[5f2e8f6] | 1 | !********************************************************************** |
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| 2 | ! Copyright 2016 * |
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| 3 | ! Andreas Stohl, Massimo Cassiani, Petra Seibert, A. Frank, * |
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| 4 | ! Gerhard Wotawa, Caroline Forster, Sabine Eckhardt, John Burkhart, * |
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| 5 | ! Harald Sodemann, Ignacio Pisso * |
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| 6 | ! * |
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| 7 | ! This file is part of FLEXPART-NorESM * |
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| 8 | ! * |
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| 9 | ! FLEXPART-NorESM is free software: you can redistribute it * |
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| 10 | ! and/or modify * |
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| 11 | ! it under the terms of the GNU General Public License as published by* |
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| 12 | ! the Free Software Foundation, either version 3 of the License, or * |
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| 13 | ! (at your option) any later version. * |
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| 14 | ! * |
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| 15 | ! FLEXPART-NorESM is distributed in the hope that it will be useful, * |
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| 16 | ! but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 17 | ! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 18 | ! GNU General Public License for more details. * |
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| 19 | ! * |
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| 20 | ! You should have received a copy of the GNU General Public License * |
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| 21 | ! along with FLEXPART-NorESM. * |
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| 22 | ! If not, see <http://www.gnu.org/licenses/>. * |
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| 23 | !********************************************************************** |
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| 24 | |
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| 25 | |
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| 26 | subroutine transform_omega_etadot(uuh,vvh,wwh,n) |
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| 27 | !i i i/o i |
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| 28 | |
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| 29 | !* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
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| 30 | !* * |
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| 31 | !* calculate eta_dot*dp_eta = wwh-dp_dt-u*dp_dx-v*dp_dy on costant eta levels * |
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| 32 | !* put eta_dot*dp_eta in wwh * |
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| 33 | !* here we use ps to obatin p, * |
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| 34 | !* other variables used and in common block are: * |
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| 35 | !* ps(ix,jy,1,n),akz(kz),bkz(kz),ps_tplus1_and_min1(ix,jy,indj-1 or indj+1) * |
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| 36 | !* if methodw is not 1 routne is not used * |
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| 37 | !* * |
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| 38 | !* * |
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| 39 | !* Author: * |
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| 40 | !* M. Cassiani 2016 * |
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| 41 | !* * |
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| 42 | !* * |
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| 43 | !* * |
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| 44 | !* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
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| 45 | |
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| 46 | use par_mod |
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| 47 | use com_mod |
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| 48 | |
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| 49 | implicit none |
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| 50 | |
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| 51 | integer :: ix,jy,kz,n,ixp,ixm,deltat |
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| 52 | real(kind=4) :: uuh(0:nxmax-1,0:nymax-1,nuvzmax) |
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| 53 | real(kind=4) :: vvh(0:nxmax-1,0:nymax-1,nuvzmax) |
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| 54 | real(kind=4) :: wwh(0:nxmax-1,0:nymax-1,nwzmax) |
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| 55 | real(kind=4) :: pressure(0:nxmax-1,0:nymax-1,nwzmax) |
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| 56 | real(kind=4) :: dpressuredt(0:nxmax-1,0:nymax-1,nwzmax) |
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| 57 | real(kind=4) :: etadotdpdeta(0:nxmax-1,0:nymax-1,nwzmax) !not necessary but introduced for clarity eventually we coul rewrite wwh |
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| 58 | real(kind=4) :: oneoverdxinm(0:nymax-1) |
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| 59 | real(kind=4) :: oneoverdyinm,dpdx,dpdy |
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| 60 | |
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| 61 | |
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| 62 | |
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| 63 | do jy=1,ny-2 |
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| 64 | oneoverdxinm(jy)=dxconst/cos((real(jy)*dy+ylat0)*pi180) |
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| 65 | end do |
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| 66 | oneoverdyinm=dyconst |
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| 67 | |
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| 68 | |
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| 69 | |
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| 70 | do jy=0,nymin1 |
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| 71 | do ix=0, nxfield-1 |
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| 72 | do kz=2,nuvz !here nuvz is 27 (top of the domain) we skyp level one (extra kayer at the ground) |
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| 73 | pressure(ix,jy,kz)=akz(kz)+bkz(kz)*ps(ix,jy,1,n) |
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| 74 | dpressuredt(ix,jy,kz)=bkz(kz)*(ps_tplus1_and_min1(ix,jy,2)-ps_tplus1_and_min1(ix,jy,1)) !ps_tplus1_and_min1 is already divided for the time interval |
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| 75 | end do |
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| 76 | end do |
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| 77 | end do |
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| 78 | |
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| 79 | |
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| 80 | do jy=1,nymin1-1 !skip the poles |
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| 81 | do ix=0, nxfield-1 |
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| 82 | ixp=ix+1 |
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| 83 | ixm=ix-1 |
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| 84 | if (ixm.eq.-1) ixm=nxfield-1 !special treatment for 0 and nxfield-1, |
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| 85 | if (ixp.eq.nxfield) ixp=0 !special treatment for 0 and nxfield-1, |
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| 86 | do kz=2,nuvz !here nuvz is 27 (top of the domain) we skip level one (extra layer at the ground) |
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| 87 | dpdx=(pressure(ixp,jy,kz)-pressure(ixm,jy,kz))*oneoverdxinm(jy)*0.5 !ix increase eastward i.e. in the direction positive u (positive towards the east) |
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| 88 | dpdy=(pressure(ix,jy+1,kz)-pressure(ix,jy-1,kz))*oneoverdyinm*0.5 !jy incrrease northward i.e. in the direction positive v (positivwe towards the north) |
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| 89 | etadotdpdeta(ix,jy,kz)=wwh(ix,jy,kz)-dpressuredt(ix,jy,kz)-uuh(ix,jy,kz)*dpdx-vvh(ix,jy,kz)*dpdy |
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| 90 | ixp=ixp |
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| 91 | end do |
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| 92 | end do |
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| 93 | end do |
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| 94 | |
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| 95 | do jy=1,nymin1-1 !skip the poles |
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| 96 | do ix=0, nxfield-1 !special treatment for 0 and nxfield-1, |
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| 97 | do kz=2,nuvz !here nuvz is 27 (top of the domain) we skip level one (extra layer at the ground) |
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| 98 | wwh(ix,jy,kz)=etadotdpdeta(ix,jy,kz) |
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| 99 | end do |
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| 100 | end do |
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| 101 | end do |
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| 102 | |
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| 103 | wwh(:,0,:)=0. |
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| 104 | wwh(:,nymin1,:)=0. |
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| 105 | |
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| 106 | do ix=0, nxfield-1 ! |
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| 107 | do kz=2,nuvz !here nuvz is 27 (top of the domain) we skip level one (extra layer at the ground) |
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| 108 | wwh(ix,0,kz)=wwh(ix,0,kz)+etadotdpdeta(ix,1,kz)/nxfield !set to averaged value of next circle |
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| 109 | wwh(ix,nymin1,kz)= wwh(ix,nymin1,kz)+etadotdpdeta(ix,nymin1-1,kz)/nxfield !set to averaged value of previous circle |
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| 110 | end do |
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| 111 | end do |
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| 112 | |
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| 113 | |
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| 114 | |
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| 115 | return |
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| 116 | end |
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