| 1 | !! Diagnostics: U & V on earth coordinates |
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| 2 | |
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| 3 | MODULE module_calc_uvmet |
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| 4 | |
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| 5 | CONTAINS |
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| 6 | SUBROUTINE calc_uvmet(SCR4, cname, cdesc, cunits) |
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| 7 | |
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| 8 | USE constants_module |
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| 9 | USE module_model_basics |
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| 10 | |
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| 11 | !Arguments |
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| 12 | real,allocatable,dimension(:,:,:,:) :: SCR4 |
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| 13 | character (len=128) :: cname, cdesc, cunits |
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| 14 | |
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| 15 | !Local |
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| 16 | integer :: i, j |
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| 17 | real :: cone |
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| 18 | real, dimension(west_east_dim,south_north_dim) :: diff, alpha |
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| 19 | |
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| 20 | |
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| 21 | SCR4 = 0.0 |
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| 22 | |
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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 | SCR4(:,:,:,1) = UUU |
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| 26 | SCR4(:,:,:,2) = VVV |
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| 27 | END IF |
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| 28 | |
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| 29 | |
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| 30 | cone = 1. ! PS |
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| 31 | IF ( map_proj .eq. 1) THEN ! Lambert Conformal mapping |
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| 32 | IF (ABS(truelat1-truelat2) .GT. 0.1) THEN |
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| 33 | cone=(ALOG(COS(truelat1*RAD_PER_DEG))- & |
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| 34 | ALOG(COS(truelat2*RAD_PER_DEG))) / & |
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| 35 | (ALOG(TAN((90.-ABS(truelat1))*RAD_PER_DEG*0.5 ))- & |
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| 36 | ALOG(TAN((90.-ABS(truelat2))*RAD_PER_DEG*0.5 )) ) |
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| 37 | ELSE |
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| 38 | cone = SIN(ABS(truelat1)*RAD_PER_DEG ) |
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| 39 | ENDIF |
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| 40 | END IF |
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| 41 | |
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| 42 | |
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| 43 | diff = XLONG - stand_lon |
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| 44 | DO i = 1, west_east_dim |
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| 45 | DO j = 1, south_north_dim |
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| 46 | IF ( diff(i,j) .gt. 180. ) THEN |
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| 47 | diff(i,j) = diff(i,j) - 360. |
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| 48 | END IF |
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| 49 | IF ( diff(i,j) .lt. -180. ) THEN |
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| 50 | diff(i,j) = diff(i,j) + 360. |
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| 51 | END IF |
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| 52 | END DO |
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| 53 | END DO |
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| 54 | |
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| 55 | |
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| 56 | DO i = 1, west_east_dim |
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| 57 | DO j = 1, south_north_dim |
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| 58 | IF ( XLAT(i,j) .lt. 0. ) THEN |
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| 59 | alpha(i,j) = - diff(i,j) * cone * RAD_PER_DEG |
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| 60 | ELSE |
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| 61 | alpha(i,j) = diff(i,j) * cone * RAD_PER_DEG |
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| 62 | END IF |
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| 63 | END DO |
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| 64 | END DO |
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| 65 | |
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| 66 | |
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| 67 | DO k = 1,bottom_top_dim |
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| 68 | SCR4(:,:,k,1) = VVV(:,:,k)*sin(alpha) + UUU(:,:,k)*cos(alpha) |
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| 69 | SCR4(:,:,k,2) = VVV(:,:,k)*cos(alpha) - UUU(:,:,k)*sin(alpha) |
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| 70 | END DO |
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| 71 | |
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| 72 | |
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| 73 | cname = "uvmet" |
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| 74 | cdesc = "Rotated wind component" |
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| 75 | cunits = "m s-1" |
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| 76 | |
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| 77 | END SUBROUTINE calc_uvmet |
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| 78 | |
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| 79 | END MODULE module_calc_uvmet |
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