<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear Maxime, Stokes drift is definitely not included in the ECCO2 simulation that you refer to below nor, as far as I know, in any existing ECCO simulation.<div class=""><div class=""><br class=""></div><div class="">A possible, very indirect way, in which Stokes drift is included, is that the corrections applied to ECCO solutions in order to fit available observations may wrap a little bit of the consequences of Stoke’s drift in other terms, for example, surface wind stress.</div><div class=""><br class=""></div><div class="">Scripps is working on including WW3 in regional ECCO solutions. I cc Matt Mazloff, who may have more to say on this topic.<br class=""></div><div class=""><br class=""></div><div class="">Best regards, Dimitris</div><div class=""><div class=""><div><br class=""></div><div><br class=""><blockquote type="cite" class=""><div class="">On Mar 10, 2021, at 1:03 AM, Maxime Mouyen <<a href="mailto:maxime.mouyen@chalmers.se" class="">maxime.mouyen@chalmers.se</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div id="divtagdefaultwrapper" dir="ltr" style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-size: 12pt; font-family: Calibri, Helvetica, sans-serif, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols;" class=""><div style="margin-top: 0px; margin-bottom: 0px;" class="">Dear Ecco team,</div><div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px;" class=""><span class="">Does it make sense to add Stokes drift velocities (wind-correlated drift of surface waters) to the ECCO2 surface velocity? Or does ECCO2 already account for such effects?</span><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px;" class=""><span class="">(I'm using these products: <a href="https://ecco.jpl.nasa.gov/drive/files/ECCO2/cube92_latlon_quart_90S90N/WVEL.nc" class="OWAAutoLink" id="LPlnk579875" previewremoved="true">https://ecco.jpl.nasa.gov/drive/files/ECCO2/cube92_latlon_quart_90S90N/WVEL.nc</a>, VVEL.nc and UVEL.nc)</span></div><div style="margin-top: 0px; margin-bottom: 0px;" class=""><span class=""><br class=""></span></div><div style="margin-top: 0px; margin-bottom: 0px;" class=""><span class="">I<span class="Apple-converted-space"> </span><a href="https://urldefense.us/v3/__https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JC014453__;!!PvBDto6Hs4WbVuu7!byy0rl83ps-3nyLI-Uaf_QuOrnkom49kBVrgqoU-Nd9cqYdA4qrYZ3mdTyhoLO61ZDyx$" class="OWAAutoLink">read</a><span class="Apple-converted-space"> </span>that the <span class="">MITgcm used in ECCO2 "<span class="">does not include representation of surface waves" but I cannot make clear if the ECCO2 products mentioned above are subsequently forced by winds.</span></span></span></div><div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px;" class="">Thanks for your help on this matter and for providing such useful products.</div><div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px;" class="">Best regards,</div><div style="margin-top: 0px; margin-bottom: 0px;" class="">Maxime </div><div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class=""></div><div id="Signature" class=""><div id="divtagdefaultwrapper" dir="ltr" class=""><div style="margin-top: 0px; margin-bottom: 0px;" class=""><span style="color: rgb(117, 123, 128);" class="">----</span></div><span style="color: rgb(117, 123, 128);" class=""></span><div style="margin-top: 0px; margin-bottom: 0px;" class=""><span style="color: rgb(117, 123, 128);" class="">Maxime Mouyen</span></div><span style="color: rgb(117, 123, 128);" class=""></span><div style="margin-top: 0px; margin-bottom: 0px;" class=""><span style="color: rgb(117, 123, 128);" class="">Chalmers University of Technologyo</span><br class=""><span style="color: rgb(117, 123, 128);" class=""></span></div><span style="color: rgb(117, 123, 128);" class=""></span><p style="margin-top: 0px; margin-bottom: 0px;" class=""></p><span style="color: rgb(117, 123, 128);" class=""></span><div class=""><span style="color: rgb(117, 123, 128);" class="">Tel: +46 31 772 5549</span></div><span style="color: rgb(117, 123, 128);" class=""></span><p style="margin-top: 0px; margin-bottom: 0px;" class=""></p><span style="color: rgb(117, 123, 128);" class=""></span><div style="margin-top: 0px; margin-bottom: 0px;" class=""><span style="color: rgb(117, 123, 128);" class="">Onsala rymdobservatorium</span></div><span style="color: rgb(117, 123, 128);" class=""></span><div style="margin-top: 0px; margin-bottom: 0px;" class=""><span style="color: rgb(117, 123, 128);" class="">Observatorievägen 90, 439 92 Onsala, Sweden.</span></div><span style="color: rgb(117, 123, 128);" class=""></span><div style="margin-top: 0px; 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