|
Last change
on this file since 5150 was
2598,
checked in by Ehouarn Millour, 8 years ago
|
|
Cleanup in the dynamics: turn serre.h into module serre_mod.F90
EM
|
|
File size:
1.1 KB
|
| Line | |
|---|
| 1 | module principal_cshift_m |
|---|
| 2 | |
|---|
| 3 | implicit none |
|---|
| 4 | |
|---|
| 5 | contains |
|---|
| 6 | |
|---|
| 7 | subroutine principal_cshift(is2, xlon, xprimm) |
|---|
| 8 | |
|---|
| 9 | ! Add or subtract 2 pi so that xlon is near [-pi, pi], then cshift |
|---|
| 10 | ! so that xlon is in ascending order. Make the same cshift on |
|---|
| 11 | ! xprimm. |
|---|
| 12 | |
|---|
| 13 | use nrtype, only: twopi |
|---|
| 14 | use serre_mod, only: clon |
|---|
| 15 | |
|---|
| 16 | include "dimensions.h" |
|---|
| 17 | ! for iim |
|---|
| 18 | |
|---|
| 19 | integer, intent(in):: is2 |
|---|
| 20 | real, intent(inout):: xlon(:), xprimm(:) ! (iim + 1) |
|---|
| 21 | |
|---|
| 22 | !----------------------------------------------------- |
|---|
| 23 | |
|---|
| 24 | if (is2 /= 0) then |
|---|
| 25 | IF (clon <= 0.) THEN |
|---|
| 26 | IF (is2 /= 1) THEN |
|---|
| 27 | xlon(:is2 - 1) = xlon(:is2 - 1) + twopi |
|---|
| 28 | xlon(:iim) = cshift(xlon(:iim), shift = is2 - 1) |
|---|
| 29 | xprimm(:iim) = cshift(xprimm(:iim), shift = is2 - 1) |
|---|
| 30 | END IF |
|---|
| 31 | else |
|---|
| 32 | xlon(is2 + 1:iim) = xlon(is2 + 1:iim) - twopi |
|---|
| 33 | xlon(:iim) = cshift(xlon(:iim), shift = is2) |
|---|
| 34 | xprimm(:iim) = cshift(xprimm(:iim), shift = is2) |
|---|
| 35 | end IF |
|---|
| 36 | end if |
|---|
| 37 | |
|---|
| 38 | xlon(iim + 1) = xlon(1) + twopi |
|---|
| 39 | xprimm(iim + 1) = xprimm(1) |
|---|
| 40 | |
|---|
| 41 | end subroutine principal_cshift |
|---|
| 42 | |
|---|
| 43 | end module principal_cshift_m |
|---|
Note: See
TracBrowser
for help on using the repository browser.
