<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:10pt"><div style="font-family: times new roman, new york, times, serif; font-size: 10pt;"><div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"><br><div id="yiv205541758"><div><div class="yiv205541758Section1"><div class="yiv205541758MsoNormal">Hi all,</div>
<div class="yiv205541758MsoNormal"> </div>
<div class="yiv205541758MsoNormal"> I am trying to read in Grads Polar stereo pre-projected sea
ice data (http://www.ifm.zmaw.de/research/remote-sensing-assimilation/sea-ice/amsr-e-sea-ice-concentration/#c4255).
I understand that a ctl file needs to be generated with pdef definitions. The
data files are in <span style="color:#C00000;">hdf </span>format.</div>
<div class="yiv205541758MsoNormal"> </div>
<div class="yiv205541758MsoNormal">Could someone help me devise a ctl file for this data.</div>
<div class="yiv205541758MsoNormal"> </div>
<div class="yiv205541758MsoNormal">Thank you in anticipation.</div><div class="yiv205541758MsoNormal"><br></div>
<div class="yiv205541758MsoNormal">Regards,</div>
<div class="yiv205541758MsoNormal">Luis</div>
<div class="yiv205541758MsoNormal"> </div>
<div class="yiv205541758MsoNormal">++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++=</div>
<div class="yiv205541758MsoNormal">The details are as follows</div>
<div class="yiv205541758MsoNormal"> </div>
<div class="yiv205541758MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";">Polar
stereographic projection with the projection plane intersecting </span></div>
<div class="yiv205541758MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";">the
earth at 70 degree and using the Hughes ellipsoid.</span> The ellipsoid used in
the Hughes software assumes a radius of 6378.273 km and an eccentricity of
0.081816153<span style="font-size:10.0pt;font-family:"Courier New";"></span></div>
<div class="yiv205541758MsoNormal"><img src="cid:1.3278044970@web130102.mail.mud.yahoo.com" height="295" hspace="12" width="299" align="left"><span style="font-size:10.0pt;font-family:"Courier New";"> </span></div>
<div class="yiv205541758MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";">-
Corner coordinates are</span></div>
<div class="yiv205541758MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";"> lat
-39.23° lat -39.23°</span></div>
<div class="yiv205541758MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";"> lon
317.76° lon 42.24°</span></div>
<div class="yiv205541758MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";"> </span></div>
<div class="yiv205541758MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";"> lat
-41.45° lat -41.45°</span></div>
<div class="yiv205541758MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";"> lon
225.00° lon 135.00°</span></div>
<div class="yiv205541758MsoNormal"> </div>
<div class="yiv205541758MsoNormal"> </div>
<div class="yiv205541758MsoNormal"> </div>
<div class="yiv205541758MsoNormal">The origin of each x, y grid is the respective pole. The
approximate outer boundaries of the Northern and Southern grids are defined in the
Table below:</div>
<div class="yiv205541758MsoNormal"> </div>
<table class="yiv205541758MsoTableGrid" style="border-collapse:collapse;border:none;" border="1" cellpadding="0" cellspacing="0">
<tbody><tr>
<td style="width:44.7pt;border:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="60">
<div class="yiv205541758MsoNormal"><b><span class="yui_3_2_0_21_1334232436802251" style="font-family:"sans-serif";">X
(km)</span></b> </div>
</td>
<td style="width:43.0pt;border:solid black 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="57">
<div class="yiv205541758MsoNormal"><b><span class="yui_3_2_0_21_1334232436802255" style="font-family:"sans-serif";">Y
(km)</span></b> </div>
</td>
<td style="width:74.2pt;border:solid black 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="99">
<div class="yiv205541758MsoNormal"><b>Latitude </b><b><span style="font-size:10.0pt;">(deg)</span></b></div>
</td>
<td colspan="2" style="width:114.05pt;border:solid black 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="152">
<div class="yiv205541758MsoNormal"><b><span class="yui_3_2_0_21_1334232436802263" style="font-family:"sans-serif";">Longitude
(deg)</span></b></div>
</td>
</tr>
<tr>
<td style="width:44.7pt;border:solid black 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="60">
<div class="yiv205541758MsoNormal">-3950</div>
</td>
<td style="width:43.0pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="57">
<div class="yiv205541758MsoNormal">4350 </div>
</td>
<td style="width:74.2pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="99">
<div class="yiv205541758MsoNormal">-39.23</div>
</td>
<td style="width:62.55pt;border-top:none;
border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="83">
<div class="yiv205541758MsoNormal">317.76</div>
</td>
<td style="width:51.5pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="69">
<div class="yiv205541758MsoNormal">corner</div>
</td>
</tr>
<tr>
<td style="width:44.7pt;border:solid black 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="60">
<div class="yiv205541758MsoNormal">0</div>
</td>
<td style="width:43.0pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="57">
