̶r̶g̶y̶

- A̶ ̶T̶e̶r̶a̶w̶a̶t̶t̶ ̶f̶o̶r̶ ̶a̶ ̶d̶a̶y̶ ̶i̶s̶ ̶t̶h̶e̶r̶e̶f̶o̶r̶e̶ ̶a̶l̶s̶o̶ ̶a̶ ̶m̶e̶a̶s̶u̶r̶e̶ ̶o̶f̶ ̶e̶n̶e̶r̶g̶y̶.̶

[edit: The earth receives 14.9 ZettaWatts of solar power per day, and 173 Petawatts per second, I was reading it as 173 PW over a day, in which case the above works fine. Mea culpa]

See: https://gosolarquotes.com.au/amount-of-solar-energy-hitting-...

Re: Earth's clouds are shrinking, boosting global warming

#29

How large a scale and with how many countries participating would cloud seeding be able to reverse these effects? Last I remember it was only a few countries in Asia that were attempting anything of the sort.

Cloud seeding aims to increase precipitation, not to increase evaporation. It might actually reduce cloud cover overall, since precipitation causes moisture to fall out of the air.

Re: Earth's clouds are shrinking, boosting global warming

#30
post #25
post #13

Earlier quoted context omitted.

[flagged]

China also has more people than the US and the EU combined, and per capita it pollutes way less than the US. Additionally, the left is not in charge almost anywhere in the EU.

>Additionally, the left is not in charge almost anywhere in the EU.

Basically an overwhelming majority of the countries + the commission?

Post reply on HN