Product I: Temperature and Salinity Seasonal Fields

We created a summer and winter climatology with a high quality Arctic Ocean by merging Levitus 1998 analyzed fields with AOA analyzed fields. For a detailed explaination of how this was done, read section 2 of the PHC paper: 2. Data Preparation.

Field Depths
For each season, there is a temperature and a salinity field for each of 33 depths.
These depths (in meters) are:

     0    400    1750
    10    500    2000
    20    600    2500
    30    700    3000
    50    800    3500
    75    900    4000
   100   1000    4500
   125   1100    5000
   150   1200    5500
   200   1300
   250   1400
   300   1500

Specifics

• Our data fields are global, and are stored in 1X1 degree bins, exactly analogous to Levitus' model (described in detail on the data download page).
  
• All of our temperature fields are in situ.
  
• Temperature is in units of Celsius, while salinity is parts per 1000

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  A Graphical Analysis of our Seasonal Fields

  There are three types of plots available in the GRAPHICS TABLE below for each of 4 represented depths [0, 100, 500, and 1000m] for temperature and salinity:

  1. Horizontal Slices

  These are four-panel plots illustrating how each PHC field was created using as inputs the Levitus '98 and AOA fields. These panels show:
  

  a) The analyzed Levitus Field
  b) The decimated Levitus Field
  c) The AOA analyzed field
  d) Our optimally interpolated field = b) + d)
  

  Figure 2 from the paper is an example of these types of plots.

  2. Histograms

  These plots illustrate the difference between our PHC product and Levitus' 1998 fields, as shown in Figure 5 of the paper.

  3. Cross Sections

  These are graphs of temperature or salinity vs. latitude at three fixed longitudes. Their purpose is to illustrate the continuity across the data boundaries. These boundaries are described in detail in Figure 3 of the paper.

  
  

  ==================GRAPHICS TABLE======================

  1 = Horizontal Slices
  2 = Histograms
  3 = Cross Sections
  

  	Winter		Summer
  DEPTH	Temperature	Salinity	Temperature	Salinity
  0m	1    2    3	1    2    3	1    2    3	1    2    3
  100m	1    2    3	1    2    3	1    2    3	1    2    3
  500m	1    2    3	1    2    3	1    2    3	1    2    3
  1000m	1    2    3	1    2    3	1    2    3	1    2    3

  
  

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