TORONTO – Arctic ice levels have reached record levels, according to a new report on the world’s oceans and the impact of climate change.
Between 1979 and 2020, the average amount of sea ice in the Arctic, the area of the ocean that has at least some ice, has decreased from a surface area roughly the size of Greenland.
Conclusion can be found in the fifth edition of the Copernicus Ocean State Report, published last week in the Journal of Operational Oceanography. This year’s report is based on an analysis of more than 120 scientific experts from more than 30 European institutions. The annual publication presents a comprehensive summary on the current state of Earth’s oceans.
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“Climate change, pollution and over-exploitation have put unprecedented pressure on the ocean, necessitating an urgent need for sustainable measures to govern, adapt and manage to secure the various life support roles provided by the ocean for human well-being. is,” said Schukman, who chaired the Karina Vaughan Report. News release.
“Scientifically sound knowledge derived from high-quality ocean products and delivered by ocean services is critical to encouraging transformational change. Recognizing the ocean as a fundamental factor in the Earth system and embracing the multidimensional and interconnected nature of the ocean To lay the groundwork for a sustainable future.”
The report touches on several important changes and trends in the world’s oceans.
For example, from January 1993 to May 2020, sea level rose at an average rate of 3.1 millimeters per year. The highest increase occurred in the Baltic Sea, at 4.5 millimeters per year.
During the same period, ocean temperatures increased by an average of 0.015 °C per year. At the top of the list was the Black Sea, the temperature of which increased by 0.071 °C per year.
The warming of the Arctic Ocean itself is estimated to contribute about four percent of the global ocean warming.
Talking about the Arctic, the Barents Sea in the northwest of Russia has seen a decrease of about 90 percent in average sea ice thickness, according to the report.
Extreme variation between cold weather and marine heatwaves in the North Sea, nestled between the UK, Norway, Denmark, Germany and the Netherlands, as well as parts of Belgium and France, has been linked to reported changes in the catches of the sole, European fish. Lobster, sea bass, red mullet and edible crab.
The report also noted four consecutive record flood events in Venice, Italy in November 2019, as well as above-average wave heights in the southern Mediterranean.