Tag Archives: 2011

2011’s “Double-dip” La Niña

NOAA’s National Climatic Data Center and the American Meteorological Society recently released the 2011 State of the Climate Report, showcasing some of the major weather and climate highlights of the year and discussing the “hows” and “whys” of 2011’s climate story.

One of the primary influences on the 2011 climate story was La Niña – the cool phase of the El Niño-Southern Oscillation (ENSO). In fact, the central and eastern tropical Pacific was cooler than normal both at the beginning of the year and the end of the year, hence why it’s being referred to as the “double-dip La Niña.” Continue reading

Category: Climate
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Winter? Winter? Winter? Anyone seen Winter?

As we begin February, the northern hemisphere winter has been unseasonably warm and not snowy for much of the United States and parts of Western Europe. Chicago, for example, had its warmest January in about eighty years. While Punxsatawney Phil saw his shadow on Groundhog Day (2 February), indicating six more weeks of winter, NOAA’s Climate Prediction Center (CPC) suggests continued above normal temperatures for much of the U.S. over the next three months. For this EarthNow entry, we’re taking a look at snow and ice cover for January 2012 and how that compares with January 2012. Further, we’ll investigate how the North Atlantic Oscillation (NAO) may have a role in the not so winter-like conditions. Continue reading

Category: Earth Systems
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2011 – A Year of Extremes

For this EarthNow entry, we thought it would be nice to do a global Look Back at 2011, with regards to major weather and earth science events, as well as some important climate measurements. Continue reading

Category: Annual Review
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