RIAU24.COM – Potsdam Institute researchers have discovered a rather surprising loss of stability of warm water currents during the previous century which they call the ‘Atlantic Meridional Overturning Circulation or AMOC.
Flows have been seen at their slowest point in nearly 1,600 years and recent analysis reveals that they could come to a complete stop. This can seriously disrupt the function of rain, especially in areas such as India, South America and West Africa.
It will also increase the frequency of storms while lowering temperatures in European countries while also causing sea levels in eastern North America to rise rapidly.
Climate scientists have seen the warning signs of the collapse of the Gulf Stream, also known as the critical tipping point of our world.
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First reported by The Guardian, Potsdam Institute researchers have discovered a rather surprising loss of stability in warm water currents over the previous century which they call the ‘Atlantic Meridional Overturning Circulation or AMOC. The current has been seen at its slowest point in nearly 1,600 years and recent analysis reveals that it could come to a complete stop.
If you’re wondering if that’s a big deal — it is. This can seriously impair the function of rain, especially in areas such as India, South America and West Africa.
It will also increase the frequency of storms while lowering temperatures in European countries while also causing sea levels in eastern North America to rise rapidly. It’s also going to affect the Amazon rainforest and the Antarctic ice sheet — basically, we’re screwed.
What’s worse is that the AMOC system is quite complex and with our world’s temperature rising, it’s almost impossible to know when we’ll land in trouble. It could be a decade away or as far as a century away, but it’s inevitable. And scientists warn that this should not happen in any way.
Niklas Boers, from the Potsdam Institute for Climate Impact Research in Germany, explains, “The signs of destabilization already visible were something I didn’t expect and I found scary. It’s something you can’t [biarkan] occur.”
He cautioned by stating that you know what kind of CO2 level will trigger the collapse of the AMOC, “So the only thing to do is keep emissions as low as possible. The likelihood of this very high impact event occurring increases with every gram of CO2 we put into the atmosphere.”
Analysis of ice cores and other data from the last 100,000 years reveals that AMOC has two states: a fast one that is also stronger, and a slow one that is not as strong.
The data reveal that rising temperatures can cause the AMOC to switch abruptly between these states over a period of one to five decades.
AMOC is intensified by dense, salty seawater entering the Arctic ocean. However, the melting of fresh water from the Greenland ice sheet slowed the process much earlier than climate models suggest.
Giving an example of passing a chair, the researcher explained that pushing the chair changed its position but did not make it unstable.
Tilting the chair, however, affects its stability and position. After observing eight independently measured temperature and salinity data sets over 150 years, it was revealed that global warming is increasing rapidly and not just changing flow patterns.
He concluded, stating, “Decrease [AMOC dalam beberapa dekade terakhir] this may be related to an almost complete loss of stability over the last century, and AMOC could be approaching a critical transition to a weak circulation mode. ”
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