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[ferret_users] locating the depth of maximum



Dear Ferreters
G'day

I want to locate the depth of maximum of AMOC in my model data. Here is the data

   name               title                                          I         J             K         L
 ATLMOC   ATL[I=@SUM,K=@RSUM]            ...       1:331     1:75      1:140

!!!!! for finding maximum of ATLMOC for a fixed latitude (J=246) and depth level range (K=36:65) for time (L=140)   !!!!!!!!

list ATLMOC[j=246,k=36:65@max,l=140]
results = 1.670E+07

!!!  Now I want to locate the depth of this maximum at j=246 and l=140 but this command is not working and it is not showing any value  !!!!!!
list ATLMOC[j=246,k=@loc:16700000,l=140]
             
VARIABLE : DEPTH (m) of 16700000 in ATL[I=@SUM,K=@RSUM] (m)
                        X=0.5:360.5, Z=0:6004
                       FILENAME : moc140.nc
                       Y        : 246
                      DEPTH (m): 0 to 6004 (location of 16700000)
                      TIME     : 02-JUL-0140 12:00 NOLEAP
                      ....

One can see the depth and its level (k) for the maximum value by

list ATLMOC[j=246,k=36:65,l=140]

333.9   / 36:  8.721E+06
 370.7   / 37:  9.703E+06
 411.8   / 38:  1.076E+07
 457.6   / 39:  1.186E+07
 508.6   / 40:  1.296E+07
 565.3   / 41:  1.399E+07
 628     / 42:  1.486E+07
 697.3   / 43:  1.565E+07
 773.4   / 44:  1.632E+07
 856.7   / 45:  1.670E+07  !!! depth level of maximum value !!!!!1
 947.4   / 46:  1.660E+07
 1045.9  / 47:  1.601E+07
 1152    / 48:  1.506E+07
 1265.9  / 49:  1.395E+07
 1387.4  / 50:  1.277E+07
 1516.4  / 51:  1.150E+07
 1652.6  / 52:  1.006E+07
 1795.7  / 53:  8.410E+06
 1945.3  / 54:  6.652E+06
 2101    / 55:  4.997E+06
 2262.4  / 56:  3.281E+06
 2429    / 57:  1.515E+06
 2600.4  / 58: -3.571E+05
 2776    / 59: -1.591E+06
 2955.6  / 60: -2.326E+06
 3138.6  / 61: -2.764E+06
 3324.6  / 62: -2.772E+06
 3513.4  / 63: -2.801E+06
 3704.7  / 64: -2.813E+06
 3898    / 65: -2.774E+06

So I want to know how to locate the depth for the maximum value? I can not understand what mistake I am doing for this simple calculation. 

Thanks in advance. 

Cheers, Saurabh

--


REGARDS

Saurabh Rathore
Research Scholar (PhD.)
Centre For Oceans, Rivers, Atmosphere & Land Science Technology
Indian Institute Of Technology, Kharagpur
contact :- 91- 8345984434

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