| 1 | MODULE conf_dat_m |
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| 2 | ! |
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| 3 | !******************************************************************************* |
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| 4 | |
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| 5 | PRIVATE |
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| 6 | PUBLIC :: conf_dat2d, conf_dat3d |
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| 7 | |
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| 8 | |
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| 9 | CONTAINS |
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| 10 | |
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| 11 | |
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| 12 | !------------------------------------------------------------------------------- |
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| 13 | ! |
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| 14 | SUBROUTINE conf_dat2d(title, xd, yd, xf, yf, champd, interbar) |
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| 15 | ! |
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| 16 | !------------------------------------------------------------------------------- |
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| 17 | ! Author: P. Le Van |
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| 18 | !------------------------------------------------------------------------------- |
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| 19 | ! Purpose: Configure the 2D data field "champd" so that: |
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| 20 | ! - Longitudes are in [ -pi pi ] |
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| 21 | ! - Latitudes are in [ pi/2. -pi/2 ] |
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| 22 | ! * xd / yd are initial lon / lats. |
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| 23 | ! * xf / yf are output lon / lats, possibly modified to satisfy configuration. |
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| 24 | ! * interbar is TRUE for barycentric interpolation. |
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| 25 | !------------------------------------------------------------------------------- |
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| 26 | USE assert_eq_m, ONLY: assert_eq |
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| 27 | IMPLICIT NONE |
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| 28 | !------------------------------------------------------------------------------- |
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| 29 | ! Arguments: |
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| 30 | CHARACTER(LEN=*), INTENT(IN) :: title |
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| 31 | REAL, INTENT(IN) :: xd(:), yd(:) ! dim (lons) (lats) |
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| 32 | REAL, INTENT(INOUT) :: xf(:), yf(:) ! dim (lons) (lats) |
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| 33 | REAL, INTENT(INOUT) :: champd(:,:) ! dim (lons,lats) |
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| 34 | LOGICAL, INTENT(IN) :: interbar |
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| 35 | !------------------------------------------------------------------------------- |
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| 36 | ! Local variables: |
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| 37 | CHARACTER(LEN=256) :: modname="conf_dat2d" |
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| 38 | INTEGER :: i, j, ip180, ind, lons, lats |
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| 39 | LOGICAL :: radlon, invlon ,radlat, invlat |
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| 40 | REAL :: pi, pis2, depi, rlatmin, rlatmax, oldxd1 |
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| 41 | REAL, ALLOCATABLE :: xtemp(:) , ytemp(:), champf(:,:) |
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| 42 | !------------------------------------------------------------------------------- |
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| 43 | lons=assert_eq(SIZE(xd),SIZE(xf),SIZE(champd,1),TRIM(modname)//" lons") |
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| 44 | lats=assert_eq(SIZE(yd),SIZE(yf),SIZE(champd,2),TRIM(modname)//" lats") |
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| 45 | ALLOCATE(xtemp(lons),ytemp(lats)); xtemp(:)=xd(:); ytemp(:)=yd(:) |
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| 46 | ALLOCATE(champf(lons,lats)) |
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| 47 | pi = 2. * ASIN(1.) |
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| 48 | pis2 = pi/2. |
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| 49 | depi = 2. * pi |
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| 50 | radlon=.FALSE.; invlon=.FALSE. |
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| 51 | IF (xtemp(1)>=-pi-0.5.AND.xtemp(lons)<= pi+0.5) THEN |
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| 52 | radlon = .TRUE.; invlon = .FALSE. |
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| 53 | ELSE IF(xtemp(1)>= -0.5.AND.xtemp(lons)<=depi+0.5) THEN |
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| 54 | radlon = .TRUE.; invlon = .TRUE. |
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| 55 | ELSE IF(xtemp(1)>= -180.5.AND.xtemp(lons)<= 180.5) THEN |
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| 56 | radlon = .FALSE.; invlon = .FALSE. |
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| 57 | ELSE IF(xtemp(1)>= -0.5.AND.xtemp(lons)<= 360.5) THEN |
