| 1 | subroutine verttransform_gfs(n,uuh,vvh,wwh,pvh) |
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| 2 | ! i i i i i |
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| 3 | !***************************************************************************** |
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| 4 | ! * |
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| 5 | ! This subroutine transforms temperature, dew point temperature and * |
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| 6 | ! wind components from eta to meter coordinates. * |
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| 7 | ! The vertical wind component is transformed from Pa/s to m/s using * |
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| 8 | ! the conversion factor pinmconv. * |
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| 9 | ! In addition, this routine calculates vertical density gradients * |
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| 10 | ! needed for the parameterization of the turbulent velocities. * |
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| 11 | ! * |
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| 12 | ! Author: A. Stohl, G. Wotawa * |
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| 13 | ! * |
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| 14 | ! 12 August 1996 * |
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| 15 | ! Update: 16 January 1998 * |
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| 16 | ! * |
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| 17 | ! Major update: 17 February 1999 * |
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| 18 | ! by G. Wotawa * |
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| 19 | ! CHANGE 17/11/2005 Caroline Forster, NCEP GFS version * |
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| 20 | ! * |
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| 21 | ! - Vertical levels for u, v and w are put together * |
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| 22 | ! - Slope correction for vertical velocity: Modification of calculation * |
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| 23 | ! procedure * |
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| 24 | ! * |
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| 25 | !***************************************************************************** |
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| 26 | ! Changes, Bernd C. Krueger, Feb. 2001: |
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| 27 | ! Variables tth and qvh (on eta coordinates) from common block |
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| 28 | ! |
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| 29 | ! Unified ECMWF and GFS builds |
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| 30 | ! Marian Harustak, 12.5.2017 |
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| 31 | ! - Renamed routine from verttransform to verttransform_gfs |
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| 32 | ! |
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| 33 | !***************************************************************************** |
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| 34 | ! * |
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| 35 | ! Variables: * |
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| 36 | ! nx,ny,nz field dimensions in x,y and z direction * |
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| 37 | ! uu(0:nxmax,0:nymax,nzmax,2) wind components in x-direction [m/s] * |
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| 38 | ! vv(0:nxmax,0:nymax,nzmax,2) wind components in y-direction [m/s] * |
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| 39 | ! ww(0:nxmax,0:nymax,nzmax,2) wind components in z-direction [deltaeta/s]* |
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| 40 | ! tt(0:nxmax,0:nymax,nzmax,2) temperature [K] * |
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| 41 | ! pv(0:nxmax,0:nymax,nzmax,2) potential voriticity (pvu) * |
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| 42 | ! ps(0:nxmax,0:nymax,2) surface pressure [Pa] * |
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| 43 | ! clouds(0:nxmax,0:nymax,0:nzmax,2) cloud field for wet deposition * |
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| 44 | ! * |
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| 45 | !***************************************************************************** |
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| 46 | |
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| 47 | use par_mod |
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| 48 | use com_mod |
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| 49 | use cmapf_mod |
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| 50 | |
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| 51 | implicit none |
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| 52 | |
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| 53 | integer :: ix,jy,kz,iz,n,kmin,kl,klp,ix1,jy1,ixp,jyp,ixm,jym |
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| 54 | integer :: rain_cloud_above,kz_inv |
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| 55 | real :: f_qvsat,pressure |
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| 56 | real :: rh,lsp,cloudh_min,convp,prec |
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| 57 | real :: rhoh(nuvzmax),pinmconv(nzmax) |
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| 58 | real :: ew,pint,tv,tvold,pold,dz1,dz2,dz,ui,vi |
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| 59 | real :: xlon,ylat,xlonr,dzdx,dzdy |
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| 60 | real :: dzdx1,dzdx2,dzdy1,dzdy2,cosf |
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| 61 | real :: uuaux,vvaux,uupolaux,vvpolaux,ddpol,ffpol,wdummy |
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| 62 | real :: uuh(0:nxmax-1,0:nymax-1,nuvzmax) |
