Date: Tue, 08 Apr 2003 08:33:06 -0600 From: "Stan Benjamin" Here are some answers from Tom Kent. Thanks, Tom. Stan -------- Original Message -------- From: Tom Kent To: stan.benjamin@noaa.gov Subject: Re: [Fwd: Re: Instructions: Displaying 40km RUC data on the CONUS scale] Stan, Here's the scoop on the questions being asked...First, OB1 will not have this in it. It was shipped out a long time ago. We are at the tail end of OB2 and probably will not be putting it into there either unless headquarters deems it absolutely necessary at this late juncture. The main reason for the people back east wanting us to clip this data is because of disk space concerns with the netcdf files. When I say clipped I mean that the cdl file has x + y reduced from the grid236 values of 151x113 down to 58x58(regional clip). This is done with the mesoEta grids also..... The values below are the netcdf files clipped to 58x58: -rwxrwxr-x 1 fxa fxalpha 7537572 Apr 7 08:59 20030407_0800* -rwxrwxr-x 1 fxa fxalpha 16889492 Apr 7 10:29 20030407_0900* -rwxrwxr-x 1 fxa fxalpha 7537572 Apr 7 10:56 20030407_1000* -rwxrwxr-x 1 fxa fxalpha 7537572 Apr 7 12:00 20030407_1100* -rwxrwxr-x 1 fxa fxalpha 16889492 Apr 7 13:40 20030407_1200* -rwxrwxr-x 1 fxa fxalpha 7537572 Apr 7 13:53 20030407_1300* -rwxrwxr-x 1 fxa fxalpha 7537572 Apr 7 15:55 20030407_1400* The full grid at 151x113 produces this: -rwxrwxr-x 1 fxa fxalpha 85603676 Apr 7 17:07 20030407_1500* -rwxrwxr-x 1 fxa fxalpha 38168536 Apr 7 17:28 20030407_1600* -rwxrwxr-x 1 fxa fxalpha 38168536 Apr 7 17:52 20030407_1700* -rwxrwxr-x 1 fxa fxalpha 85603676 Apr 7 19:24 20030407_1800* -rwxrwxr-x 1 fxa fxalpha 38168536 Apr 7 20:01 20030407_1900* -rwxrwxr-x 1 fxa fxalpha 38168536 Apr 7 20:56 20030407_2000* -rwxrwxr-x 1 fxa fxalpha 85603676 Apr 7 22:20 20030407_2100* -rwxrwxr-x 1 fxa fxalpha 38168536 Apr 7 22:55 20030407_2200* The non clipped files are about ~5 times the size. So here are the options for OB1 + OB2 to view CONUS scale RUC40: Follow the previous instructions that we sent out with a disclaimer that it will allow display of RUC 40km on the CONUS scale (but it will still be clipped to a regional scale depending on your location). Both RUC40 + RUC80 will appear in the volume browser. The RUC80 will not be clipped and the RUC40 will be....(this is similar to the eta and the mesoEta) So here are the options for OB1 + OB2 to view FULL CONUS scale RUC40: If site managers don't believe that the extra disk space used is a problem then they can do the following: On the DS machine: cd $FXA_HOME/data edit the ruc236.cdl. Look for the dimensions x + y. They are assigned to be 58 + 58. Change X to be 151 and Y to be 113. Scroll down and look for cdlDate: change the date to anything more recent than what it's set to. cd $FXA_HOME/data/localization/nationalData edit the file gridSourceTable.template and look for the RUC40 source. Go to the 5th column and you'll see this out thru the 9th column: @@@ruc2Clip,grid236|-151|113|RUC40 |3,4 Change these columns to be this: grid236|151|113|RUC40 |2,3,4 The differences are that the clip is removed, the minus sign in front of the X value (-151) is removed and a 2 is added to the scales column. cd $FXA_HOME/data/localization/scripts run ./mainScript.csh -grids $FXA_LOCAL_SITE $FXA_LOCAL_SITE The grids task is the only task that needs to be done... - REMOVE the template file in the netcdf directory: rm $FXA_DATA/Grid/SBN/netCDF/GRID236/RUC2/template - RESTART the GribDecoder. (Just kill the GribDecoder process and it will restart on it's own. PLEASE NOTE that changes will only take place when new data comes in! This will not change existing netcdf files.... WS display machine: On the WS machine that you are running D2D on, it's necessary to run a localization. (If you have multiple WS machines, then this needs to be done on each one.) cd $FXA_HOME/data edit the ruc236.cdl. Look for the dimensions x + y. They are assigned to be 58 + 58. Change X to be 151 and Y to be 113. Scroll down and look for cdlDate: change the date to anything more recent than what it's set to. cd $FXA_HOME/data/localization/scripts run ./mainScript.csh -grids $FXA_LOCAL_SITE $FXA_LOCAL_SITE The grids task is the only task that needs to be done... - RESTART D2D In summary....if people just want to view the RUC40 on the CONUS scale and don't mind having it clipped, then just the scales in the gridSourceTable.template need to be changed and a localization done. This has no bearing on the netcdf file size or the cdl. If people want the full resolution on the CONUS scale, then they will have to edit the cdl files in addition to the gridSourceTable.template before localizing. Doing this will greatly affect the size of the netcdf files. Hope this helps... Tom Kent