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Table 1 Some of the atmospheric and solar parameters during the years 2005 to 2013

From: Vertical coupling of atmospheres: dependence on strength of sudden stratospheric warming and solar activity

  Year
  2005 2006 2007 2008 2009 2010 2011 2012 2013
TSSW 40 60 40 60 60 40 35 30 45
T peak_SSW 240 260 245 268 265 237 235 245 248
U east +10 −25 −8 −15 −35 −6 +25 +5 −12
SSW str. Minor Major Major Major Major Major Minor Minor Major
<SSN> 30 10 14 3 1 16 24 46 51
  1. TSSW, stratospheric temperature anomaly at 90° N; Tpeak_SSW, peak stratospheric temperature during SSW at 90° N; Ueast, peak eastward zonal mean stratospheric wind at 60° N during SSW; SSW str., SSW strength; <SSN>, average SSN.