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| 63 | real :: vvh(0:nxmax-1,0:nymax-1,nuvzmax) |
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| 64 | real :: pvh(0:nxmax-1,0:nymax-1,nuvzmax) |
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| 65 | real :: wwh(0:nxmax-1,0:nymax-1,nwzmax) |
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| 66 | real :: wzlev(nwzmax),uvwzlev(0:nxmax-1,0:nymax-1,nzmax) |
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| 67 | real,parameter :: const=r_air/ga |
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| 68 | |
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| 69 | ! NCEP version |
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| 70 | integer :: llev, i |
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| 71 | |
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| 72 | logical :: init = .true. |
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| 73 | |
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| 74 | |
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| 75 | !************************************************************************* |
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| 76 | ! If verttransform is called the first time, initialize heights of the * |
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| 77 | ! z levels in meter. The heights are the heights of model levels, where * |
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| 78 | ! u,v,T and qv are given. * |
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| 79 | !************************************************************************* |
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| 80 | |
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| 81 | if (init) then |
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| 82 | |
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| 83 | ! Search for a point with high surface pressure (i.e. not above significant topography) |
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| 84 | ! Then, use this point to construct a reference z profile, to be used at all times |
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| 85 | !***************************************************************************** |
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| 86 | |
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| 87 | do jy=0,nymin1 |
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| 88 | do ix=0,nxmin1 |
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| 89 | if (ps(ix,jy,1,n).gt.100000.) then |
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| 90 | ixm=ix |
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| 91 | jym=jy |
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| 92 | goto 3 |
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| 93 | endif |
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| 94 | end do |
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| 95 | end do |
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| 96 | 3 continue |
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| 97 | |
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| 98 | |
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| 99 | tvold=tt2(ixm,jym,1,n)*(1.+0.378*ew(td2(ixm,jym,1,n))/ & |
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| 100 | ps(ixm,jym,1,n)) |
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| 101 | pold=ps(ixm,jym,1,n) |
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| 102 | height(1)=0. |
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| 103 | |
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| 104 | do kz=2,nuvz |
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| 105 | pint=akz(kz)+bkz(kz)*ps(ixm,jym,1,n) |
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| 106 | tv=tth(ixm,jym,kz,n)*(1.+0.608*qvh(ixm,jym,kz,n)) |
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| 107 | |
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| 108 | if (abs(tv-tvold).gt.0.2) then |
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| 109 | height(kz)=height(kz-1)+const*log(pold/pint)* & |
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| 110 | (tv-tvold)/log(tv/tvold) |
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| 111 | else |
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| 112 | height(kz)=height(kz-1)+const*log(pold/pint)*tv |
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| 113 | endif |
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| 114 | |
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| 115 | tvold=tv |
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| 116 | pold=pint |
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| 117 | end do |
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| 118 | |
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| 119 | |
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| 120 | ! Determine highest levels that can be within PBL |
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| 121 | !************************************************ |
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| 122 | |
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| 123 | do kz=1,nz |
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| 124 | if (height(kz).gt.hmixmax) then |
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| 125 | nmixz=kz |
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| 126 | goto 9 |
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| 127 | endif |
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| 128 | end do |
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| 129 | 9 continue |
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| 130 | |
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| 131 | ! Do not repeat initialization of the Cartesian z grid |
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| 132 | !***************************************************** |
