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2017 was the 2nd hottest year since 1880. The top-5 hottest years have all occurred since 2010 [OC] by Geographist in dataisbeautiful

[–]Geographist[S] 5 points6 points  (0 children)

This is the average for the entire planet. From NASA Earth Observatory's article:

“Despite colder than average weather in any one part of the world,” said GISS Director Gavin Schmidt, “temperatures over the planet as a whole continue the rapid warming trend we have seen over the last 40 years.”

2017 was the 2nd hottest year since 1880. The top-5 hottest years have all occurred since 2010 [OC] by Geographist in dataisbeautiful

[–]Geographist[S] 4 points5 points  (0 children)

See the FAQ in my top comment. Land and oceans warm differently, and land area is not equal between the hemispheres.

2017 was the 2nd hottest year since 1880. The top-5 hottest years have all occurred since 2010 [OC] by Geographist in dataisbeautiful

[–]Geographist[S] 8 points9 points  (0 children)

Data: GISS Surface Temperature Analysis

Tools: Python, imagemagick

More info: https://www.nasa.gov/press-release/long-term-warming-trend-continued-in-2017-nasa-noaa

To answer some common questions off the bat:

  • This is global data. Even though the southern hemisphere is experiencing winter during July and August, those months are roughly 3.6ºC (6.5ºF) warmer than December and January across the globe.

  • The data go back 137 years because that is as far as continuous records, measured in the same exact way, allow. Other data measured in different ways (ie, not to the very month) can go back even further.

  • There's no typo. The data show seasonal anomalies for every month from 1880 onward. The anomaly represents the differences from a 1980-2015 baseline.

  • Isn't this just a normal cycle? No.