New consecutive record temperatures
March was the warmest on record since the temperature readings from pre-industrial times. This is the eleventh consecutive month in which the record is beaten.
A worrying observation
Compared to the average of the 20th century, March experienced a temperature rise of more than 1.22 ° C. As in February, there was a mercury exceeding by more than 1.04 ° C of the 20th century average. The prior record set in March was in 2015 with an average temperature of 0.90 ° C. Since 1997, 16 of the 18 years that followed were warmer according to NOAA (US National Oceanic and Atmospheric Agency)
The climate summit of December 2015 confirmed a difference of 2 ° C as the safe limit for global warming, but a target of + 1.5 ° c was privileged to continue the efforts, which now seems to be widely optimist.
The major El Niño
However, these records could be contrasted with the large El Niño phenomenon taking place this year. It is characterized by abnormalities of the ocean-atmosphere system in the Pacific that occurs every 3-7 years. Normally, trade winds push the warm waters from the coast of Ecuador and Peru to Indonesia where they accumulate. Some years, the heat builds up in the west and leads to a reversal of the trade winds and warmer waters in the eastern basin. This could also be the cause of major forest fires that ravage Alberta, Canada, where drought and lack of precipitation persist for several years. Canada and Asia have known the effect of temperatures at least 3 ° C above the last thirty years. The surveys also indicated that the temperature at the ocean surface was for the month of March the warmest since the start of pre-industrial surveys. The late end of El Niño should push the mercury down by the end of the year.
The scientists also announced that the winter peak of the Arctic ice cap was the smallest ever recorded in that year, according to initial surveys dating back to 1979.