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| 133 | |
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| 134 | init=.false. |
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| 135 | |
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| 136 | endif |
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| 137 | |
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| 138 | |
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| 139 | ! Loop over the whole grid |
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| 140 | !************************* |
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| 141 | |
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| 142 | do jy=0,nymin1 |
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| 143 | do ix=0,nxmin1 |
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| 144 | |
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| 145 | ! NCEP version: find first level above ground |
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| 146 | llev = 0 |
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| 147 | do i=1,nuvz |
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| 148 | if (ps(ix,jy,1,n).lt.akz(i)) llev=i |
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| 149 | end do |
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| 150 | llev = llev+1 |
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| 151 | if (llev.gt.nuvz-2) llev = nuvz-2 |
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| 152 | ! if (llev.eq.nuvz-2) write(*,*) 'verttransform |
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| 153 | ! +WARNING: LLEV eq NUZV-2' |
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| 154 | ! NCEP version |
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| 155 | |
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| 156 | |
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| 157 | ! compute height of pressure levels above ground |
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| 158 | !*********************************************** |
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| 159 | |
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| 160 | tvold=tth(ix,jy,llev,n)*(1.+0.608*qvh(ix,jy,llev,n)) |
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| 161 | pold=akz(llev) |
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| 162 | wzlev(llev)=0. |
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| 163 | uvwzlev(ix,jy,llev)=0. |
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| 164 | rhoh(llev)=pold/(r_air*tvold) |
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| 165 | |
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| 166 | do kz=llev+1,nuvz |
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| 167 | pint=akz(kz)+bkz(kz)*ps(ix,jy,1,n) |
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| 168 | tv=tth(ix,jy,kz,n)*(1.+0.608*qvh(ix,jy,kz,n)) |
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| 169 | rhoh(kz)=pint/(r_air*tv) |
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| 170 | |
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| 171 | if (abs(tv-tvold).gt.0.2) then |
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| 172 | uvwzlev(ix,jy,kz)=uvwzlev(ix,jy,kz-1)+const*log(pold/pint)* & |
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| 173 | (tv-tvold)/log(tv/tvold) |
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| 174 | else |
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| 175 | uvwzlev(ix,jy,kz)=uvwzlev(ix,jy,kz-1)+const*log(pold/pint)*tv |
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| 176 | endif |
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| 177 | wzlev(kz)=uvwzlev(ix,jy,kz) |
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| 178 | |
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| 179 | tvold=tv |
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| 180 | pold=pint |
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| 181 | end do |
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| 182 | |
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| 183 | ! pinmconv=(h2-h1)/(p2-p1) |
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| 184 | |
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| 185 | pinmconv(llev)=(uvwzlev(ix,jy,llev+1)-uvwzlev(ix,jy,llev))/ & |
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| 186 | ((aknew(llev+1)+bknew(llev+1)*ps(ix,jy,1,n))- & |
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| 187 | (aknew(llev)+bknew(llev)*ps(ix,jy,1,n))) |
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| 188 | do kz=llev+1,nz-1 |
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| 189 | pinmconv(kz)=(uvwzlev(ix,jy,kz+1)-uvwzlev(ix,jy,kz-1))/ & |
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| 190 | ((aknew(kz+1)+bknew(kz+1)*ps(ix,jy,1,n))- & |
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| 191 | (aknew(kz-1)+bknew(kz-1)*ps(ix,jy,1,n))) |
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| 192 | end do |
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| 193 | pinmconv(nz)=(uvwzlev(ix,jy,nz)-uvwzlev(ix,jy,nz-1))/ & |
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| 194 | ((aknew(nz)+bknew(nz)*ps(ix,jy,1,n))- & |
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| 195 | (aknew(nz-1)+bknew(nz-1)*ps(ix,jy,1,n))) |
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| 196 | |
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| 197 | |
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| 198 | ! Levels, where u,v,t and q are given |
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| 199 | !************************************ |
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| 200 | |
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| 201 | uu(ix,jy,1,n)=uuh(ix,jy,llev) |
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| 202 | vv(ix,jy,1,n)=vvh(ix,jy,llev) |
