est100 一些攝影(some photos): negative Arctic Oscillation, 負北極振盪

為什麼這次寒流這麼強？原來是發生負北極振盪 | yam蕃薯藤新聞
http://n.yam.com/nownews/life/20160123/20160123523571.html

State of the Climate December 2010 which uses the phrase "negative Arctic Oscillation" four times, is very representative of this increasing tendency

est100 一些攝影(some photos)