State of the climate – a 2013 snapshot

NASA measurements
2013 Temperature Anomaly

In January, NASA and NOAA (the US National Oceanic and Atmospheric Administration) released a joint statement on the temperature and climate patterns seen in 2013. Their short presentation (PDF) gives a summary of last year’s data in relation to long-term trends and averages. Of particular note for Arctic scientists is the relatively cool high-latitude temperatures in mid-summer. These lead to less summer sea-ice melting compared to the previous year’s record-breaking┬áminimum, causing nonsensical headlines from the usual suspects that the world was cooling down. As slides 2,3 and 8 show, 2013 was one of the warmest years on record, while slide 11 shows that Arctic sea ice was still far below average last year.

Polar ice cover graphs
Polar ice cover through time