NDBC TAO: Zonal - depth gridding<title> <meta http-equiv="Content-Type" content="Text/html; charset=iso-8859-1" /> <meta name="DC.title" content="NDBC TAO: Zonal - depth gridding" /> <meta name="DC.description" content="The TAO home page. Real-time data from moored ocean buoys for improved detection, understanding and prediction of El Nino and La Nina." /> <meta name="DC.creator" content="US Department of Commerce, National Oceanic and Atmospheric Administration, National Weather Service, National Data Buoy Center" /> <meta name="DC.subject" content="weather, buoy, weather buoy, marine, forecast, hurricane, wind, wave, offshore, surfing, temperature, meteorology, climate, ocean" /> <meta name="DC.language" scheme="DCTERMS.RFC1766" content="EN-US" /> <meta name="DC.format" content="text/html;charset=iso-8859-1" /> <meta name="DC.date.created" scheme="ISO8601" content="2005-11-01" /> <meta name="DC.date.reviewed" scheme="ISO8601" content="" /> <link href="/TAO_ndbc.css" type="text/css" rel="stylesheet" /> <style type="text/css"> .answer{ padding-left:10px;} </style>  <div id="title"> <h2 style="margin-left: 0"><img id="logo" src="/images/taolog_words.gif"/>Zonal - depth gridding</h2> </div>  <a name="top"></a> <table width="700" border="0" cellspacing="0" cellpadding="0"> <tr> <td align="right"><a href="javascript: window.print();"><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Print this text</b></font></a></td> </tr> <tr> <td colspan="2"> <p> </p> <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">All of the fields displayed as Zonal-Depth sections are fields of gridded monthly means. Gridding was done by<br /> 1) removing the Kessler (1994) CTD/XBT Objective Analysis from the temperatures,<br /> 2) linearly interpolating to these standard depths (m):<br /> 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 160, 180, 200, 225, 250, 275, 300, 400, 500<br /> 3) linearly interpolating in longitude, 4) 21-degree triangle filtering in longitude, and<br /> 5) distance-weighted binomial (1/4-1/2-1/4) filtering in depth. </font></p> <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">These gridded and smoothed anomalies are then added to the Kessler objective analysis to produce the mean XZ field.</font></p> <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">This gridding method is a variant of that used for the XY maps which was developed by Dr. William S. Kessler, Dr. Michael J. McPhaden, and Dai C. McClurg, all at NOAA/PMEL.</font></p> <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">The locations of data input to the gridding routine are indicated by the little x's on the plots.</font></p> <p> </p> </td> </tr> <tr> <td colspan="2"> </td> </tr> </table> <!--#include virtual="/tao