Supplemental material to

DATA (SST fields, 1856-1991)

The results of the analysis described in the paper are here .
To view it as an Ingrid movie, click here .

SST indices

Indices (averages for different areas) of Sea Surface Temperature (SST) anomalies from this paper (Fig. 17) and also from Mark A. Cane, Amy C. Clement, Alexey Kaplan, Yochanan Kushnir, Ragu Murtugudde, Dmitriy Pozdnyakov, Richard Seager, Stephen E. Zebiak, 1997. 20th Century Sea Surface Temperature Trends. Science, 275, 957-960. (Fig. 5) are available here

Related things which are not in the paper

• The index for the tropics-midlatitude gradient estimated for the Northern Hemisphere by the suggestion of George Kukla as [0.4*NA+0.6*NP]-GT is here.
  NA, NP, GT are indices from the paper shown there on Figure 17, so that they are the SST averages for the following areas
  NA (30N--50N, 60W--0W) -- North Atlantic,
  NP (30N--50N, 150E--120W) -- North Pacific,
  GT (5S--5N) -- Global Tropics.
  Coefficients 0.4 and 0.6 weight NA and NP proportionally to the areas involved.
  On the figure: thin line and huge dots (closed circles) show the annual means from the OS and GOSTA respectively, while the thick line and open circles show the 5 years running means for the same.
  Warning: this figure was produced through MATLAB in a quick-and-dirty way, so it gives a (false) impression that there were no obsevations at all in the early part of the record: MATLAB puts NaN into an annual mean if even one of the monthly values for a given year is missing. This can be easily fixed if there is enough of public interest.
  
  
• Supplement to Figure 14:
  • My answers to Kevin Trenberth's questions on Figure 14 are here
  • Graphics for the answers to Kevin Trenberth is here.
    
    
• My comments on "An Improved Method for Analyzing Sparse and Irregularly Distributed SST Data on a Regular Grid: The Tropical Pacific Ocean" by Tom Smith, Robert Livezey, and Samuel Shen, J. Climate, submitted.
  Text of comments
  Figures
  • Fig R1
  • Fig R2
  • Fig R3
  • Fig R4
    
    
• Lag-1 correlation patterns for various SST anomaly analyses.
  All products are averaged on a common 5x5 grid.
  
  • 1856-1991
  • 1903-1991
  • Nov 1981 - Dec 1991
    
    
• Skewness of NCEP OI and our OS for different periods of time are here.
  
  
• Skewness of GISST2.2 for different periods of time are here.