Monday, February 17, 2014
The Polar Jet streams further North
Let us take 2 known climate records from history, the very cold winter of 1981-82, cold either in Europe or North America, and the very strange winter of 2013-14, cold in some places and warm in some others. On NOAA climate composite chart on top we can see jet stream largely Southwards compared to January 2014 being largely more jagged and more to the North.
Reason for 2014 extreme North Pacific location may have something to do with North Pacific temperature anomaly and extremely much warmer Arctic Ocean air temperatures. On a whole the Polar Jet Stream must and did move Northwards as it is overall warmer in 2014 compared to January 1982. This 2014 pattern gave the strange weather like California drought, weird cold winter storms in SE US, massive storms from one strong Cyclone after another hitting and flooding the British Isles and Ireland, a warmer Olympics even if it is in Sochi. Finally a much warmer Arctic warmed by the same Cyclones hitting the Isles, and also from Cyclones coming from the North Pacific. Warmer over all weather means the Jet streams moved North and meandered more steeply, causing unusual patterns creating havoc instead of more predictable weather. WD February 17 2014...
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