[15] | 1 | !********************************************************************** |
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| 2 | ! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010 * |
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| 3 | ! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa, * |
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| 4 | ! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann * |
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| 5 | ! * |
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| 6 | ! This file is part of FLEXPART. * |
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| 7 | ! * |
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| 8 | ! FLEXPART is free software: you can redistribute it and/or modify * |
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| 9 | ! it under the terms of the GNU General Public License as published by* |
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| 10 | ! the Free Software Foundation, either version 3 of the License, or * |
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| 11 | ! (at your option) any later version. * |
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| 12 | ! * |
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| 13 | ! FLEXPART is distributed in the hope that it will be useful, * |
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| 14 | ! but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 15 | ! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 16 | ! GNU General Public License for more details. * |
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| 17 | ! * |
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| 18 | ! You should have received a copy of the GNU General Public License * |
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| 19 | ! along with FLEXPART. If not, see <http://www.gnu.org/licenses/>. * |
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| 20 | !********************************************************************** |
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| 21 | |
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| 22 | subroutine gridcheck |
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| 23 | |
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| 24 | !********************************************************************** |
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| 25 | ! * |
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| 26 | ! FLEXPART MODEL SUBROUTINE GRIDCHECK * |
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| 27 | ! * |
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| 28 | !********************************************************************** |
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| 29 | ! * |
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| 30 | ! AUTHOR: G. WOTAWA * |
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| 31 | ! DATE: 1997-08-06 * |
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| 32 | ! LAST UPDATE: 1997-10-10 * |
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| 33 | ! * |
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| 34 | ! Update: 1999-02-08, global fields allowed, A. Stohl* |
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| 35 | ! CHANGE: 17/11/2005, Caroline Forster, GFS data * |
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| 36 | ! CHANGE: 11/01/2008, Harald Sodemann, GRIB1/2 input with * |
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| 37 | ! ECMWF grib_api * |
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| 38 | ! CHANGE: 03/12/2008, Harald Sodemann, update to f90 with * |
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| 39 | ! ECMWF grib_api * |
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| 40 | ! CHANGE: Jerome Brioude, sort akm * |
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| 41 | !********************************************************************** |
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| 42 | ! * |
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| 43 | ! DESCRIPTION: * |
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| 44 | ! * |
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| 45 | ! THIS SUBROUTINE DETERMINES THE GRID SPECIFICATIONS (LOWER LEFT * |
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| 46 | ! LONGITUDE, LOWER LEFT LATITUDE, NUMBER OF GRID POINTS, GRID DIST- * |
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| 47 | ! ANCE AND VERTICAL DISCRETIZATION OF THE ECMWF MODEL) FROM THE * |
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| 48 | ! GRIB HEADER OF THE FIRST INPUT FILE. THE CONSISTANCY (NO CHANGES * |
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| 49 | ! WITHIN ONE FLEXPART RUN) IS CHECKED IN THE ROUTINE "READWIND" AT * |
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| 50 | ! ANY CALL. * |
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| 51 | ! * |
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| 52 | ! XLON0 geographical longitude of lower left gridpoint * |
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| 53 | ! YLAT0 geographical latitude of lower left gridpoint * |
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| 54 | ! NX number of grid points x-direction * |
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| 55 | ! NY number of grid points y-direction * |
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| 56 | ! DX grid distance x-direction * |
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| 57 | ! DY grid distance y-direction * |
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| 58 | ! NUVZ number of grid points for horizontal wind * |
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| 59 | ! components in z direction * |
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| 60 | ! NWZ number of grid points for vertical wind * |
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| 61 | ! component in z direction * |
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| 62 | ! sizesouth, sizenorth give the map scale (i.e. number of virtual grid* |
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| 63 | ! points of the polar stereographic grid): * |
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| 64 | ! used to check the CFL criterion * |
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| 65 | ! UVHEIGHT(1)- heights of gridpoints where u and v are * |
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| 66 | ! UVHEIGHT(NUVZ) given * |
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| 67 | ! WHEIGHT(1)- heights of gridpoints where w is given * |
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| 68 | ! WHEIGHT(NWZ) * |
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| 69 | ! * |
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| 70 | !********************************************************************** |
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| 71 | |
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| 72 | use grib_api |
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| 73 | use par_mod |
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| 74 | use com_mod |
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| 75 | use conv_mod |
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| 76 | use cmapf_mod, only: stlmbr,stcm2p |
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| 77 | |
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| 78 | implicit none |
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| 79 | |
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| 80 | !HSO parameters for grib_api |
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| 81 | integer :: ifile |
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| 82 | integer :: iret |
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| 83 | integer :: igrib,inc |
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| 84 | real(kind=4) :: xaux1,xaux2,yaux1,yaux2 |
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| 85 | real(kind=8) :: xaux1in,xaux2in,yaux1in,yaux2in |
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| 86 | integer :: gribVer,parCat,parNum,typSurf,valSurf,discipl |
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| 87 | !HSO end |
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| 88 | integer :: ix,jy,i,ifn,ifield,j,k,iumax,iwmax,numskip |
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| 89 | real :: sizesouth,sizenorth,xauxa,pint |
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| 90 | real :: akm_usort(nwzmax),akm2(nwzmax) |
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| 91 | real,parameter :: eps=0.0001 |
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| 92 | |
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| 93 | ! NCEP GFS |
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| 94 | real :: pres(nwzmax), help |
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| 95 | |
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| 96 | integer :: i179,i180,i181 |
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| 97 | |
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| 98 | ! VARIABLES AND ARRAYS NEEDED FOR GRIB DECODING |
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| 99 | |
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| 100 | integer :: isec1(8),isec2(3) |
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| 101 | real(kind=4) :: zsec4(jpunp) |
