Several large-scale climate patterns influenced climate conditions and weather patterns across the globe during 2010. The transition from a warm El Niño phase at the beginning of the year to a cool La Niña phase by July contributed to many notable events, ranging from record wetness across much of Australia to historically low Eastern Pacific basin and near-record high North Atlantic basin hurricane activity. The remaining five main hurricane basins experienced below- to well-below-normal tropical cyclone activity. The negative phase of the Arctic Oscillation was a major driver of Northern Hemisphere temperature patterns during 2009/10 winter and again in late 2010. It contributed to record snowfall and unusually low temperatures over much of northern Eurasia and parts of the United States, while bringing above-normal temperatures to the high northern latitudes. The February Arctic Oscillation Index value was the most negative since records began in 1950.
Earth Systems Research Center
Bulletin of the American Meteorological Society
American Meteorological Society (AMS)
Digital Object Identifier (DOI)
Shiklomanov A.I. and Lammers R.B. (2011) River Discharge, in Chapter 5, Arctic, State of the Climate in 2010, Bull. Amer. Meteor. Soc., 92 (6), S153-S154.