Climate change: 400-year record heat threat to Great Barrier Reef | BBC News

A study of samples taken from inside the bodies of centuries-old coral has revealed the threat climate change now poses to the Great Barrier Reef.

Researchers in Australia say temperatures in and around the vast coral reef over the past decade are the highest recorded in 400 years.

Extreme heat has already caused five mass bleaching events in the past nine years alone.

Writing in the journal Nature the scientists behind the study said increased temperatures, driven by climate change, now pose an “existential threat” to this natural wonder of the world.

#Climate #CoralBleaching #BBCNews

[LiamJKelly-gunu]

The Great Barrier Reef is one of the most amazing places on the planet. A true underwater wonderland with a fascinating ecosystem.

[IloveNongthongbamBirenSingh]

This summer, I have planted 23 mango trees. Each of us should plant and nurture a tree to good health. It would do wonders for our planet.

[Jimmy_Johns]

Seeinf so many ignorant comments here just proves that we are doomed. It's not even enraging at this point, just really really sad 😢

People really think their food is produced in the supermarket.

[Timorias]

Seeing bleached coral is something that makes me sad in a way I can’t really explain.

[philipbrailey]

We’ve been hearing this for 20 years. Hello.

[Alex-cwrz]

You always notice the climate change skeptics are always absent from these videos were the evidence is right in front of our eyes and it is so devastating for our natural world and the wonders in it.

[WONG]

People should be more concerned about nature, and reduce the climate change.

[TC-yqog]

For me, this is the number one reason not to have children. Anyone born in the last 10/15 years are going to end up going to war for liveable farm land and drinkable water. They’ll despise us for our inaction and complicity, rightly so.

[laurentb.]

So you have records of temperature taken 400 years ago?

[Louisdegalfilla]

This the price of the wealth of the western world

[cowubl]

Darling BBC, Why you are turning off comments ok UK Riot videos. Please turn ON. We Indians want you😉

[kerrygligorovic]

The world still haven't learn anything from back in 2022 because that was the worst heatwaves 🥵as the temperatures went up has cause a lot of fire, drought and deaths. If the people of the world have just take this climate change very seriously and do something about it then maybe the year wouldn't have gotten worst.

[filmic]

Thank you for showing that Coral Reefs go through a succession 1º 2º... etc... phases as well? much like forest succession after a burn? Is that what is being implied? Thank you..

[kev]

This the same barrier reef you had to admit was growing and in rude health only last year.

[radiationking]

We will learn our lesson only when it's too late.

[stigsrnning]

CO2 have both a corrosive/abrasive and a warm dividing effect. The empirical experiment by placing an ice cube in fresh water of room temperature and an ice cube in plain sparkling water (with only extra CO2, no extra sugar, salt...) with same room temperature show that the ice cube in the latter melts first - or rather the "melting" starts with a lot of energetic CO2 bubbles hitting the ice cube causing eddies breaking and mixing currents near the ice cube, tearing it faster down.
Opposite what we get with the fluids of low (fridge) temperature - then the ice cube in fresh water melts first. CO2-molecules transfer heat among the molecules through water layers of a bit higher temperature - these layers are less dense than the melting cool water, meaning the heat transfer is easier to happen in warm layers. The nature rule of least resistance. After some time there is so much cool water that it suddenly collides with the warm layers, so we get more rapid melting. But that's too late.
But if we introduce a little stirring and do the experiments again, we get same melting time!
So we should avoid having flat sea beds (by trawling) surrounding coral reefs, but have a lot of different high stones (or rough terrain) nearby to get enough eddies there (levelling by better mixing of cool and hot currents) - then less stratified water that cause more damage by sudden warm currents hitting the coral reefs.

[darrenhaines]

It's crazy that the BBC give this story more airtime in the UK than it gets in Australia

[JT_Gamble]

Ya we all know. Tell it to the third world countries, China/many other Asian countries/ Africa countries, and corporations/politicians who send jobs over there because there’s less regulations and they don’t have to pay workers as much and then act like the good guys trying to fight climate change. Oh and yourselves (the media) for not calling them out💁‍♂️.

[diltvjunior]

Human activities have been the main driver of climate change 🤔🤔🤔

[Fishcakebuttie]

Surprise to see comments turned on for the BBC!