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| 203 | tt(ix,jy,1,n)=tth(ix,jy,llev,n) |
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| 204 | qv(ix,jy,1,n)=qvh(ix,jy,llev,n) |
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| 205 | ! IP & SEC, 201812 add clouds |
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| 206 | if (readclouds) then |
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| 207 | clwc(ix,jy,1,n)=clwch(ix,jy,llev,n) |
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| 208 | endif |
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| 209 | pv(ix,jy,1,n)=pvh(ix,jy,llev) |
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| 210 | rho(ix,jy,1,n)=rhoh(llev) |
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| 211 | pplev(ix,jy,1,n)=akz(llev) |
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| 212 | uu(ix,jy,nz,n)=uuh(ix,jy,nuvz) |
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| 213 | vv(ix,jy,nz,n)=vvh(ix,jy,nuvz) |
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| 214 | tt(ix,jy,nz,n)=tth(ix,jy,nuvz,n) |
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| 215 | qv(ix,jy,nz,n)=qvh(ix,jy,nuvz,n) |
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| 216 | ! IP & SEC, 201812 add clouds |
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| 217 | if (readclouds) then |
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| 218 | clwc(ix,jy,nz,n)=clwch(ix,jy,nuvz,n) |
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| 219 | endif |
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| 220 | pv(ix,jy,nz,n)=pvh(ix,jy,nuvz) |
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| 221 | rho(ix,jy,nz,n)=rhoh(nuvz) |
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| 222 | pplev(ix,jy,nz,n)=akz(nuvz) |
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| 223 | kmin=llev+1 |
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| 224 | do iz=2,nz-1 |
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| 225 | do kz=kmin,nuvz |
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| 226 | if(height(iz).gt.uvwzlev(ix,jy,nuvz)) then |
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| 227 | uu(ix,jy,iz,n)=uu(ix,jy,nz,n) |
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| 228 | vv(ix,jy,iz,n)=vv(ix,jy,nz,n) |
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| 229 | tt(ix,jy,iz,n)=tt(ix,jy,nz,n) |
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| 230 | qv(ix,jy,iz,n)=qv(ix,jy,nz,n) |
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| 231 | ! IP & SEC, 201812 add clouds |
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| 232 | if (readclouds) then |
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| 233 | clwc(ix,jy,iz,n)=clwc(ix,jy,nz,n) |
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| 234 | endif |
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| 235 | pv(ix,jy,iz,n)=pv(ix,jy,nz,n) |
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| 236 | rho(ix,jy,iz,n)=rho(ix,jy,nz,n) |
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| 237 | pplev(ix,jy,iz,n)=pplev(ix,jy,nz,n) |
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| 238 | goto 30 |
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| 239 | endif |
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| 240 | if ((height(iz).gt.uvwzlev(ix,jy,kz-1)).and. & |
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| 241 | (height(iz).le.uvwzlev(ix,jy,kz))) then |
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| 242 | dz1=height(iz)-uvwzlev(ix,jy,kz-1) |
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| 243 | dz2=uvwzlev(ix,jy,kz)-height(iz) |
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| 244 | dz=dz1+dz2 |
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| 245 | uu(ix,jy,iz,n)=(uuh(ix,jy,kz-1)*dz2+uuh(ix,jy,kz)*dz1)/dz |
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| 246 | vv(ix,jy,iz,n)=(vvh(ix,jy,kz-1)*dz2+vvh(ix,jy,kz)*dz1)/dz |
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| 247 | tt(ix,jy,iz,n)=(tth(ix,jy,kz-1,n)*dz2 & |
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| 248 | +tth(ix,jy,kz,n)*dz1)/dz |
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| 249 | qv(ix,jy,iz,n)=(qvh(ix,jy,kz-1,n)*dz2 & |
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| 250 | +qvh(ix,jy,kz,n)*dz1)/dz |
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| 251 | ! IP & SEC, 201812 add clouds |
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| 252 | if (readclouds) then |
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| 253 | clwc(ix,jy,iz,n)=(clwch(ix,jy,kz-1,n)*dz2 & |
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| 254 | +clwch(ix,jy,kz,n)*dz1)/dz |
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| 255 | endif |
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| 256 | pv(ix,jy,iz,n)=(pvh(ix,jy,kz-1)*dz2+pvh(ix,jy,kz)*dz1)/dz |
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| 257 | rho(ix,jy,iz,n)=(rhoh(kz-1)*dz2+rhoh(kz)*dz1)/dz |
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| 258 | pplev(ix,jy,iz,n)=(akz(kz-1)*dz2+akz(kz)*dz1)/dz |
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| 259 | endif |
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| 260 | end do |
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| 261 | 30 continue |
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| 262 | end do |
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| 263 | |
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| 264 | |
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| 265 | ! Levels, where w is given |
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| 266 | !************************* |
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| 267 | |
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| 268 | ww(ix,jy,1,n)=wwh(ix,jy,llev)*pinmconv(llev) |
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| 269 | ww(ix,jy,nz,n)=wwh(ix,jy,nwz)*pinmconv(nz) |
