According to a monthly analysis of global temperatures by NASA scientists, last month was the third warmest January in 137 years of modern record-keeping. Last month's temperature was 0.20 degrees Celsius cooler than the warmest January in 2016. However, it was 0.92 degrees Celsius warmer than the mean January temperature from 1951-1980.<br/><br/>Scientists at NASA's Goddard Institute for Space Studies (GISS) in the US created a map of the January 2017 land-ocean temperature index (LOTI) anomaly. It shows that most of North America and Siberia were much warmer than the 1951-1980 base period. Much of the rest of Asia was also relatively warm.