Procedures:

• The entry website provides access to the Levitus 1994 ocean atlas
• Under the second heading "Datasets and variables" it is possible to select:
• ANNUAL , MONTHLY or SEASONAL
• For Q. 1-12 and Q. 17-19 select ANNUAL
• then salinity under the heading "Datasets and variables"
• then click on the color image under LEVITUS94 ANNUAL sal options 
• this color image is to the right of the IRI header
• The image presented is ANNUAL salinity as a global color map

• The map can be modified according to user-defined options:
• 1. The depth can be set in the box above the map
• 2. The upper limit for the vertical axis is set in the upper box left of the map
• 3. The lower limit for the vertical axis is set in the lower box left of the map
• 4. The left margin for the horizontal axis is set in the box to the lower left of the map
• 5. The right margin for the horizontal axis is set in the box to the lower right of the map
• 6. The lower limit for the color scale is set to the lower left of the map
• 7. The upper limit for the color scale is set to the lower right of the map
• 8. The first pull-down menu sets the horizonal axis (latitude, longitude, depth)
• 9. A second pull-down menu sets the vertical axis (latitude, longitude, depth)
• 10. For the pull-down menu for map features select draw coasts
• 11. For the pull-down menu for map colors select colors / contours
• Once the necessary parameters have been entered, the map can be redrawn using the button to its left, above the help icon.
• For Q. 11-12 The axes need to be reset:
• The horizontal axis should be set to latitude (pull-down #8)
• The vertical axis should be set to depth (pull-down #9)
• The uppermost box (#1) then become longitude on redrawing
• Both the depth scale (#2, #3) and latitude range (#4, #5) need to be reset.
• The procedures are similar for the other questions except that different data sets are chosen
• For Q. 20 select SEASONAL

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Department of Geological Sciences, 
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Phone: (812) 855-5582  Last updated: 13 October 2002
Comments: simon@indiana.edu
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