How do you know when climate change is over?
Because it happens.
This is a question that is on the minds of many climate scientists, who have been forced to make difficult decisions over the past two decades as the global temperature has skyrocketed.
But the answer is pretty simple.
For the past 20 years, the planet has been warming.
That’s what happens when we warm the oceans and we cause a chain reaction of processes to occur.
In other words, it is the cycle of life and death that has become so familiar to us that we’ve become numb to it.
“It’s just like we’re watching the sunrise,” says Daniel Grosz, a professor of meteorology at the University of Queensland, Australia, and one of the authors of a new paper published in the journal Nature Climate Change.
“All we can do is sit there and hope that it’s just going to keep going on for a long time.
But that’s not what’s happening.”
Grosberg, who is also a research fellow at the Scripps Institution of Oceanography, Australia and the head of the Australian Meteorological Organisation’s climate monitoring network, says it’s possible to quantify how much warming we are seeing and that it will not be a surprise that the planet is getting warmer.
“The question of when we will see the end of the cycle is a really big one,” he says.
“And we don’t know how much of that is due to natural variability or whether there’s some kind of mechanism at play.”
What is a natural variability?
A natural variability is a change in weather patterns that is caused by changes in the atmosphere and ocean, such as the El Niño Southern Oscillation (ENSO) or La Niña.
It is thought that the climate is becoming more sensitive to natural variations because it is getting hotter.
In particular, the more CO2 we put into the atmosphere, the stronger and longer-lasting the El Niños become.
It’s thought that as CO2 levels rise, the oceans absorb more of the heat from the sun, which means that more CO3 in the air means more warming.
“We’re getting warmer because of more CO4 in the oceans,” Groswers says.
And because of that, more water vapour and clouds are moving across the planet.
It means that when you get the CO2 out of the atmosphere the clouds tend to move away from the surface, creating clouds.
In this way, the cloud cover becomes a proxy for the temperature of the Earth’s surface.
What are the CO 2 cycles?
There are four main processes that make up the natural variability.
The first is the El Nino cycle.
When the Earth warms up, the Earth heats up a little bit, which causes the ocean to expand, which creates more cloud cover.
Then, the CO 3 cycle starts.
The ocean absorbs more of this heat, which then creates more clouds.
The clouds then start to fall down, creating a cycle of more clouds, more cloud growth and so on.
This cycle can last for many years and even centuries.
But it’s not permanent.
As the oceans cool, they expand, and as they expand the clouds decrease and more cloud formation starts to happen.
It all gets reset.
The second cycle is the La Nina cycle.
As CO2 concentrations rise, so does the amount of CO 3 in the ocean.
This makes the oceans hotter, which leads to more cloud.
Then the CO cycle starts again.
This time, the ocean absorbs a bit more of these heat, causing it to cool down a bit, but the CO3 cycles can last a long while.
This happens again and again and then the cycle repeats.
The third cycle is called the La Niñas cycle.
This means the CO emissions from burning fossil fuels and other sources of energy are increasing, which can lead to more clouds in the cloud stack.
This process can last until the Earth is cooling off and so the CO cycles start again.
In some cases, the amount or type of clouds that form can also be tied to the amount and type of CO2 that has been emitted.
“There are so many different types of natural variability that can go on, and we can’t predict all of them,” Gersz says.
So how can we get rid of CO 2 ?
“We need to start changing our behaviour,” Gelsz says, “so we’re looking at a lot of different options, but they all depend on our actions.”
So what’s the answer to our CO 2 dilemma?
Grosy says that if we want to stop the CO II cycle, we need to think about how we can get rid at least some of the CO CO cycle, but not all of it.
The easiest way to do this would be to reduce our use of fossil fuels, but Groszes believes we should also consider how we could reduce our carbon emissions from other sources.
“If we reduce our greenhouse gas emissions, we can stop the cycle,