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| 58 | radlon = .FALSE.; invlon = .TRUE. |
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| 59 | ELSE; WRITE(6,*) 'Problems with data longitudes for file '//TRIM(title) |
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| 60 | END IF |
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| 61 | invlat = ytemp(1)<ytemp(lats) |
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| 62 | rlatmin = MIN( ytemp(1), ytemp(lats) ) |
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| 63 | rlatmax = MAX( ytemp(1), ytemp(lats) ) |
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| 64 | |
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| 65 | IF (rlatmin>=-pis2-0.5.AND.rlatmax<=pis2+0.5) THEN; radlat = .TRUE. |
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| 66 | ELSE IF(rlatmin>= -90.-0.5.AND.rlatmax<= 90.+0.5) THEN; radlat = .FALSE. |
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| 67 | ELSE; WRITE(6,*) 'Problems with data latitudes for file '//TRIM(title) |
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| 68 | END IF |
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| 69 | |
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| 70 | IF(.NOT.radlon) xtemp(:)=xtemp(:)*pi/180. |
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| 71 | IF(.NOT.radlat) ytemp(:)=ytemp(:)*pi/180. |
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| 72 | |
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| 73 | !--- FLIPPED LONGITUDES |
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| 74 | IF(invlon) THEN |
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| 75 | champf(:,:)=champd(:,:); xf(:)=xtemp(:) |
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| 76 | |
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| 77 | !--- Longitudes rotated to get them in [ -pi pi] interval. |
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| 78 | DO i=1,lons; IF(xf(i)>pi) EXIT; END DO; ip180 = i |
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| 79 | DO i=1,lons; IF(xf(i)>pi) xf(i)=xf(i)-depi; END DO |
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| 80 | DO i= ip180,lons; ind=i-ip180+1; xtemp(ind)=xf(i); END DO |
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| 81 | DO i= ind+1,lons; xtemp(i )=xf(i-ind); END DO |
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| 82 | |
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| 83 | !--- Longitudes rotated in champf |
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| 84 | DO j=1,lats |
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| 85 | DO i=ip180,lons; ind=i-ip180+1; champd(ind,j)=champf(i ,j); END DO |
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| 86 | DO i=ind+1,lons; champd(i ,j)=champf(i-ind,j); END DO |
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| 87 | END DO |
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| 88 | END IF |
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| 89 | |
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| 90 | !--- FLIPPED LATITUDES |
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| 91 | IF(invlat) THEN |
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| 92 | yf(:)=ytemp(:) |
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| 93 | champf(:,:)=champd(:,:) |
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| 94 | ytemp(lats:1:-1)=yf(:) |
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| 95 | DO j=1,lats; champd(:,lats-j+1)=champf(:,j); END DO |
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| 96 | END IF |
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| 97 | |
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| 98 | !--- FOR BARYCENTRIC INTERPOLATION |
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| 99 | IF(interbar) THEN |
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| 100 | oldxd1 = xtemp(1) |
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| 101 | xtemp(1:lons-1)=0.5*(xtemp(1:lons-1)+xtemp(2:lons)) |
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| 102 | xtemp( lons )=0.5*(xtemp( lons )+oldxd1+depi) |
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| 103 | ytemp(1:lats-1)=0.5*(ytemp(1:lats-1)+ytemp(2:lats)) |
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| 104 | END IF |
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| 105 | DEALLOCATE(champf) |
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| 106 | xf(:)=xtemp(:); DEALLOCATE(xtemp) |
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| 107 | yf(:)=ytemp(:); DEALLOCATE(ytemp) |
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| 108 | |
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| 109 | END SUBROUTINE conf_dat2d |
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| 110 | ! |
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| 111 | !------------------------------------------------------------------------------- |
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| 112 | |
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| 113 | |
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| 114 | !------------------------------------------------------------------------------- |
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| 115 | ! |
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| 116 | SUBROUTINE conf_dat3d(title, xd, yd, zd, xf, yf, zf, champd, interbar) |
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| 117 | ! |
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| 118 | !------------------------------------------------------------------------------- |
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| 119 | ! Author: P. Le Van |