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| 270 | kmin=llev+1 |
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| 271 | do iz=2,nz |
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| 272 | do kz=kmin,nwz |
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| 273 | if ((height(iz).gt.wzlev(kz-1)).and. & |
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| 274 | (height(iz).le.wzlev(kz))) then |
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| 275 | dz1=height(iz)-wzlev(kz-1) |
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| 276 | dz2=wzlev(kz)-height(iz) |
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| 277 | dz=dz1+dz2 |
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| 278 | ww(ix,jy,iz,n)=(wwh(ix,jy,kz-1)*pinmconv(kz-1)*dz2 & |
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| 279 | +wwh(ix,jy,kz)*pinmconv(kz)*dz1)/dz |
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| 280 | endif |
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| 281 | end do |
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| 282 | end do |
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| 283 | |
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| 284 | |
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| 285 | ! Compute density gradients at intermediate levels |
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| 286 | !************************************************* |
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| 287 | |
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| 288 | drhodz(ix,jy,1,n)=(rho(ix,jy,2,n)-rho(ix,jy,1,n))/ & |
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| 289 | (height(2)-height(1)) |
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| 290 | do kz=2,nz-1 |
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| 291 | drhodz(ix,jy,kz,n)=(rho(ix,jy,kz+1,n)-rho(ix,jy,kz-1,n))/ & |
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| 292 | (height(kz+1)-height(kz-1)) |
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| 293 | end do |
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| 294 | drhodz(ix,jy,nz,n)=drhodz(ix,jy,nz-1,n) |
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| 295 | |
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| 296 | end do |
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| 297 | end do |
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| 298 | |
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| 299 | |
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| 300 | !**************************************************************** |
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| 301 | ! Compute slope of eta levels in windward direction and resulting |
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| 302 | ! vertical wind correction |
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| 303 | !**************************************************************** |
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| 304 | |
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| 305 | do jy=1,ny-2 |
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| 306 | cosf=cos((real(jy)*dy+ylat0)*pi180) |
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| 307 | do ix=1,nx-2 |
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| 308 | |
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| 309 | ! NCEP version: find first level above ground |
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| 310 | llev = 0 |
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| 311 | do i=1,nuvz |
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| 312 | if (ps(ix,jy,1,n).lt.akz(i)) llev=i |
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| 313 | end do |
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| 314 | llev = llev+1 |
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| 315 | if (llev.gt.nuvz-2) llev = nuvz-2 |
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| 316 | ! if (llev.eq.nuvz-2) write(*,*) 'verttransform |
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| 317 | ! +WARNING: LLEV eq NUZV-2' |
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| 318 | ! NCEP version |
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| 319 | |
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| 320 | kmin=llev+1 |
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| 321 | do iz=2,nz-1 |
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| 322 | |
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| 323 | ui=uu(ix,jy,iz,n)*dxconst/cosf |
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| 324 | vi=vv(ix,jy,iz,n)*dyconst |
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| 325 | |
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| 326 | do kz=kmin,nz |
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| 327 | if ((height(iz).gt.uvwzlev(ix,jy,kz-1)).and. & |
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| 328 | (height(iz).le.uvwzlev(ix,jy,kz))) then |
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| 329 | dz1=height(iz)-uvwzlev(ix,jy,kz-1) |
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| 330 | dz2=uvwzlev(ix,jy,kz)-height(iz) |
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| 331 | dz=dz1+dz2 |
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| 332 | kl=kz-1 |
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| 333 | klp=kz |
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| 334 | goto 47 |
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| 335 | endif |
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| 336 | end do |
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| 337 | |
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| 338 | 47 ix1=ix-1 |
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| 339 | jy1=jy-1 |
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| 340 | ixp=ix+1 |
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| 341 | jyp=jy+1 |
