[Ncep.list.wwatch3.discussion-group] WWIII Developer Meeting Minutes -- Wed Feb 15th 2017
Jessica Meixner - NOAA Affiliate
jessica.meixner at noaa.gov
Thu Feb 16 15:51:54 UTC 2017
WWIII Notes -- Wed Feb 15th 2017
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: http://help.webex.com.
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:
There is a potential issue reported by Natasha about ice concentration
indices changing that needs to be investigated.
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!
There has been more progress and lots of testing going on for the
implicit scheme for unstructured grids.
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.
Our next meeting is Wednesday, March 15th at 10:30am ET.
IMSG Support Scientist
NCEP/EMC Marine Modeling and Analysis Branch
NOAA Center for Weather and Climate Prediction
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