Tropical Highlights

  Table of Atmospheric Indices  (Table 1)

  Table of Oceanic Indices  (Table 2)

  Time Series

  Time-Longitude Sections

  Mean & Anomaly Fields

• Depth of the 20C Isotherm  T16
  
• Subsurface Eq. Pacific Temp  T17
  
• Sea Surface Temperature  T18
  
• Sea Level Pressure  T19
  
• 850-hPa Vector Wind  T20
  
• 200-hPa Vector Wind  T21
  
• 200-hPa Streamfunction  T22
  
• 200-hPa Divergence  T23
  
• 200-hPa VPOT & Div Wind  T24
  
• OLR  T25
  
• SSM/I Tropical Precipitation  T26
  
• Cloud Liquid Water  T27
  
• Precipitable Water  T28
  
• E-W Divergent Circulation  T29
  
• W-E Divergent Circulation  T30
  
• Pacific Zonal Wind (a)  T31
  
• Pacific Zonal Wind (b)  T32
  

  Appendix 1: Outside Contributions

AUGUST 2021

FIGURE T31.  Pressure-latitude section of the mean (top) and anomalous (bottom) zonal wind (m s^-1) and divergent circulation averaged over the west Pacific sector (120E-170E). The divergent circulation is represented by vectors of combined pressure vertical velocity and the divergent component of the meridional wind. Red shading and solid contours denote a westerly (top) or anomalous westerly (bottom) zonal wind. Blue shading and dashed contours denote an easterly (top) or anomalous easterly (bottom) zonal wind. Anomalies are departures from the 1981-2010 base period monthly means.