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| 342 | |
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| 343 | dzdx1=(uvwzlev(ixp,jy,kl)-uvwzlev(ix1,jy,kl))/2. |
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| 344 | dzdx2=(uvwzlev(ixp,jy,klp)-uvwzlev(ix1,jy,klp))/2. |
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| 345 | dzdx=(dzdx1*dz2+dzdx2*dz1)/dz |
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| 346 | |
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| 347 | dzdy1=(uvwzlev(ix,jyp,kl)-uvwzlev(ix,jy1,kl))/2. |
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| 348 | dzdy2=(uvwzlev(ix,jyp,klp)-uvwzlev(ix,jy1,klp))/2. |
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| 349 | dzdy=(dzdy1*dz2+dzdy2*dz1)/dz |
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| 350 | |
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| 351 | ww(ix,jy,iz,n)=ww(ix,jy,iz,n)+(dzdx*ui+dzdy*vi) |
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| 352 | |
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| 353 | end do |
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| 354 | |
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| 355 | end do |
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| 356 | end do |
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| 357 | |
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| 358 | |
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| 359 | ! If north pole is in the domain, calculate wind velocities in polar |
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| 360 | ! stereographic coordinates |
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| 361 | !******************************************************************* |
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| 362 | |
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| 363 | if (nglobal) then |
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| 364 | do jy=int(switchnorthg)-2,nymin1 |
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| 365 | ylat=ylat0+real(jy)*dy |
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| 366 | do ix=0,nxmin1 |
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| 367 | xlon=xlon0+real(ix)*dx |
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| 368 | do iz=1,nz |
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| 369 | call cc2gll(northpolemap,ylat,xlon,uu(ix,jy,iz,n), & |
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| 370 | vv(ix,jy,iz,n),uupol(ix,jy,iz,n), & |
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| 371 | vvpol(ix,jy,iz,n)) |
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| 372 | end do |
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| 373 | end do |
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| 374 | end do |
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| 375 | |
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| 376 | |
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| 377 | do iz=1,nz |
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| 378 | |
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| 379 | ! CALCULATE FFPOL, DDPOL FOR CENTRAL GRID POINT |
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| 380 | xlon=xlon0+real(nx/2-1)*dx |
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| 381 | xlonr=xlon*pi/180. |
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| 382 | ffpol=sqrt(uu(nx/2-1,nymin1,iz,n)**2+vv(nx/2-1,nymin1,iz,n)**2) |
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| 383 | if (vv(nx/2-1,nymin1,iz,n).lt.0.) then |
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| 384 | ddpol=atan(uu(nx/2-1,nymin1,iz,n)/vv(nx/2-1,nymin1,iz,n))-xlonr |
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| 385 | elseif (vv(nx/2-1,nymin1,iz,n).gt.0.) then |
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| 386 | ddpol=pi+atan(uu(nx/2-1,nymin1,iz,n)/ & |
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| 387 | vv(nx/2-1,nymin1,iz,n))-xlonr |
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| 388 | else |
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| 389 | ddpol=pi/2-xlonr |
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| 390 | endif |
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| 391 | if(ddpol.lt.0.) ddpol=2.0*pi+ddpol |
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| 392 | if(ddpol.gt.2.0*pi) ddpol=ddpol-2.0*pi |
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| 393 | |
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| 394 | ! CALCULATE U,V FOR 180 DEG, TRANSFORM TO POLAR STEREOGRAPHIC GRID |
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| 395 | xlon=180.0 |
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| 396 | xlonr=xlon*pi/180. |
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| 397 | ylat=90.0 |
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| 398 | uuaux=-ffpol*sin(xlonr+ddpol) |
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| 399 | vvaux=-ffpol*cos(xlonr+ddpol) |
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| 400 | call cc2gll(northpolemap,ylat,xlon,uuaux,vvaux,uupolaux,vvpolaux) |
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| 401 | jy=nymin1 |
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| 402 | do ix=0,nxmin1 |
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| 403 | uupol(ix,jy,iz,n)=uupolaux |
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| 404 | vvpol(ix,jy,iz,n)=vvpolaux |
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| 405 | end do |
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| 406 | end do |
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| 407 | |
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| 408 | |
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| 409 | ! Fix: Set W at pole to the zonally averaged W of the next equator- |
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| 410 | ! ward parallel of latitude |
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| 411 | |
