<div dir="auto">Hi Ian! </div><div dir="auto"><br></div><div dir="auto">Thank a lot for the clarification.</div><div><br></div><div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Wed, Apr 2, 2025 at 10:34 PM Fenty, Ian G (US 329B) <<a href="mailto:ian.fenty@jpl.nasa.gov">ian.fenty@jpl.nasa.gov</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt">Ashfaq,<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Hong is correct. Also, if you are using ecco v4r4 fields on the llc90 grid, the model geometry parameters are in this dataset:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><a href="https://podaac.jpl.nasa.gov/dataset/ECCO_L4_GEOMETRY_LLC0090GRID_V4R4" target="_blank">https://podaac.jpl.nasa.gov/dataset/ECCO_L4_GEOMETRY_LLC0090GRID_V4R4</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">grid cell area is the field ‘rA’<u></u><u></u></span></p>
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<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">If you are using ecco v4r4 fields on the 0.5-degree lat-lon grid, the model geometry parameters are in this dataset:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><a href="https://podaac.jpl.nasa.gov/dataset/ECCO_L4_GEOMETRY_05DEG_V4R4" target="_blank">https://podaac.jpl.nasa.gov/dataset/ECCO_L4_GEOMETRY_05DEG_V4R4</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">grid cell area is the field ‘area’<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">-Ian<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
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<b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">ecco-support <<a href="mailto:ecco-support-bounces@mit.edu" target="_blank">ecco-support-bounces@mit.edu</a>> on behalf of Ahmed, Ashfaq <<a href="mailto:ashfaq_ahmed@brown.edu" target="_blank">ashfaq_ahmed@brown.edu</a>><br>
<b>Date: </b>Wednesday, April 2, 2025 at 2:04</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><span style="font-size:12.0pt;color:black">PM<br>
<b>To: </b>ECCO support list, wider membership <<a href="mailto:ecco-support@mit.edu" target="_blank">ecco-support@mit.edu</a>><br>
<b>Subject: </b>[EXTERNAL] [ecco-support] How to calculate Arctic Sea Ice Area in ECCOv4?<u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt">Hi, ECCO team,
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I hope you guys are having a wonderful time.<br>
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I am writing this email to solve a problem that I am facing as I am trying to plot the Arctic sea ice area in km^2. We know that the area = sea ice conc. * grid size. However, the grid size in the Arctic cap is variable. <u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt">Can anyone please tell me how can I calculate the Arctic tile's sea ice area, considering the grid variability in mind?<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:#222222;border:solid windowtext 1.0pt;padding:0in"><img border="0" width="81" height="96" style="width:.8437in;height:1.0in" id="m_-405898972379896013_x0000_i1025" alt="Image removed by sender. Many thank to Brown University for sponsoring our 50th Anniversary celebration"></span><span style="font-size:12.0pt;color:#222222"><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Thanks, </span><span style="font-size:12.0pt;color:#222222"><u></u><u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Ashfaq Ahmed</span></b><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> (he/his)</span><span style="font-size:12.0pt;color:#222222"><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Doctoral Candidate,</span><span style="font-size:12.0pt;color:#222222"><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#0b5394"><a href="https://urldefense.us/v3/__https:/engineering.brown.edu/people/graduate-students/phd-students/phd-students-fluids-and-thermal-sciences__;!!PvBDto6Hs4WbVuu7!MSs-70m9dSQKveYwcsbYL5AineuKFFejkjQSonKXQIcBy4JKmjaG4c5wA1OfBH88atAbdTQxz-1dNhL2skaK85QEC2pA7w$" target="_blank"><span style="color:#1155cc">Center
for Fluids and Thermal Science</span></a></span><span style="font-size:12.0pt;color:#222222"><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">School of Engineering, Brown University</span><span style="font-size:12.0pt;color:#222222"><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Email:</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#0b5394"> </span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#222222"><a href="mailto:ramisa_fariha@brown.edu" target="_blank"><span style="color:#0b5394">ashfaq_ahmed@brown.edu</span></a></span><span style="font-size:12.0pt;color:#222222"><u></u><u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Profile Links:</span></b><span style="font-size:12.0pt;color:#222222"><u></u><u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"><a href="https://urldefense.us/v3/__https:/www.linkedin.com/in/ashfaqahmed40/__;!!PvBDto6Hs4WbVuu7!MSs-70m9dSQKveYwcsbYL5AineuKFFejkjQSonKXQIcBy4JKmjaG4c5wA1OfBH88atAbdTQxz-1dNhL2skaK85TXyt83iw$" target="_blank"><span style="color:#1155cc">LinkedIn</span></a> | <a href="https://urldefense.us/v3/__https:/ahmedashfaq.com/__;!!PvBDto6Hs4WbVuu7!MSs-70m9dSQKveYwcsbYL5AineuKFFejkjQSonKXQIcBy4JKmjaG4c5wA1OfBH88atAbdTQxz-1dNhL2skaK85RHHJPKXA$" target="_blank"><span style="color:#1155cc">Website</span></a> | <a href="https://urldefense.us/v3/__https:/scholar.google.com/citations?user=iiSUYgsAAAAJ&hl=en&authuser=1__;!!PvBDto6Hs4WbVuu7!MSs-70m9dSQKveYwcsbYL5AineuKFFejkjQSonKXQIcBy4JKmjaG4c5wA1OfBH88atAbdTQxz-1dNhL2skaK85R02MyvMg$" target="_blank"><span style="color:#1155cc">Google
Scholar</span></a> | <a href="https://urldefense.us/v3/__https:/www.researchgate.net/profile/Ashfaq-Ahmed-15__;!!PvBDto6Hs4WbVuu7!MSs-70m9dSQKveYwcsbYL5AineuKFFejkjQSonKXQIcBy4JKmjaG4c5wA1OfBH88atAbdTQxz-1dNhL2skaK85Qx_9uN3A$" target="_blank"><span style="color:#1155cc">ResearchGate</span></a></span></b><span style="font-size:12.0pt;color:#222222"><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:#222222">Providence, Rhode Island, USA<u></u><u></u></span></p>
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