Held-Hou model (review) -Summary mperature constrained Review angular momentum and thermal wind balance. 6(0)-6(o)22a2sin4p Smaller than the 2 日o 2gH cos2o RE temp gradient 日e(o,=1=2△HP(sin0) 9. ■ Extent of Hadley Cell: 5gH△H 八1/2 pHY20.4° EQUATOR 8H POLE φH= 322a2 LATITUDE 1.6 Strength of Hadley Cell: (gH3/2△2 1.4 U a223T△V 12 2 Upper jet: in2Φ [u=2a 三UM 1.0 ZONAL WIND】 AT Z=H cos o .8 ■Surface winds. .6 Cu(0)≈ 25g2H3△ 18a323r△v [()-g()八+（品）月 3 1/2 surface easterlies H ZONAL WIND AT Z=0 2Held-Hou model (review) -Summary 授课教师：张洋 2 ! Extent of Hadley Cell: ! Strength of Hadley Cell: ￾H = ✓5 3 gH￾H ⌦2a2 ◆1/2 ⇥˜ (0) ￾ ⇥˜ (￾) ⇥o = ⌦2a2 2gH sin4 ￾ cos2 ￾ v ⇠ (gH) 3/2 ￾5/2 H a2⌦3⌧￾V ! Upper jet: [u] = ⌦a sin2 ￾ cos ￾ ⌘ UM Smaller than the RE temp gradient ! Surface winds: ￾ < ✓3 7 ◆1/2 surface easterlies ￾H Cu(0) ⇡ ￾ 25 18 g2H3￾3 H a3⌦3⌧￾V "✓ ￾ ￾H ◆2 ￾ 10 3 ✓ ￾ ￾H ◆4 + 7 3 ✓ ￾ ￾H ◆6 # ⇥˜ E(￾, z) ⇥o = 1 ￾ 2 3 ￾HP2(sin ￾) ￾H ⇠ 20.4o ! Distribution of temperature constrained by the conservation of angular momentum and thermal wind balance. Review