| [2336] | 1 | SUBROUTINE enercin ( vcov, ucov, vcont, ucont, ecin ) |
|---|
| [524] | 2 | ! |
|---|
| [2336] | 3 | !------------------------------------------------------------------------------- |
|---|
| 4 | ! Authors: P. Le Van. |
|---|
| 5 | !------------------------------------------------------------------------------- |
|---|
| 6 | ! Purpose: Compute kinetic energy at sigma levels. |
|---|
| 7 | IMPLICIT NONE |
|---|
| 8 | include "dimensions.h" |
|---|
| 9 | include "paramet.h" |
|---|
| 10 | include "comgeom.h" |
|---|
| 11 | !=============================================================================== |
|---|
| 12 | ! Arguments: |
|---|
| 13 | REAL, INTENT(IN) :: vcov (ip1jm, llm) |
|---|
| 14 | REAL, INTENT(IN) :: ucov (ip1jmp1,llm) |
|---|
| 15 | REAL, INTENT(IN) :: vcont (ip1jm, llm) |
|---|
| 16 | REAL, INTENT(IN) :: ucont (ip1jmp1,llm) |
|---|
| 17 | REAL, INTENT(OUT) :: ecin (ip1jmp1,llm) |
|---|
| 18 | !=============================================================================== |
|---|
| 19 | ! Notes: |
|---|
| 20 | ! . V |
|---|
| 21 | ! i,j-1 |
|---|
| [524] | 22 | ! |
|---|
| [2336] | 23 | ! alpha4 . . alpha1 |
|---|
| 24 | ! |
|---|
| 25 | ! |
|---|
| 26 | ! U . . P . U |
|---|
| 27 | ! i-1,j i,j i,j |
|---|
| 28 | ! |
|---|
| 29 | ! alpha3 . . alpha2 |
|---|
| 30 | ! |
|---|
| 31 | ! |
|---|
| 32 | ! . V |
|---|
| 33 | ! i,j |
|---|
| 34 | ! |
|---|
| 35 | ! Kinetic energy at scalar point P(i,j) (excluding poles) is: |
|---|
| 36 | ! Ecin = 0.5 * U(i-1,j)**2 *( alpha3 + alpha4 ) + |
|---|
| 37 | ! 0.5 * U(i ,j)**2 *( alpha1 + alpha2 ) + |
|---|
| 38 | ! 0.5 * V(i,j-1)**2 *( alpha1 + alpha4 ) + |
|---|
| 39 | ! 0.5 * V(i, j)**2 *( alpha2 + alpha3 ) |
|---|
| 40 | !=============================================================================== |
|---|
| 41 | ! Local variables: |
|---|
| 42 | INTEGER :: l, ij, i |
|---|
| 43 | REAL :: ecinni(iip1), ecinsi(iip1), ecinpn, ecinps |
|---|
| 44 | !=============================================================================== |
|---|
| 45 | DO l=1,llm |
|---|
| 46 | DO ij = iip2, ip1jm -1 |
|---|
| 47 | ecin(ij+1,l)=0.5*(ucov(ij ,l)*ucont(ij ,l)*alpha3p4(ij +1) & |
|---|
| 48 | + ucov(ij+1 ,l)*ucont(ij+1 ,l)*alpha1p2(ij +1) & |
|---|
| 49 | + vcov(ij-iim,l)*vcont(ij-iim,l)*alpha1p4(ij +1) & |
|---|
| 50 | + vcov(ij+1 ,l)*vcont(ij+1 ,l)*alpha2p3(ij +1) ) |
|---|
| 51 | END DO |
|---|
| 52 | !--- Correction: ecin(1,j,l)= ecin(iip1,j,l) |
|---|
| 53 | DO ij=iip2,ip1jm,iip1; ecin(ij,l) = ecin(ij+iim,l); END DO |
|---|
| [524] | 54 | |
|---|
| [2336] | 55 | !--- North pole |
|---|
| 56 | DO i=1,iim |
|---|
| 57 | ecinni(i) = vcov(i,l)*vcont(i,l)*aire(i) |
|---|
| 58 | END DO |
|---|
| 59 | ecinpn = 0.5*SUM(ecinni(1:iim))/apoln |
|---|
| 60 | DO ij=1,iip1; ecin(ij,l)=ecinpn; END DO |
|---|
| [524] | 61 | |
|---|
| [2336] | 62 | !--- South pole |
|---|
| 63 | DO i=1,iim |
|---|
| 64 | ecinsi(i) = vcov(i+ip1jmi1,l)*vcont(i+ip1jmi1,l)*aire(i+ip1jm) |
|---|
| 65 | END DO |
|---|
| 66 | ecinps = 0.5*SUM(ecinsi(1:iim))/apols |
|---|
| 67 | DO ij=1,iip1; ecin(ij+ip1jm,l)=ecinps; END DO |
|---|
| 68 | END DO |
|---|
| [524] | 69 | |
|---|
| [2336] | 70 | END SUBROUTINE enercin |
|---|
| [524] | 71 | |
|---|
