Saturday , June 19 2021

The ocean absorbs more than 60% of the world's heat – BBC News BBC



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Recent studies suggest that. The ocean absorbs the warmth of the world before it was supposed.

A team of scientists from Princeton University and the American Institute of Scientific Research A recent study in Nature, which points out that the world's oceans absorb surplus heat from the greenhouse effect, is more than expected by 60%, and efforts to halt global warming are even more difficult.

Over the last 25 years, between 1991 and 2016, the team has found that the ocean has absorbed more than thirteen times the amount of surplus energy in the world, or Zettajoules. The value is 13, followed by 21 zeros.

Heat causes the ocean to grow on average by 6.5 degrees Celsius in ten years. This is higher than the estimates of the United Nations Intergovernmental Panel on Climate Change (IPCC). It is expected that the forecast will average by 4.5 degrees Celsius in ten years.

The warm energy of the ocean absorbs from the surface and the Earth's atmosphere every year makes 150 times more energy than it consumes all over the world at the same time. This is 60% higher than the previous estimate.

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Researchers suggest that sea levels may increase faster than previously assumed.

Previously, scientists know only that. The ocean absorbs excess heat from global warming by about 90%, but does not realize the trend in annual heating costs. It is difficult to predict how to properly plan climate change.

Dr. Lorraine Plantey, head of research at Princeton University, said: This finding is disturbing that the international community will not be able to meet the IPCC's goal of limiting global temperatures to more than 1.5 degrees Celsius.

"Stop global warming" Reduce global temperatures to more than 1.5 degrees Celsius from pre-industrial levels. This is considered very difficult. But our findings emphasize this plan has many difficulties. With regard to warmth in the ocean, the world is less supportive of greenhouse gas emissions, "said Dr. Planen.

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Increased heat causes a decrease in oxygen levels in the sea. Impact on many marine organisms.

In addition, the warming of oceans releases more oxygen and carbon dioxide. Underwater ecosystems are affected by lower levels of oxygen. Heat expansion (thermal expansion) also increased sea levels faster.

The team used a more accurate steel temperature measurement methodology in their latest study. Along with nearly 4,000 Argo boats and temperature buoys that have been installed around the world. It also measures the amount of oxygen and carbon dioxide in the air. The ocean flies as the temperature rises. This method communicates old information for many years. And counted to know the heat increase in the sea.

Dr. Parkinson also warned. The huge heat the ocean absorbs. It can be restored in the next few hundred years. According to the changing ocean stream cycle, which controls the absorption and degradation of the ocean. That means stopping global warming in the next few centuries. There are unpleasant situations where you can wait.


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