November 2010 was the globe’s second warmest November on record, according to the National Oceanic and Atmospheric Administration (NOAA) National Climatic Data Center (NCDC). NASA’s Goddard Institute for Space Studies rated November 2010 the warmest November on record.
Both NOAA and NASA rated the year-to-date period, January – November, as the warmest such period on record. Global satellite-measured temperatures for the lowest 8 km of the atmosphere for November were the 5th or 3rd warmest on record, according to Remote Sensing Systems and the University of Alabama Huntsville (UAH), respectively. UAH rates the year-to-date period, January-November, as the 2nd warmest such period in the satellite data record, behind 1998.
The record or near-record November global warmth is remarkable, given that we are in the midst of a moderate strength La Niña episode in the Eastern Pacific. The large amount of cold water that upwells to the surface during a La Niña typically causes a substantial cool-down in global temperatures, making a monthly temperature record difficult to set.