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| 412 | do iz=1,nz |
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| 413 | wdummy=0. |
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| 414 | jy=ny-2 |
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| 415 | do ix=0,nxmin1 |
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| 416 | wdummy=wdummy+ww(ix,jy,iz,n) |
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| 417 | end do |
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| 418 | wdummy=wdummy/real(nx) |
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| 419 | jy=nymin1 |
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| 420 | do ix=0,nxmin1 |
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| 421 | ww(ix,jy,iz,n)=wdummy |
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| 422 | end do |
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| 423 | end do |
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| 424 | |
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| 425 | endif |
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| 426 | |
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| 427 | |
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| 428 | ! If south pole is in the domain, calculate wind velocities in polar |
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| 429 | ! stereographic coordinates |
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| 430 | !******************************************************************* |
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| 431 | |
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| 432 | if (sglobal) then |
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| 433 | do jy=0,int(switchsouthg)+3 |
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| 434 | ylat=ylat0+real(jy)*dy |
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| 435 | do ix=0,nxmin1 |
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| 436 | xlon=xlon0+real(ix)*dx |
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| 437 | do iz=1,nz |
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| 438 | call cc2gll(southpolemap,ylat,xlon,uu(ix,jy,iz,n), & |
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| 439 | vv(ix,jy,iz,n),uupol(ix,jy,iz,n),vvpol(ix,jy,iz,n)) |
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| 440 | end do |
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| 441 | end do |
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| 442 | end do |
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| 443 | |
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| 444 | do iz=1,nz |
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| 445 | |
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| 446 | ! CALCULATE FFPOL, DDPOL FOR CENTRAL GRID POINT |
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| 447 | xlon=xlon0+real(nx/2-1)*dx |
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| 448 | xlonr=xlon*pi/180. |
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| 449 | ffpol=sqrt(uu(nx/2-1,0,iz,n)**2+vv(nx/2-1,0,iz,n)**2) |
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| 450 | if(vv(nx/2-1,0,iz,n).lt.0.) then |
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| 451 | ddpol=atan(uu(nx/2-1,0,iz,n)/vv(nx/2-1,0,iz,n))+xlonr |
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| 452 | elseif (vv(nx/2-1,0,iz,n).gt.0.) then |
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| 453 | ddpol=pi+atan(uu(nx/2-1,0,iz,n)/vv(nx/2-1,0,iz,n))-xlonr |
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| 454 | else |
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| 455 | ddpol=pi/2-xlonr |
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| 456 | endif |
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| 457 | if(ddpol.lt.0.) ddpol=2.0*pi+ddpol |
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| 458 | if(ddpol.gt.2.0*pi) ddpol=ddpol-2.0*pi |
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| 459 | |
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| 460 | ! CALCULATE U,V FOR 180 DEG, TRANSFORM TO POLAR STEREOGRAPHIC GRID |
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| 461 | xlon=180.0 |
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| 462 | xlonr=xlon*pi/180. |
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| 463 | ylat=-90.0 |
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| 464 | uuaux=+ffpol*sin(xlonr-ddpol) |
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| 465 | vvaux=-ffpol*cos(xlonr-ddpol) |
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| 466 | call cc2gll(northpolemap,ylat,xlon,uuaux,vvaux,uupolaux,vvpolaux) |
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| 467 | |
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| 468 | jy=0 |
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| 469 | do ix=0,nxmin1 |
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| 470 | uupol(ix,jy,iz,n)=uupolaux |
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| 471 | vvpol(ix,jy,iz,n)=vvpolaux |
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| 472 | end do |
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| 473 | end do |
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| 474 | |
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| 475 | |
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| 476 | ! Fix: Set W at pole to the zonally averaged W of the next equator- |
|---|
| 477 | ! ward parallel of latitude |
|---|
| 478 | |
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| 479 | do iz=1,nz |
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| 480 | wdummy=0. |
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| 481 | jy=1 |
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| 482 | do ix=0,nxmin1 |
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| 483 | wdummy=wdummy+ww(ix,jy,iz,n) |
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| 484 | end do |
