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<p>navigation, fisheries management, and offshore operations.  Observations made about the data are used to study the oceans tides, circulation, and the amount of heat the ocean contains. These observations can help predict short and long term effects of the weather and the earth's climate over time.</p>

<p><big>Measurement</big></p>
<p>The sea surface height (SSH) is calculated through altimetry satellites using as a reference surface the <a href="page.php?w=Earth_ellipsoid">ellipsoid</a>, which determine the distance from the satellite to a target surface</p><p>
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