How did October 2017 rank in terms of global temperature
NASA's Goddard Institute for Space Studies (GISS) just released their global temperature anomaly data for October 2017.
October 2017 temperature anomalies (degrees Celsius) Image courtesy NASA GISS.
<img src="https://vortex.accuweather.com/adc2004/pub/includes/columns/climatewx/2017/590x380_11170104_amapsnew.png"/>
In terms of global land/ocean combined surface temperature anomalies, October 2017 averaged 0.90 of a degree Celcius above the 1951-1980 mean, which makes last month the second warmest October on record going back to 1880.
The warmest October on record still belongs to 2015 with a temperature anomaly of +1.08 degrees Celsius. The third warmest October on record occurred in 2016 (+0.89 of a degree Celsius).
October 2017 ranked as the third warmest October on record for the Northern Hemisphere (+1.02 degrees Celsius).
October 2017 ranked as the second warmest October on record for the Southern Hemisphere (+0.78 of a degree Celsius).
Global temperature anomalies by decade. Undeniable warming trend!
<img src="https://vortex.accuweather.com/adc2004/pub/includes/columns/climatewx/2017/590x286_11170106_screen-shot-2017-11-16-at-7.33.37-pm.png"/>
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Based on the current 2017 temperature departure data through October, it looks like 2017 will end up as the second warmest year on record globally coming behind 2016 and just ahead of 2015.
If 2017 ends up as the second warmest year on record, it will be quite remarkable considering most of the year had neutral ENSO conditions before trending toward the cooler La Nina.
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