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| 485 | wdummy=wdummy/real(nx) |
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| 486 | jy=0 |
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| 487 | do ix=0,nxmin1 |
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| 488 | ww(ix,jy,iz,n)=wdummy |
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| 489 | end do |
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| 490 | end do |
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| 491 | endif |
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| 492 | |
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| 493 | |
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| 494 | |
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| 495 | !*********************************************************************************** |
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| 496 | ! IP & SEC, 201812 GFS clouds read |
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| 497 | if (readclouds) then |
|---|
| 498 | ! The method is loops all grids vertically and constructs the 3D matrix for clouds |
|---|
| 499 | ! Cloud top and cloud bottom gid cells are assigned as well as the total column |
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| 500 | ! cloud water. For precipitating grids, the type and whether it is in or below |
|---|
| 501 | ! cloud scavenging are assigned with numbers 2-5 (following the old metod). |
|---|
| 502 | ! Distinction is done for lsp and convp though they are treated the same in regards |
|---|
| 503 | ! to scavenging. Also clouds that are not precipitating are defined which may be |
|---|
| 504 | ! to include future cloud processing by non-precipitating-clouds. |
|---|
| 505 | !*********************************************************************************** |
|---|
| 506 | write(*,*) 'Global NCEP fields: using cloud water' |
|---|
| 507 | clw(:,:,:,n)=0.0 |
|---|
| 508 | ctwc(:,:,n)=0.0 |
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| 509 | clouds(:,:,:,n)=0 |
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| 510 | ! If water/ice are read separately into clwc and ciwc, store sum in clwc |
|---|
| 511 | do jy=0,nymin1 |
|---|
| 512 | do ix=0,nxmin1 |
|---|
| 513 | lsp=lsprec(ix,jy,1,n) |
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| 514 | convp=convprec(ix,jy,1,n) |
|---|
| 515 | prec=lsp+convp |
|---|
| 516 | ! Find clouds in the vertical |
|---|
| 517 | do kz=1, nz-1 !go from top to bottom |
|---|
| 518 | if (clwc(ix,jy,kz,n).gt.0) then |
|---|
| 519 | ! assuming rho is in kg/m3 and hz in m gives: kg/kg * kg/m3 *m3/kg /m = m2/m3 |
|---|
| 520 | clw(ix,jy,kz,n)=(clwc(ix,jy,kz,n)*rho(ix,jy,kz,n))*(height(kz+1)-height(kz)) |
|---|
| 521 | ctwc(ix,jy,n) = ctwc(ix,jy,n)+clw(ix,jy,kz,n) |
|---|
| 522 | cloudh_min=min(height(kz+1),height(kz)) |
|---|
| 523 | endif |
|---|
| 524 | end do |
|---|
| 525 | |
|---|
| 526 | ! If Precipitation. Define removal type in the vertical |
|---|
| 527 | if ((lsp.gt.0.01).or.(convp.gt.0.01)) then ! cloud and precipitation |
|---|
| 528 | |
|---|
| 529 | do kz=nz,2,-1 !go Bottom up! |
|---|
| 530 | if (clw(ix,jy,kz,n).gt. 0) then ! is in cloud |
|---|
| 531 | cloudsh(ix,jy,n)=cloudsh(ix,jy,n)+height(kz)-height(kz-1) |
|---|
| 532 | clouds(ix,jy,kz,n)=1 ! is a cloud |
|---|
| 533 | if (lsp.ge.convp) then |
|---|
| 534 | clouds(ix,jy,kz,n)=3 ! lsp in-cloud |
|---|
| 535 | else |
|---|
| 536 | clouds(ix,jy,kz,n)=2 ! convp in-cloud |
|---|
| 537 | endif ! convective or large scale |
|---|
| 538 | elseif((clw(ix,jy,kz,n).le.0) .and. (cloudh_min.ge.height(kz))) then ! is below cloud |
|---|
| 539 | if (lsp.ge.convp) then |
|---|
| 540 | clouds(ix,jy,kz,n)=5 ! lsp dominated washout |
|---|
| 541 | else |
|---|
| 542 | clouds(ix,jy,kz,n)=4 ! convp dominated washout |
|---|
| 543 | endif ! convective or large scale |
|---|
| 544 | endif |
|---|
| 545 | |
|---|
| 546 | if (height(kz).ge. 19000) then ! set a max height for removal |
|---|
| 547 | clouds(ix,jy,kz,n)=0 |
|---|
| 548 | endif !clw>0 |
|---|
| 549 | end do !nz |
|---|
| 550 | endif ! precipitation |
|---|
| 551 | end do |
|---|
| 552 | end do |
|---|
| 553 | else |
|---|
| 554 | write(*,*) 'Global NCEP fields: using cloud water from Parameterization' |
|---|
| 555 | ! write (*,*) 'initializing clouds, n:',n,nymin1,nxmin1,nz |
|---|
| 556 | ! create a cloud and rainout/washout field, clouds occur where rh>80% |
|---|
| 557 | ! total cloudheight is stored at level 0 |
|---|
| 558 | do jy=0,nymin1 |
|---|
| 559 | do ix=0,nxmin1 |
|---|
| 560 | rain_cloud_above=0 |
|---|
| 561 | lsp=lsprec(ix,jy,1,n) |
|---|
| 562 | convp=convprec(ix,jy,1,n) |
|---|
| 563 | cloudsh(ix,jy,n)=0 |
|---|
| 564 | do kz_inv=1,nz-1 |
|---|
| 565 | kz=nz-kz_inv+1 |
|---|
| 566 | pressure=rho(ix,jy,kz,n)*r_air*tt(ix,jy,kz,n) |
|---|
| 567 | rh=qv(ix,jy,kz,n)/f_qvsat(pressure,tt(ix,jy,kz,n)) |
|---|
| 568 | clouds(ix,jy,kz,n)=0 |
|---|
| 569 | if (rh.gt.0.8) then ! in cloud |
|---|
| 570 | if ((lsp.gt.0.01).or.(convp.gt.0.01)) then ! cloud and precipitation |
|---|
| 571 | rain_cloud_above=1 |
|---|
| 572 | cloudsh(ix,jy,n)=cloudsh(ix,jy,n)+height(kz)-height(kz-1) |
|---|
| 573 | if (lsp.ge.convp) then |
|---|
| 574 | clouds(ix,jy,kz,n)=3 ! lsp dominated rainout |
|---|
| 575 | else |
|---|
| 576 | clouds(ix,jy,kz,n)=2 ! convp dominated rainout |
|---|
| 577 | endif |
|---|
| 578 | else ! no precipitation |
|---|
| 579 | clouds(ix,jy,kz,n)=1 ! cloud |
|---|
| 580 | endif |
|---|
| 581 | else ! no cloud |
|---|
| 582 | if (rain_cloud_above.eq.1) then ! scavenging |
|---|
| 583 | if (lsp.ge.convp) then |
|---|
| 584 | clouds(ix,jy,kz,n)=5 ! lsp dominated washout |
|---|
| 585 | else |
|---|
| 586 | clouds(ix,jy,kz,n)=4 ! convp dominated washout |
|---|
| 587 | endif |
|---|
| 588 | endif |
|---|
| 589 | endif |
|---|
| 590 | end do |
|---|
| 591 | end do |
|---|
| 592 | end do |
|---|
| 593 | endif ! IP & SEC 201812, GFS clouds read |
|---|
| 594 | |
|---|
| 595 | |
|---|
| 596 | end subroutine verttransform_gfs |
|---|
