Sea-level rise linked to human activities

[Still Waters]

New research by Rutgers scientists reaffirms that modern sea-level rise is linked to human activities and not to changes in Earth's orbit.

Surprisingly, the Earth had nearly ice-free conditions with carbon dioxide levels not much higher than today and had glacial periods in times previously believed to be ice-free over the last 66 million years, according to a paper published in the journal Science Advances.

"Our team showed that the Earth's history of glaciation was more complex than previously thought," said lead author Kenneth G. Miller, a Distinguished Professor in the Department of Earth and Planetary Sciences in the School of Arts and Sciences at Rutgers University-New Brunswick. "Although carbon dioxide levels had an important influence on ice-free periods, minor variations in the Earth's orbit were the dominant factor in terms of ice volume and sea-level changes—until modern times."

https://phys.org/news/2020-05-modern-sea-level-linked-human-rutgers.html

https://advances.sciencemag.org/content/6/20/eaaz1346

[XenoFish]

Well excuse me for breathing.

[Horta]

9 hours ago, 19_Kilo said:

Then again, you could take every human on the planet and fit them into a cube no larger than 1.5 miles on each side and then take this cube and drop it in the middle of the Pacific Ocean, and the sea levels would not rise one inch.

We are ants on a boulder that's comparatively  four miles wide in diameter.

We don't make sea levels rise. We are too inconsequential.

Cyclical climate change does.

Key word: cyclical.

As are all things in Nature.

I think you missed this part of the article...

"New research by Rutgers scientists reaffirms that modern sea-level rise is linked to human activities and not to changes in Earth's orbit."

Milankovitch cycles are already known and don't explain current trend of rising sea level, that no "natural cycle" can be seen to account for it is one of the reasons why it is considered anthropogenic. This paper seems to study the relationship between such cycles re sea level and carbon in more depth. It doesn't say that humans are having no impact.

Human activity definitely seems to be affecting average temperature, climate and sea levels. As well as dramatic rise in species extinctions. So dramatic that some scientists claim we are in the midst of another "extinction event" comparable to, or possibly worse than previous ones.

 

 

Edited May 17, 2020 by Horta

[Tatetopa]

9 hours ago, 19_Kilo said:

We don't make sea levels rise. We are too inconsequential.

Once that was true.  Once Lebanon was famous for its cedar trees too, which supposedly made excellent beams for temples.  Not so much anymore.

[Essan]

6 hours ago, Tatetopa said:

Once that was true.  Once Lebanon was famous for its cedar trees too, which supposedly made excellent beams for temples.  Not so much anymore.

Nah, all the trees disappeared due to natural cyclical processes.   Obvious, innit!  Humans had nothing to do with it cos we're inconsequential.   Humans aren't responsible for any of the plastic in the Antarctic either ....   

[Essan]

On a more serious note, as in indication of just how inconsequential humans affect the world:   200 years ago there was an estimated 5,000,000,000 passenger pigeons in the USA.

How many are there today?   And why?    

[Piney]

4 hours ago, Essan said:

On a more serious note, as in indication of just how inconsequential humans affect the world:   200 years ago there was an estimated 5,000,000,000 passenger pigeons in the USA.

How many are there today?   And why?    

And their population exploded only after close to 1,000,000 Indians died off. 

[Dustyrose33]

On 5/16/2020 at 7:45 PM, Horta said:

Human activity definitely seems to be affecting average temperature, climate and sea levels. As well as dramatic rise in species extinctions. So dramatic that some scientists claim we are in the midst of another "extinction event" comparable to, or possibly worse than previous ones.

 

 

So true.   Too many cars, factories and window air conditioners which put a lot of heat out the back of them.   Also, too much deforestation.   It's all having an impact on the earth.