/[lmdze]/trunk/filtrez/inifgn.f
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revision 154 by guez, Tue Jul 7 17:49:23 2015 UTC revision 167 by guez, Mon Aug 24 16:30:33 2015 UTC
# Line 26  contains Line 26  contains
26      use acc_m, only: acc      use acc_m, only: acc
27      USE dimens_m, ONLY: iim      USE dimens_m, ONLY: iim
28      USE dynetat0_m, ONLY: xprimu, xprimv      USE dynetat0_m, ONLY: xprimu, xprimv
29        use jumble, only: new_unit
30      use numer_rec_95, only: jacobi, eigsrt      use numer_rec_95, only: jacobi, eigsrt
31    
32      real, intent(out):: eignval_v(:) ! (iim)      real, intent(out):: eignval_v(:) ! (iim)
# Line 35  contains Line 36  contains
36    
37      ! Local:      ! Local:
38    
39      REAL a(iim, iim) ! second derivative, symmetric, elements are angle^{-2}      REAL delta(iim, iim) ! second derivative, symmetric, elements are angle^{-2}
40    
41      REAL deriv_u(iim, iim), deriv_v(iim, iim)      REAL deriv_u(iim, iim), deriv_v(iim, iim)
42      ! first derivative at u and v longitudes, elements are angle^{-1}      ! first derivative at u and v longitudes, elements are angle^{-1}
43    
44      REAL eignval_u(iim)      REAL eignval_u(iim)
45      INTEGER i      INTEGER i, unit
46    
47      !----------------------------------------------------------------      !----------------------------------------------------------------
48    
# Line 59  contains Line 60  contains
60    
61      deriv_v = - transpose(deriv_u)      deriv_v = - transpose(deriv_u)
62    
63      a = matmul(deriv_v, deriv_u) ! second derivative at v longitudes      delta = matmul(deriv_v, deriv_u) ! second derivative at v longitudes
64      CALL jacobi(a, eignval_v, eignfnv)      CALL jacobi(delta, eignval_v, eignfnv)
65      CALL acc(eignfnv)      CALL acc(eignfnv)
66      CALL eigsrt(eignval_v, eignfnv)      CALL eigsrt(eignval_v, eignfnv)
67    
68      a = matmul(deriv_u, deriv_v) ! second derivative at u longitudes      delta = matmul(deriv_u, deriv_v) ! second derivative at u longitudes
69      CALL jacobi(a, eignval_u, eignfnu)      CALL jacobi(delta, eignval_u, eignfnu)
70      CALL acc(eignfnu)      CALL acc(eignfnu)
71      CALL eigsrt(eignval_u, eignfnu)      CALL eigsrt(eignval_u, eignfnu)
72    
73        call new_unit(unit)
74        open(unit, file = "inifgn_out.txt", status = "replace", action = "write")
75        write(unit, fmt = *) '"eignval_v"', eignval_v
76        close(unit)
77    
78    END SUBROUTINE inifgn    END SUBROUTINE inifgn
79    
80  end module inifgn_m  end module inifgn_m
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