<div class="yiv205541758MsoNormal">4350</div>
</td>
<td style="width:74.2pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="99">
<div class="yiv205541758MsoNormal">-51.32 </div>
</td>
<td style="width:62.55pt;border-top:none;
border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="83">
<div class="yiv205541758MsoNormal">0</div>
</td>
<td style="width:51.5pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="69">
<div class="yiv205541758MsoNormal">midpoint</div>
</td>
</tr>
<tr>
<td style="width:44.7pt;border:solid black 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="60">
<div class="yiv205541758MsoNormal">3950</div>
</td>
<td style="width:43.0pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="57">
<div class="yiv205541758MsoNormal">4350</div>
</td>
<td style="width:74.2pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="99">
<div class="yiv205541758MsoNormal">-39.23</div>
</td>
<td style="width:62.55pt;border-top:none;
border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="83">
<div class="yiv205541758MsoNormal">42.24</div>
</td>
<td style="width:51.5pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="69">
<div class="yiv205541758MsoNormal">corner</div>
</td>
</tr>
<tr>
<td style="width:44.7pt;border:solid black 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="60">
<div class="yiv205541758MsoNormal">3950 </div>
</td>
<td style="width:43.0pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="57">
<div class="yiv205541758MsoNormal">0</div>
</td>
<td style="width:74.2pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="99">
<div class="yiv205541758MsoNormal">-54.66</div>
</td>
<td style="width:62.55pt;border-top:none;
border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="83">
<div class="yiv205541758MsoNormal">90.0</div>
</td>
<td style="width:51.5pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="69">
<div class="yiv205541758MsoNormal">midpoint</div>
</td>
</tr>
<tr>
<td style="width:44.7pt;border:solid black 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="60">
<div class="yiv205541758MsoNormal">3950 </div>
</td>
<td style="width:43.0pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="57">
<div class="yiv205541758MsoNormal">-3950</div>
</td>
<td style="width:74.2pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="99">
<div class="yiv205541758MsoNormal">-41.45</div>
</td>
<td style="width:62.55pt;border-top:none;
border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="83">
<div class="yiv205541758MsoNormal">135.00</div>
</td>
<td style="width:51.5pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="69">
<div class="yiv205541758MsoNormal">corner</div>
</td>
</tr>
<tr>
<td style="width:44.7pt;border:solid black 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="60">
<div class="yiv205541758MsoNormal">0</div>
</td>
<td style="width:43.0pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="57">
<div class="yiv205541758MsoNormal">-3950</div>
</td>
<td style="width:74.2pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="99">
<div class="yiv205541758MsoNormal">-54.66</div>
</td>
<td style="width:62.55pt;border-top:none;
border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="83">
<div class="yiv205541758MsoNormal">180.00</div>
</td>
<td style="width:51.5pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="69">
<div class="yiv205541758MsoNormal">midpoint</div>
</td>
</tr>
<tr>
<td style="width:44.7pt;border:solid black 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="60">
<div class="yiv205541758MsoNormal">-3950</div>
</td>
<td style="width:43.0pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="57">
<div class="yiv205541758MsoNormal">-3950</div>
</td>
<td style="width:74.2pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="99">
<div class="yiv205541758MsoNormal">-41.45</div>
</td>
<td style="width:62.55pt;border-top:none;
border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="83">
<div class="yiv205541758MsoNormal">225.00 </div>
</td>
<td style="width:51.5pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="69">
<div class="yiv205541758MsoNormal">corner</div>
</td>
</tr>
<tr>
<td style="width:44.7pt;border:solid black 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="60">
<div class="yiv205541758MsoNormal">-3950</div>
</td>
<td style="width:43.0pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="57">
<div class="yiv205541758MsoNormal">0</div>
</td>
<td style="width:74.2pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="99">
<div class="yiv205541758MsoNormal">-54.66</div>
</td>
<td style="width:62.55pt;border-top:none;
border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="83">
<div class="yiv205541758MsoNormal">270.00</div>
</td>
<td style="width:51.5pt;border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:0in 5.4pt 0in 5.4pt;" valign="top" width="69">
<div class="yiv205541758MsoNormal">midpoint</div>
</td>
</tr>
</tbody></table>
<div class="yiv205541758MsoNormal"> </div>
<div class="yiv205541758MsoNormal"> </div>
<div class="yiv205541758MsoNormal"> </div>
<div class="yiv205541758MsoNormal"> </div>
<div class="yiv205541758MsoNormal"> </div>
</div>
</div>
</div><br><br> </div> </div> </div></body></html>