350 Observa 300 K (m2 s-2) 250 YEAR DJF 200 Kinetic energy: 150 100 A=A]+4*+A 50 K=KM+KSE十KTE 150 KM=52+) 100 50 a2+9 0 25 K=2+0网 0 200- d Strong seasonal variation 150 100 50 I--E 80S 60 40 20 20 40 60 80N
Observations - Eddy fields 12 \ 授课教师：张洋 n Kinetic energy: http://www.adultpdf.com Created by Image To PDF trial version, to remove this mark, please register this software. KM = 1 2 ([¯u] 2 + [¯v] 2) KSE = 1 2 [¯u⇤2 + ¯v⇤2] KTE = 1 2 [u 02 + v 02] A = [A¯] + A¯⇤ + A0 K = KM + KSE + KT E Strong seasonal variation
Observati 20 [vo](m2;2 10 Momentum flux: -10 The total momentum flux is strongest 20 around 30-40 degree [] b 10 north and south. which is mainly due to 0 the contribution of transient eddies. -10 -20 10 In N.H.,the contributions [v*ū*] from the zonal mean flow and the stationary eddies are comparable,but -10 10 centered in the tropic and [].[] d subtropic,respectively. 0 -10 805 60 40 20 0 20 40 60 80N
Observations - Eddy fields 13 \ 授课教师：张洋 n Momentum flux: http://www.adultpdf.com Created by Image To PDF trial version, to remove this mark, please register this software. The total momentum flux is strongest around 30-40 degree north and south, which is mainly due to the contribution of transient eddies. In N.H., the contributions from the zonal mean flow and the stationary eddies are comparable, but centered in the tropic and subtropic, respectively
Observatinn 1-10 三丰二 ANNUAL (m2s-2 40 4030 -30 20 20 10 ■Momentum flux: 10 The eddy components 4Jet J6t30 are centered at upper 25 20 Jet core core -20 0 level,near tropopause. b core -10 10 The relation with jets 10 The zonal-mean components 2[ are centered near Jet core tropopause and surface. 246Z 2④ 2 上0 80S70°60°50°40°30°20°10°0°10°20°30°40°50°60°70080N
Observations - Eddy fields 14 \ 授课教师：张洋 n Momentum flux: http://www.adultpdf.com Created by Image To PDF trial version, to remove this mark, please register this software. The eddy components are centered at upper level, near tropopause. The zonal-mean components are centered near tropopause and surface. Jet core Jet core Jet Jet core core Jet Jet core core The relation with jets