Peking According to a recent analysis, the world's oceans were warmer than ever since global recording began last year. The warming of the oceans due to climate change is also accelerating, warns a team of 14 scientists from 11 institutes from different countries. The past ten years have brought the highest temperatures in the sea since the 1950s, with the most recent five years being the warmest, according to the study presented in the specialist magazine "Advances in Atmospheric Sciences".
The scientists combined their warning with a call to action to stop climate change. The consequences are catastrophic. Rising sea temperatures led to extreme weather conditions such as hurricanes and heavy rainfall. They are also one of the main reasons for the devastating forest fires such as in Australia, California and the Amazon region. Oxygen deprivation and damage to fish and other living beings threatened in the oceans. Thermal expansion causes the sea level to rise.
The sea temperature to a depth of two kilometers last year was about 0.075 degrees above the average from 1981 to 2010, according to the paper, led by Cheng Lijing from the Institute of Atmospheric Physics (IAP) at China's Academy of Sciences (CAS ) was written. The enormous amount of energy in the form of heat that man has put into the oceans via climate change in the past 25 years corresponds to 3.6 billion atomic bomb explosions of the same magnitude as in Hiroshima, Japan.
The researchers used relatively new methods from the institute to summarize the data for warming to a depth of 2000 meters. "It is important to understand how quickly things are changing," said John Abraham, co-author and professor at the University of St. Thomas in the United States. "If you want to understand global warming, you have to measure ocean warming." Since 1970, more than 90 percent of global warming has flowed into the oceans, while only four percent has heated the land area and the atmosphere.
"Global warming is real and it is getting worse," said Abraham. "And that's just the tip of the iceberg of what's to come." But humanity could do something: "We can use our energy more wisely and we can diversify our energy sources," said the researcher. “We have the power to reduce this problem.” According to the researchers, the oceans will take a long time to react to changes.
"It is important to note that ocean warming is advancing even if the global surface air temperature can be stabilized at or below two degrees," the article said, referring to the goals of the Paris Agreement. The oceans reacted much more slowly. "But the pace and extent of ocean warming and the associated risks at least decrease with fewer greenhouse gas emissions."
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