2021 was a dramatic year for the climate, not just for the temperature record registered in the Arctic Circle. A study just published in the scientific journal Advances in Atmospheric Sciences reported that in the year that ended the ocean temperatures around the world have risen at a rapid pace, reaching livelli record never registered. The data confirm an increase in the degree of heat for the sixth year consecutive. Situation noin the North Pacific Ocean, in the North Atlantic Ocean and in the Mediterranean Sea.
Like seven atomic bombs
The comparison that the scientists in the study just published it is emblematic: the increase in heat recorded in the oceans in the most superficial part (it is 2000 meters) is 14 Zettajoule compared to the previous year. A value that to the layman says little but that can be explained with a concrete example very significant. It is as if in our seas – the researchers explain – they have been dropped 7 atomic bombs (of the power of that of Hiroshima) per second. Only in 2019 this value reached that of 5 atomic bombs.
What happens when ocean water absorbs heat
“The oceans – according to Michael Mann, a climate scientist at Pennsylvania State University – are absorbing most of the heating from the carbon emissions of human beings. Until we reach zero emissions net, the warming – Mann specifies – will continue to grow and we will continue to battere i record of ocean heat, as we did this year.
When a Ocean absorbs heat – the researchers note in the study just published – molecules of the water that compose it expand, leading to a rise in the level of big. With dramatic consequences: “The raising of ocean temperatures – explains the atmospheric scientist Lijing Cheng of the Chinese Academy of Sciences – and the consequent increase in the mass of water they create storms and hurricanes more powerful, as well as increasing rainfall and the risk of flooding “.