India, Feb. 14 -- Since 2007, 11 marine heatwaves have occurred in the Arctic Ocean

A worrying trend has emerged in the Arctic Ocean, with marine heatwaves occurring for six consecutive years from 2015 through 2021, according to a new study published in the journal Nature Communications .

A marine heatwave occurs when surface water temperatures are higher than 95 per cent of the values from the past 30 years for at least five consecutive days.

Since 2007, 11 marine heatwaves have occurred in the Arctic Ocean, with the average temperature rising 2.2 degrees Celsius above the seasonal average, the study noted.

"The summer of 2007 marked the beginning of a shift towards a new era of marine heatwaves over the shallow marginal seas of the ...