September 2019 ties for warmest on the planet: NOAA

Rodiano Bonacci
Ottobre 17, 2019

The warmest five Septembers have all fallen within the last five years, and the 10 warmest have all occurred since 2005.

The average global land and ocean surface temperature for September was 1.71 degrees Fahrenheit higher than the average for the 20th century, according to the findings NOAA released Wednesday.

Last month tied for the warmest September since temperatures began being recorded in 1880, according to the National Oceanic and Atmospheric Administration.

The only other September that was just as hot was in 2015, according to NOAA.

The numbers are in across the United States for September temperatures and it was another hot one for much of the country.

Individually, each month in the period January to September 2019 was in the five warmest for the respective month, with July 2019 claiming the "honor" of the hottest individual month ever recorded.

-The Arctic sea ice coverage (extent) for September was the third lowest on record.

The September temperature across global land and ocean surfaces was 1.71°F above the 20th century average of 59.0°F (tied with 2015). We'll have to wait until early next year to get the full picture, but it seems that 2016 will continue to hold onto its crown as the hottest year on record, with 2019 slotting into second place.

-The U.S. had its second warmest September on record, but combining the data with the rest of the continent indicates that North America had its warmest September on record.

NASA's independent calculations concluded that September 2019 was the globally second warmest September on record, trailing September 2016. Sea ice extent bottomed out at 811,000 square miles below the 1981 to 2010 average minimum extent, meaning a chunk of ice roughly the size of Alaska and Colorado was missing from the top of the world due to unusually high air and sea temperatures. The most likely range is between the second and fourth warmest year on record, the agency stated in its monthly climate report.

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