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

MARCH 2018

FIGURE T22.  Mean (top) and anomalous (bottom) 200-hPa streamfunction (CDAS/Reanalysis). Contour interval is 20 x 10⁶ m²s^-1 (top) and 5 x 10⁶ m²s^-1 (bottom). Negative (positive) values are indicated by dashed (solid) lines. The non-divergent component of the flow is directed along the contours with speed proportional to the gradient. Thus, high (low) stream function corresponds to high (low) geopotential height in the Northern Hemisphere and to low (high) geopotential height in the Southern Hemisphere. Anomalies are departures from the 1981-2010 base period monthly means.