**To**:**FERRET users mailing list <ferret_users@xxxxxxxxxxxxxxxxxxx>****Subject**:**repeat loop over depth axis****From**:**Shankar Doraiswamy <shankar@xxxxxxxxxxxxx>**- Date: Thu, 24 Jan 2002 10:39:05 +0530 (IST)
- Cc: Satheesh Shenoi <shenoi@xxxxxxxxxxxxx>
- Sender: owner-ferret_users@xxxxxxxxxxxxxxxxxxx

Hello, How do I get the repeat command to loop over the depth axis (as, say, in a FORTRAN do loop)? I am using the SODA data, which give U and V as functions of (x,y,z,t) and sea level (eta) as a function of (x,y,t). I want to define the vertical velocity w as a function of (x,y,z,t) for some calculations. To do this, I computed w at the surface (using eta, U, and V), but am not able to use the repeat loop over depth (k index) to integrate (using @din) the horizontal divergence field. Since I need w at several depths, I do not want to freeze the lower limit of the integral. A related question concerning the computation of w ... The SODA data also include a depth attribute called depthedges. The last value of this atribute charts the bottom topography. Is it possible to use this attribute in ferret? I need it to compute the w field. (As before, I also need to be able to "repeat" over depth to compute the integral using @din.) >From the SODA netCDF file ... dimensions: DEPTH = 20 ; DEPTHedges = 21 ; variables: double DEPTH(DEPTH) ; DEPTH:units = "meters" ; DEPTH:positive = "down" ; DEPTH:point_spacing = "uneven" ; DEPTH:edges = "DEPTHedges" ; double DEPTHedges(DEPTHedges) ; DEPTHedges:edges = " " ; data: DEPTH = 7.5, 22.5, 37.5, 52.5, 67.5, 82.5, 97.5, 112.5, 127.5, 142.5, 157.5, 190.61, 276.27, 443.79, 714.46, 1099.46, 1598.79, 2201.3, 2885.6, 3622.5 ; DEPTHedges = 0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 174.055, 233.44, 360.03, 579.125, 906.96, 1349.125, 1900.045, 2543.45, 3254.05, 3990.95 ; Regards, Shankar. D. Shankar Ph. (O): [91](832) 22 6253 * 4312/4400 Physical Oceanography Division, 22 1322 * 4312/4400 National Institute of Oceanography, (R): [91](832) 23 8208 Dona Paula, Fax : [91](832) 22 3340/9102 Goa 403 004, email : shankar@darya.nio.org India. shankar@csnio.ren.nic.in

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