The observing system figure is made up of 3 panels. Please do not change the size of the panels. The 3 panels follow.

Panel a: rainfall measurements

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Panel b: surface temperature measurements
Panel b is constructed from the following two figures by reading them both into Photoshop and overlaying the plot with dots onto the plot with shading.

The following map is land temperature observations. Make a transparency of this figure and put it on top of the shaded ocean map that follows, and that is what the eventual figure will look like.

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The following map indicates ocean regions where ships go throughout the calendar year.

Panel c: vertical structure measurements.

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