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<p class="MsoNormal">Dear Anne-Marie,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The model uses a curvilinear lat-lon-cap (LLC) grid, and its x- and y-directions are not necessarily along the zonal and meridional directions (See the attached figure).
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We provide the rotated monthly-averaged stress along zonal (east-west) and meridional (north-south) direction: oceTAUE (<a href="https://ecco.jpl.nasa.gov/drive/files/Version4/Release3/nctiles_monthly/oceTAUE">https://ecco.jpl.nasa.gov/drive/files/Version4/Release3/nctiles_monthly/oceTAUE</a>)
and oceTAUN (<a href="https://ecco.jpl.nasa.gov/drive/files/Version4/Release3/nctiles_monthly/oceTAUN">https://ecco.jpl.nasa.gov/drive/files/Version4/Release3/nctiles_monthly/oceTAUN</a>). The corresponding variables along the native x- and y-directions are
<a href="https://ecco.jpl.nasa.gov/drive/files/Version4/Release3/nctiles_monthly/oceTAUX">
oceTAUX</a> and <a href="https://ecco.jpl.nasa.gov/drive/files/Version4/Release3/nctiles_monthly/oceTAUY">
oceTAUY</a>. For sea-ice free regions, these variables are the wind stress. But for sea-ice covered regions, these variables are the stress between the sea-ice and the liquid ocean.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">More generally, one can use the Matlab routine <a href="https://github.com/gaelforget/gcmfaces/blob/master/gcmfaces_calc/calc_UV_zonmer.m">
calc_UV_zonmer.m</a> in gcmfaces to rotate vectors along the native x- and y-direction to zonal and meridional directions (or vice versa), as pointed out by Hong.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Cheers,<o:p></o:p></p>
<p class="MsoNormal">Ou Wang<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black"><ecco-support-bounces@mit.edu> on behalf of Anna-Marie Strehl <astrehl@geomar.de><br>
<b>Reply-To: </b>"ECCO support list, wider membership" <ecco-support@mit.edu><br>
<b>Date: </b>Friday, November 29, 2019 at 6:52 AM<br>
<b>To: </b>"ecco-support@mit.edu" <ecco-support@mit.edu><br>
<b>Subject: </b>[EXTERNAL] [ecco-support] Data of Version4/Release3<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Dear ECCO support team,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">I am using ECCO/Version4/Release3 to analyse the North Atlantic. Therefore, I connect the tiles 0003 and 0011, which perfectly works for the data I used until now.
For a new topic, I need the wind stress. Unfortunately, this occurs not to be continuous at the boundary between the tiles. Do you know what is the reason for this bug? Is there something special I have to consider when using this variable?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">To illustrate my problem, I produced a simple plot of the wind stress in zonal direction and one of the sea surface height (which is continuous). You can find the
matlab-code and the resulting plots in the appendix.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Thanks in advance!<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Best regards,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Anna-Marie Strehl<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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