<div dir="ltr"><p id="gmail-docs-internal-guid-b0981ffa-4775-25b1-02db-25d038f0890f" style="line-height:1.728;margin-top:0pt;margin-bottom:0pt" dir="ltr"><font size="2"><span style="font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline">WWIII Notes -- Wed Feb 15th 2017</span></font></p><font size="2"><br></font><p style="line-height:1.38;margin-top:0pt;margin-bottom:0pt" dir="ltr"><font size="2"><span style="font-family:arial;color:rgb(34,34,34);background-color:rgb(255,255,255);font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline">Hi Everyone,</span></font></p><font size="2"><br></font><p style="line-height:1.38;margin-top:0pt;margin-bottom:0pt" dir="ltr"><font size="2"><span style="font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline">Thanks to everyone who joined us yesterday for the meeting. We again had several people have trouble with the webex interface for screen sharing. Webex does have a website for troubleshooting help: </span><span style="color:rgb(0,0,255)"><a style="text-decoration:none" href="http://help.webex.com"><span style="font-family:arial;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline">http://help.webex.com</span></a></span><span style="font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline">. For those of you who had technical difficulty and have not already received a copy of the presentation please let me know, so that I can resend that. Next time we will send a copy of the presentation out in advance. My notes from the meeting are below: </span></font></p><font size="2"><br></font><ul style="margin-top:0pt;margin-bottom:0pt"><li style="list-style-type:disc;font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline" dir="ltr"><p style="line-height:1.38;margin-top:0pt;margin-bottom:0pt" dir="ltr"><font size="2"><span style="font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline">There is a potential issue reported by Natasha about ice concentration indices changing that needs to be investigated. <br></span></font></p></li><li style="list-style-type:disc;font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline" dir="ltr"><p style="line-height:1.38;margin-top:0pt;margin-bottom:0pt" dir="ltr"><font size="2"><span style="font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline">Tetsu Hara gave a presentation on the work of the URI team. The first part was results from experiments testing the spatial resolution sensitivity for hurricane waves. From these experiments, they found that HS and mean wave lengths were significantly overestimated when using coarse (> 1/12 degree) meshes. The second part of their talk compared ST2 and ST4 for Hurricane Ivan. In these experiments ST4 overestimated the wave heights, although it was suggested that this bias can be reduced by trying different values of the SIN4 namelist BETAMAX, which has different optimal values depending on the wind source. In addition, they pointed out the differences in the drag coefficients between ST2 and ST4 and where there are some abnormal values of CD that appear. Thank you to the URI team for these interesting and useful studies! </span></font></p></li><li style="list-style-type:disc;font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline" dir="ltr"><p style="line-height:1.38;margin-top:0pt;margin-bottom:0pt" dir="ltr"><font size="2"><span style="font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline">There has been more progress and lots of testing going on for the implicit scheme for unstructured grids. </span></font></p></li></ul><font size="2"><br></font><p style="line-height:1.38;margin-top:0pt;margin-bottom:0pt" dir="ltr"><font size="2"><span style="font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline">As always please let me know if there are any issues we need to bring up or things you would like to present at a future meeting. <br></span></font></p><font size="2"><br></font><p style="line-height:1.38;margin-top:0pt;margin-bottom:0pt" dir="ltr"><font size="2"><span style="font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline">Our next meeting is Wednesday, March 15th at 10:30am ET. </span></font></p><font size="2"><br></font><p style="line-height:1.38;margin-top:0pt;margin-bottom:0pt" dir="ltr"><font size="2"><span style="font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline">Best, </span></font></p><font size="2"><span style="font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline">Jessica <br></span></font><span style="font-size:11pt;font-family:arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline"></span><br>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr">Jessica Meixner<div>IMSG Support Scientist </div><div>NCEP/EMC Marine Modeling and Analysis Branch </div><div>NOAA Center for Weather and Climate Prediction </div></div></div></div></div>
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