Since satellite tracking started, the temperature of the world's oceans has risen to a record level, according to The Guardian. According to US government statistics, this has caused maritime heatwaves all around the planet because it increases atmospheric heat content and feeds energy into major weather systems.
According to preliminary data from the National Oceanic and Atmospheric Administration (NOAA), the average temperature of the ocean surface has risen to 21.1°C since the start of April. This is higher than the previous record high of 21°C set in 2016.
A climate expert at the University of New South Wales, Professor Matthew England, told The Guardian that the present trend "looks like it's headed off the charts, smashing previous records." The data, which primarily comes from satellite observations, does not include the waters surrounding the poles.
It occurs at the same time as sea surface temperature anomalies (SST) have been observed by the Copernicus Marine Service of the European Union in the Mediterranean and off the Atlantic coasts of the Iberian Peninsula and North Africa. According to the monitoring agency, they were around +3°C above the typical reference value on April 10, 2023.