| 1 | !! Diagnostics: U & V on earth coordinates |
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| 2 | ! from ARWpost postprocessing routine from the WRF package. |
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| 3 | |
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| 4 | SUBROUTINE calc_uvmet(UUU,VVV,SCRa, SCRb, i3dflag) |
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| 5 | |
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| 6 | IMPLICIT NONE |
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| 7 | |
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| 8 | !Arguments |
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| 9 | real, allocatable, dimension(:,:,:) :: SCRa, SCRb |
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| 10 | character (len=128) :: cname, cdesc, cunits |
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| 11 | |
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| 12 | !Local |
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| 13 | integer :: i, j, k |
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| 14 | integer :: i3dflag |
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| 15 | real :: cone |
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| 16 | real, dimension(west_east_dim,south_north_dim) :: diff, alpha |
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| 17 | |
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| 18 | cname = "uvmet" |
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| 19 | cdesc = "Rotated wind component" |
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| 20 | cunits = "m s-1" |
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| 21 | |
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| 22 | use com_mod |
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| 23 | |
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| 24 | IF ( map_proj .ge. 3 ) THEN ! No need to rotate |
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| 25 | IF ( i3dflag == 1 ) THEN |
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| 26 | SCRa = UUU |
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| 27 | SCRb = VVV |
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| 28 | ENDIF |
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| 29 | IF ( i3dflag == 0 ) THEN |
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| 30 | SCRa(:,:,1) = U10(:,:) |
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| 31 | SCRb(:,:,1) = V10(:,:) |
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| 32 | END IF |
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| 33 | RETURN |
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| 34 | END IF |
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| 35 | |
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| 36 | |
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| 37 | cone = 1. ! PS |
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| 38 | IF ( map_proj .eq. 1) THEN ! Lambert Conformal mapping |
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| 39 | IF (ABS(truelat1-truelat2) .GT. 0.1) THEN |
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| 40 | cone=(ALOG(COS(truelat1*RAD_PER_DEG))- & |
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| 41 | ALOG(COS(truelat2*RAD_PER_DEG))) / & |
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| 42 | (ALOG(TAN((90.-ABS(truelat1))*RAD_PER_DEG*0.5 ))- & |
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| 43 | ALOG(TAN((90.-ABS(truelat2))*RAD_PER_DEG*0.5 )) ) |
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| 44 | ELSE |
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| 45 | cone = SIN(ABS(truelat1)*RAD_PER_DEG ) |
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| 46 | ENDIF |
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| 47 | END IF |
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| 48 | |
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| 49 | |
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| 50 | diff = XLONG - stand_lon |
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| 51 | DO i = 1, west_east_dim |
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| 52 | DO j = 1, south_north_dim |
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| 53 | IF ( diff(i,j) .gt. 180. ) THEN |
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| 54 | diff(i,j) = diff(i,j) - 360. |
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| 55 | END IF |
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| 56 | IF ( diff(i,j) .lt. -180. ) THEN |
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| 57 | diff(i,j) = diff(i,j) + 360. |
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| 58 | END IF |
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| 59 | END DO |
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| 60 | END DO |
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| 61 | |
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| 62 | |
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| 63 | DO i = 1, west_east_dim |
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| 64 | DO j = 1, south_north_dim |
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| 65 | IF ( XLAT(i,j) .lt. 0. ) THEN |
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| 66 | alpha(i,j) = - diff(i,j) * cone * RAD_PER_DEG |
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| 67 | ELSE |
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| 68 | alpha(i,j) = diff(i,j) * cone * RAD_PER_DEG |
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| 69 | END IF |
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| 70 | END DO |
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| 71 | END DO |
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| 72 | |
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| 73 | |
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| 74 | |
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| 75 | IF ( i3dflag == 1 ) THEN |
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| 76 | DO k = 1,bottom_top_dim |
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| 77 | SCRa(:,:,k) = VVV(:,:,k)*sin(alpha) + UUU(:,:,k)*cos(alpha) |
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| 78 | SCRb(:,:,k) = VVV(:,:,k)*cos(alpha) - UUU(:,:,k)*sin(alpha) |
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| 79 | END DO |
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| 80 | ELSE |
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| 81 | SCRa(:,:,1) = V10(:,:)*sin(alpha) + U10(:,:)*cos(alpha) |
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| 82 | SCRb(:,:,1) = V10(:,:)*cos(alpha) - U10(:,:)*sin(alpha) |
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| 83 | END IF |
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| 84 | |
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| 85 | END SUBROUTINE calc_uvmet |
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| 86 | |
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