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| 120 | !------------------------------------------------------------------------------- |
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| 121 | ! Purpose: Configure the 3D data field "champd" so that: |
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| 122 | ! - Longitudes are in [ -pi pi ] |
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| 123 | ! - Latitudes are in [ pi/2. -pi/2 ] |
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| 124 | ! - Vertical levels from ground to model top (in Pascals) |
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| 125 | ! * xd / yd are initial lon / lats. |
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| 126 | ! * xf / yf are output lon / lats, possibly modified to satisfy configuration. |
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| 127 | ! * zf are output pressures |
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| 128 | ! * interbar is TRUE for barycentric interpolation. |
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| 129 | !------------------------------------------------------------------------------- |
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| 130 | USE assert_eq_m, ONLY: assert_eq |
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| 131 | IMPLICIT NONE |
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| 132 | !------------------------------------------------------------------------------- |
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| 133 | ! Arguments: |
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| 134 | CHARACTER(LEN=*), INTENT(IN) :: title |
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| 135 | REAL, INTENT(IN) :: xd(:), yd(:), zd(:) ! (lons) (lats) (levs) |
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| 136 | REAL, INTENT(INOUT) :: xf(:), yf(:), zf(:) ! (lons) (lats) (levs) |
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| 137 | REAL, INTENT(INOUT) :: champd(:,:,:) ! (lons,lats,levs) |
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| 138 | LOGICAL, INTENT(IN) :: interbar |
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| 139 | !------------------------------------------------------------------------------- |
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| 140 | ! Local variables: |
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| 141 | CHARACTER(LEN=256) :: modname="conf_dat3d" |
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| 142 | INTEGER :: i, j, l, ip180, ind, lons, lats, levs |
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| 143 | LOGICAL :: radlon, invlon ,radlat, invlat, invlev |
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| 144 | REAL :: pi, pis2, depi, presmax, rlatmin, rlatmax, oldxd1 |
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| 145 | REAL, ALLOCATABLE :: xtemp(:) , ytemp(:), ztemp(:), champf(:,:,:) |
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| 146 | !------------------------------------------------------------------------------- |
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| 147 | lons=assert_eq(SIZE(xd),SIZE(xf),SIZE(champd,1),TRIM(modname)//" lons") |
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| 148 | lats=assert_eq(SIZE(yd),SIZE(yf),SIZE(champd,2),TRIM(modname)//" lats") |
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| 149 | levs=assert_eq(SIZE(zd),SIZE(zf),SIZE(champd,3),TRIM(modname)//" levs") |
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| 150 | ALLOCATE(xtemp(lons),ytemp(lats),ztemp(levs),champf(lons,lats,levs)) |
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| 151 | xtemp(:)=xd(:); ytemp(:)=yd(:); ztemp(:)=zd(:) |
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| 152 | pi = 2. * ASIN(1.) |
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| 153 | pis2 = pi/2. |
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| 154 | depi = 2. * pi |
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| 155 | radlon=.FALSE.; invlon=.FALSE. |
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| 156 | IF (xtemp(1)>=-pi-0.5.AND.xtemp(lons)<= pi+0.5) THEN |
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| 157 | radlon = .TRUE.; invlon = .FALSE. |
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| 158 | ELSE IF(xtemp(1)>= -0.5.AND.xtemp(lons)<=depi+0.5) THEN |
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| 159 | radlon = .TRUE.; invlon = .TRUE. |
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| 160 | ELSE IF(xtemp(1)>= -180.5.AND.xtemp(lons)<= 180.5) THEN |
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| 161 | radlon = .FALSE.; invlon = .FALSE. |
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| 162 | ELSE IF(xtemp(1)>= -0.5.AND.xtemp(lons)<= 360.5) THEN |
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| 163 | radlon = .FALSE.; invlon = .TRUE. |
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| 164 | ELSE; WRITE(6,*) 'Problems with data longitudes for file '//TRIM(title) |
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| 165 | END IF |
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| 166 | invlat = ytemp(1)<ytemp(lats) |
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| 167 | rlatmin = MIN( ytemp(1), ytemp(lats) ) |
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| 168 | rlatmax = MAX( ytemp(1), ytemp(lats) ) |
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| 169 | |
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| 170 | IF (rlatmin>=-pis2-0.5.AND.rlatmax<=pis2+0.5) THEN; radlat = .TRUE. |
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| 171 | ELSE IF(rlatmin>= -90.-0.5.AND.rlatmax<= 90.+0.5) THEN; radlat = .FALSE. |
