&会品 Held-Hou model -Angular momentum Review [M=(acosφ+[u)acosφ At the equator,as the parcels rise from the surface,where the flow is weak,we assume that the zonal flow is zero there. 2 in-o [u=2a 三UM cos o acoSΦ Then,what is the UM at 10,20,30 degree? Answers:14,57,134 m/s,respectively Combined with the weak surface flow,this indicates strong vertical shear of the zonal wind. 授课教师：张洋7M = (⌦a cos ￾ + u)a cos ￾ [u] = ⌦a sin2 ￾ cos ￾ ⌘ UM 授课教师：张洋 7 Held-Hou model -Angular momentum n At the equator, as the parcels rise from the surface, where the flow is weak, we assume that the zonal flow is zero there. ⌦ a cos ￾ a ￾ [ ] [ ] Then, what is the UM at 10, 20, 30 degree? Answers: 14, 57, 134 m/s, respectively Combined with the weak surface flow, this indicates strong vertical shear of the zonal wind. Review