Corbitt FYI, we corrected the water levels so that the mean would match between measured and modeled. Casey Dietrich dietrich@ices.utexas.edu ---------- Forwarded message ---------- From: Casey Dietrich Date: Thu, Jun 3, 2010 at 9:48 AM Subject: Correction for CHL Water Levels To: Jane Smith , Joannes Westerink Jane, Joannes I analyzed the tidal signal in the CHL gage data between Gustav and Ike, starting at 2008/09/05/1200Z (because that is when our ADCIRC simulation starts) and ending at 2008/09/10/0000Z (because that is when the gage data begins to show effects from Ike). I computed the mean water level over that period, for both the gage data and ADCIRC, and found the following: ID ... ADCIRC ... GAGE ... CORR 10504 ... 0.33 ... 0.70 ... -0.37 10508 ... 0.42 ... 0.65 ... -0.23 10510 ... 0.46 ... 1.01 ... -0.55 - 0.10 10512 ... 0.28 ... 0.56 ... -0.28 10513 ... 0.43 ... 0.88 ... -0.44 10514 ... 0.41 ... 0.42 ... -0.01 ADCIRC dried at the CHL 10510 location, so I am suggesting an additional 10cm lowering of the gage data. Updated figures with these corrections are attached. This approach might be cheating, because we are not basing the corrections on anything other than the computed ADCIRC solution. However, we are only correcting for the tides part of that solution, and ADCIRC has demonstrated close matches to other tide data in the region relative to NAVD88 (2004.65). Our comparisons at the peak surges are still hit-and-miss. What do you think? Is this an appropriate methodology and set of corrections? Corbitt Here is Jane's e-mail with the USACE-CHL water levels. These files should contain data for both Gustav and Ike. Casey Dietrich dietrich@ices.utexas.edu ---------- Forwarded message ---------- From: Smith, Jane M ERDC-CHL-MS Date: Thu, Nov 19, 2009 at 9:52 AM Subject: RE: Gage Data for Gustav To: Casey Dietrich Thanks, Casey. Attached are the files with gauge locations and the water level measurements. Note that CHL10514 moved at some point during the deployment, so may not be reliable. Gauges CHL10510, CHL10513, and CHL10504 are in Biloxi Marsh and CHL 10512, CHL10508, and CHL10514 are in Terrebonne. Terrebonne appears to be much more open (less marsh) than the ADCIRC grid I've been using. I am told that the depth values in the files are total depth (elevation of the gauge above the bottom + the water depth above the gauge) and that the measurement has been corrected for atmospheric pressure. I have requested the barometric pressure record, too, but don't have it yet. The times in the files are labeled as CST, but I believe they are UTC. I have asked the guy who ran the analysis to recheck it. If you need more information, let me know. Thanks for the ADCIRC files. Can you tell me the time in UTC of the first output listed in the file, so I can match up the simulations? I would be nice to have output at 30-min intervals to match closer with Andrew's gauges. Our gauges recorded hourly on the hour. Thanks, Jane -----Original Message----- From: Casey Dietrich [mailto:caseydietrich@gmail.com] Sent: Wednesday, November 18, 2009 2:49 PM To: Smith, Jane M ERDC-CHL-MS Subject: Re: Gage Data for Gustav Jane Thanks, that would be great. Please send the Gustav water level data when you can. I've posted our wind and water level files in a directory on Gold: /erdc1/HURR/TRANSFER/casey-to-jane/Gustav091109a The grid file (fort.14) and the ADCIRC output files for water levels (fort.63.gz) and winds (fort.74.gz) should all be there. Note that these files are from a run with the coupled SWAN+ADCIRC, so the water levels show the effects of the wave radiation stress gradients. The output files contain data in one-hour increments, starting at 2008/08/30/0100Z and ending at 2008/09/04/0000Z (so about five days total). I seem to remember you needed the ADCIRC information in tighter increments, like every 15 or 30 minutes? Please let me know, and I will re-run to produce better output files. Thanks again. Casey Dietrich dietrich.15@nd.edu On Wed, Nov 18, 2009 at 3:34 PM, Smith, Jane M ERDC-CHL-MS wrote: > Hi Casey -- Yes, you can use our water level data. I just put in a > question to the guy who processed it to find out if he made a > correction for atmospheric pressure. Once I hear back, I will pass it on. > > Also, I would like to get your wind and water level files to run the > full-plane STWAVE (I'll need the grid file, too, to do the interpolation). > > Thanks, > Jane > > -----Original Message----- > From: Casey Dietrich [mailto:caseydietrich@gmail.com] > Sent: Wednesday, November 18, 2009 12:42 PM > To: Smith, Jane M ERDC-CHL-MS > Cc: Joannes Westerink > Subject: Gage Data for Gustav > > Jane > > I hope you had a productive visit to Notre Dame. I heard your seminar > went really well. > > We have recently completed our first test run using the best winds for > Gustav. I have placed a series of validation results on our Web page > here: > > http://www.nd.edu/~jdietri1/G&I/ > > The HWMs use color-coded markers, while the other data sets use gray markers. > Just click on the gray marker to open the time series hydrographs at > that station. As you can see, we are doing fairly well for a first try. > > Joannes mentioned you also had some gages for Gustav. Would it be > alright if we compared our ADCIRC results to them? If so, then can > you please send your data? > > Thank you. > > Casey Dietrich > dietrich.15@nd.edu > 2011/05/27 Rich Estes The file, IMEDS_IkeUSACE.f90, takes the files, rawSTNID_waves.txt and converts them into IMEDS format. The *.f90 file also uses the file stationcoord.txt to include the location of the station in IMEDS format.