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| 172 | ELSE; WRITE(6,*) 'Problems with data latitudes for file '//TRIM(title) |
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| 173 | END IF |
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| 174 | |
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| 175 | IF(.NOT.radlon) xtemp(:)=xtemp(:)*pi/180. |
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| 176 | IF(.NOT.radlat) ytemp(:)=ytemp(:)*pi/180. |
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| 177 | |
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| 178 | !--- FLIPPED LONGITUDES |
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| 179 | IF(invlon) THEN |
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| 180 | champf(:,:,:)=champd(:,:,:); xf(:)=xtemp(:) |
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| 181 | |
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| 182 | !--- Longitudes rotated to get them in [ -pi pi] interval. |
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| 183 | DO i=1,lons; IF(xf(i)>pi) EXIT; END DO; ip180 = i |
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| 184 | DO i=1,lons; IF(xf(i)>pi) xf(i)=xf(i)-depi; END DO |
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| 185 | DO i= ip180,lons; ind=i-ip180+1; xtemp(ind)=xf(i); END DO |
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| 186 | DO i= ind+1,lons; xtemp(i )=xf(i-ind); END DO |
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| 187 | |
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| 188 | !--- Longitudes rotated in champf |
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| 189 | DO l=1,levs |
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| 190 | DO j=1,lats |
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| 191 | DO i=ip180,lons; ind=i-ip180+1; champd(ind,j,l)=champf(i ,j,l); END DO |
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| 192 | DO i=ind+1,lons; champd(i ,j,l)=champf(i-ind,j,l); END DO |
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| 193 | END DO |
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| 194 | END DO |
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| 195 | END IF |
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| 196 | |
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| 197 | !--- FLIPPED LATITUDES |
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| 198 | IF(invlat) THEN |
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| 199 | yf(:)=ytemp(:) |
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| 200 | champf(:,:,:)=champd(:,:,:) |
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| 201 | ytemp(lats:1:-1)=yf(:) |
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| 202 | DO l=1,levs |
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| 203 | DO j=1,lats; champd(:,lats-j+1,l)=champf(:,j,l); END DO |
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| 204 | END DO |
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| 205 | END IF |
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| 206 | |
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| 207 | !--- FOR BARYCENTRIC INTERPOLATION |
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| 208 | IF(interbar) THEN |
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| 209 | oldxd1 = xtemp(1) |
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| 210 | xtemp(1:lons-1)=0.5*(xtemp(1:lons-1)+xtemp(2:lons)) |
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| 211 | xtemp( lons )=0.5*(xtemp( lons )+oldxd1+depi) |
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| 212 | ytemp(1:lats-1)=0.5*(ytemp(1:lats-1)+ytemp(2:lats)) |
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| 213 | END IF |
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| 214 | |
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| 215 | !--- FLIPPED LEVELS |
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| 216 | invlev=ztemp(1)<ztemp(levs) |
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| 217 | IF(MAX(ztemp(1),ztemp(levs))<1200.) ztemp(:)=ztemp(:)*100. |
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| 218 | IF(invlev) THEN |
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| 219 | zf(:)=ztemp(:) |
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| 220 | champf(:,:,:)=champd(:,:,:) |
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| 221 | ztemp(levs:1:-1)=zf(:) |
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| 222 | DO l=1,levs; champd(:,:,levs+1-l)=champf(:,:,l); END DO |
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| 223 | END IF |
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| 224 | |
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| 225 | DEALLOCATE(champf) |
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| 226 | xf(:)=xtemp(:); DEALLOCATE(xtemp) |
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| 227 | yf(:)=ytemp(:); DEALLOCATE(ytemp) |
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| 228 | zf(:)=ztemp(:); DEALLOCATE(ztemp) |
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| 229 | |
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| 230 | END SUBROUTINE conf_dat3d |
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| 231 | ! |
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| 232 | !------------------------------------------------------------------------------- |
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| 233 | |
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| 234 | END MODULE conf_dat_m |
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| 235 | |
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