What would happen to Earth’s climate is we blocked off the southern circumpolar current by building a barrier between the tip of South America and the Antarctic Peninsular?

Let’s just assume we can build such a barrier within 50 years.

party_pants said:

What would happen to Earth’s climate is we blocked off the southern circumpolar current by building a barrier between the tip of South America and the Antarctic Peninsular?

Let’s just assume we can build such a barrier within 50 years.

That was the situation during Gondwana and then the climate was much warmer.

PermeateFree said:

party_pants said:

What would happen to Earth’s climate is we blocked off the southern circumpolar current by building a barrier between the tip of South America and the Antarctic Peninsular?

Let’s just assume we can build such a barrier within 50 years.

That was the situation during Gondwana and then the climate was much warmer.

Yeah, but pretty much everything was in a different place then.

party_pants said:

PermeateFree said:

party_pants said:

What would happen to Earth’s climate is we blocked off the southern circumpolar current by building a barrier between the tip of South America and the Antarctic Peninsular?

Let’s just assume we can build such a barrier within 50 years.

That was the situation during Gondwana and then the climate was much warmer.

Yeah, but pretty much everything was in a different place then.

The current did not circulate around Antarctica before Australia broke away from Gondwana. The water drawn into this new circulating current was cold and so reduced the temperature around Antarctica, where in the process most of its biota died off.