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Last change
on this file since 161 was
161,
checked in by pinsard, 15 years ago
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conversion from IDL help header syntax to IDLDOC 2. header syntax
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File size:
1.4 KB
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| 1 | ; Name: fsbeta |
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| 2 | ; ----- |
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| 3 | ; |
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| 4 | ; Purpose : |
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| 5 | ; -------- |
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| 6 | ; used for the computation of the the local Brunt-Vaisala frequency |
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| 7 | ; |
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| 8 | ; Input : potential temperature tn, salinity sn |
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| 9 | ; ------ |
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| 10 | ; |
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| 11 | ; References : |
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| 12 | ; ----------- |
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| 13 | ; McDougall, T. J., J. Phys. Oceanogr., 17, 1950-1964, 1987. |
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| 14 | ; |
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| 15 | ; Modifications : |
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| 16 | ; -------------- |
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| 17 | ; Original : 94-07 (G. Madec, M. Imbard) |
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| 18 | ; Additions : 97-07 (G. Madec) introduction of statement functions |
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| 19 | ; Idl version : 98-12 (M. Levy) |
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| 20 | ;---------------------------------------------------------------------- |
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| 21 | FUNCTION fsbeta, pft, pfs, pfh |
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| 22 | ; |
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| 23 | ; beta |
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| 24 | ; ==== |
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| 25 | ; |
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| 26 | ; fsbeta: saline expension coefficients |
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| 27 | ; pft : potential temperature in degrees celcius |
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| 28 | ; pfs : salinity anomaly (s-35) in psu |
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| 29 | ; pfh : depth in meters |
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| 30 | ; |
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| 31 | z = $ |
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| 32 | ( ( -0.415613e-09 * pft + 0.555579e-07 ) * pft $ |
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| 33 | - 0.301985e-05 ) * pft $ |
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| 34 | + 0.785567e-03 $ |
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| 35 | +( 0.515032e-08 * pfs + 0.788212e-08 * pft - 0.356603e-06 ) * pfs $ |
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| 36 | +( ( 0.121551e-17 * pfh $ |
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| 37 | - 0.602281e-15 * pfs $ |
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| 38 | - 0.175379e-14 * pft + 0.176621e-12 ) * pfh $ |
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| 39 | + 0.408195e-10 * pfs $ |
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| 40 | +( - 0.213127e-11 * pft + 0.192867e-09 ) * pft $ |
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| 41 | - 0.121555e-07 ) * pfh |
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| 42 | return, z |
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| 43 | end |
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