In some parts of the Atlantic Ocean, sea surface temperatures over the past few weeks have reached unprecedented highs, reaching record highs.
From the northwest coast of Africa to the Atlantic Ocean to the west, this atypical warming is taking place in a large belt. As satellite data reveals, some surface waters in the area are around 4 degrees Celsius higher than normal at this time of year. This was said by a meteorologist from the University of Miami in Coral Gables, Florida, Brian McNoldy.
Experts said the record heat has been recorded since March, now even hotter.
The average sea surface temperature from the Atlantic region extending 60 degrees north of the equator to southern Greenland, southern Norway, and central Canada’s Hudson Bay is nearly 73 degrees Fahrenheit (22.7). degrees Celsius) on June 10. This temperature is about 1 degree Celsius higher than the average annual temperature. the average temperature recorded from 1991 to 2020. In 2010, the previous record on the same day, June 10, was 22.1 degrees Celsius.
Although the specific reason for warming is not clear, the following factors may contribute.
Reduce air pollution
There is a chance that less pollution could lead to higher temperatures. With less pollution, more radiation can reach the sea surface.
Sahara Desert dust
A significant portion of the desert dust from the Sahara flies over the sea.
These dust layers are carried by winds generated by a semi-permanent high-pressure system and are known as “Azore High”, due to its proximity to the islands.
Recently, however, the Azores has become less influential and has shifted southwestward away from Africa. As a result, the winds that normally draw and transport dust from the Sahara desert westward across the North Atlantic are actually weaker and virtually dust-free, according to a University of Pennsylvania climatologist.
Thus, solar radiation is often diffused back into space through dust to the surface of the oceans, thereby heating the dark waters.
In case of stronger trade winds, excess dust from Africa could cool the area somewhere.
Global warming trend
The return of El Nino this year could be the cause of warmer seas.
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Categories: Trends
Source: tiengtrunghaato.edu.vn