March set another climate record

Climate data from NASA shows March 2017 to be the warmest on record.

March 2017 was the second warmest March in 137 years of modern record-keeping, according to a monthly analysis of global temperatures by scientists at NASA’s Goddard Institute for Space Studies (GISS) in New York.

Last month was 1.12 degrees Celsius warmer than the mean March temperature from 1951-1980. The two top March temperature anomalies have occurred during the past two years.

March 2016 was the hottest on record, at 1.27 degrees Celsius warmer than the March mean temperature. March 2017’s temperature was 0.15 degrees Celsius cooler than March 2016, but 0.2 degrees Celsius warmer than any previous March.

Global map of the GISTEMP land-ocean temperature index anomaly for March 2017, relative to the 1951-1980 average
Global map of the March 2017 LOTI (land-ocean temperature index) anomaly shows that Europe and all of Russia (especially north central Siberia) were again much warmer than the 1951-1980 base period. Much of the United States was also relatively warm, but Alaska was instead cool. — View larger image

The monthly analysis by the GISS team is assembled from publicly available data acquired by about 6,300 meteorological stations around the world, ship- and buoy-based instruments measuring sea-surface temperature, and Antarctic research stations.

The modern global temperature record begins around 1880 because previous observations didn’t cover enough of the planet. Monthly analyses are sometimes updated when additional data becomes available, and the results are subject to change.

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