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| 102 | character(len=1) :: opt |
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| 103 | |
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| 104 | !HSO grib api error messages |
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| 105 | character(len=24) :: gribErrorMsg = 'Error reading grib file' |
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| 106 | character(len=20) :: gribFunction = 'gridcheckwind_gfs' |
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| 107 | ! |
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| 108 | if (numbnests.ge.1) then |
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| 109 | write(*,*) ' ###########################################' |
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| 110 | write(*,*) ' FLEXPART ERROR SUBROUTINE GRIDCHECK:' |
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| 111 | write(*,*) ' NO NESTED WINDFIELDAS ALLOWED FOR GFS! ' |
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| 112 | write(*,*) ' ###########################################' |
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| 113 | stop |
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| 114 | endif |
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| 115 | |
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| 116 | iumax=0 |
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| 117 | iwmax=0 |
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| 118 | |
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| 119 | if(ideltas.gt.0) then |
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| 120 | ifn=1 |
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| 121 | else |
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| 122 | ifn=numbwf |
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| 123 | endif |
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| 124 | ! |
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| 125 | ! OPENING OF DATA FILE (GRIB CODE) |
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| 126 | ! |
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| 127 | 5 call grib_open_file(ifile,path(3)(1:length(3)) & |
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| 128 | //trim(wfname(ifn)),'r',iret) |
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| 129 | if (iret.ne.GRIB_SUCCESS) then |
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| 130 | goto 999 ! ERROR DETECTED |
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| 131 | endif |
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| 132 | !turn on support for multi fields messages |
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| 133 | call grib_multi_support_on |
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| 134 | |
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| 135 | ifield=0 |
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| 136 | 10 ifield=ifield+1 |
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| 137 | ! |
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| 138 | ! GET NEXT FIELDS |
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| 139 | ! |
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| 140 | call grib_new_from_file(ifile,igrib,iret) |
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| 141 | if (iret.eq.GRIB_END_OF_FILE ) then |
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| 142 | goto 30 ! EOF DETECTED |
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| 143 | elseif (iret.ne.GRIB_SUCCESS) then |
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| 144 | goto 999 ! ERROR DETECTED |
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| 145 | endif |
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| 146 | |
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| 147 | !first see if we read GRIB1 or GRIB2 |
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| 148 | call grib_get_int(igrib,'editionNumber',gribVer,iret) |
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| 149 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 150 | |
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| 151 | if (gribVer.eq.1) then ! GRIB Edition 1 |
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| 152 | |
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| 153 | !read the grib1 identifiers |
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| 154 | call grib_get_int(igrib,'indicatorOfParameter',isec1(6),iret) |
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| 155 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 156 | call grib_get_int(igrib,'indicatorOfTypeOfLevel',isec1(7),iret) |
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| 157 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 158 | call grib_get_int(igrib,'level',isec1(8),iret) |
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| 159 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 160 | |
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| 161 | !get the size and data of the values array |
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| 162 | call grib_get_real4_array(igrib,'values',zsec4,iret) |
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| 163 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 164 | |
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| 165 | else ! GRIB Edition 2 |
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| 166 | |
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| 167 | !read the grib2 identifiers |
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| 168 | call grib_get_int(igrib,'discipline',discipl,iret) |
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| 169 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 170 | call grib_get_int(igrib,'parameterCategory',parCat,iret) |
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| 171 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 172 | call grib_get_int(igrib,'parameterNumber',parNum,iret) |
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| 173 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 174 | call grib_get_int(igrib,'typeOfFirstFixedSurface',typSurf,iret) |
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| 175 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 176 | call grib_get_int(igrib,'scaledValueOfFirstFixedSurface', & |
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| 177 | valSurf,iret) |
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| 178 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 179 | |
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| 180 | !convert to grib1 identifiers |
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| 181 | isec1(6)=-1 |
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| 182 | isec1(7)=-1 |
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| 183 | isec1(8)=-1 |
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| 184 | if ((parCat.eq.2).and.(parNum.eq.2).and.(typSurf.eq.100)) then ! U |
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| 185 | isec1(6)=33 ! indicatorOfParameter |
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| 186 | isec1(7)=100 ! indicatorOfTypeOfLevel |
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| 187 | isec1(8)=valSurf/100 ! level, convert to hPa |
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| 188 | elseif ((parCat.eq.3).and.(parNum.eq.5).and.(typSurf.eq.1)) then ! TOPO |
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| 189 | isec1(6)=7 ! indicatorOfParameter |
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| 190 | isec1(7)=1 ! indicatorOfTypeOfLevel |
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| 191 | isec1(8)=0 |
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| 192 | elseif ((parCat.eq.0).and.(parNum.eq.0).and.(typSurf.eq.1) & |
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| 193 | .and.(discipl.eq.2)) then ! LSM |
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| 194 | isec1(6)=81 ! indicatorOfParameter |
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| 195 | isec1(7)=1 ! indicatorOfTypeOfLevel |
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| 196 | isec1(8)=0 |
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| 197 | endif |
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| 198 | |
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| 199 | if (isec1(6).ne.-1) then |
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| 200 | ! get the size and data of the values array |
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| 201 | call grib_get_real4_array(igrib,'values',zsec4,iret) |
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| 202 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 203 | endif |
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| 204 | |
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| 205 | endif ! gribVer |
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| 206 | |
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| 207 | if(ifield.eq.1) then |
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| 208 | |
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| 209 | !get the required fields from section 2 |
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| 210 | !store compatible to gribex input |
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| 211 | call grib_get_int(igrib,'numberOfPointsAlongAParallel', & |
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| 212 | isec2(2),iret) |
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| 213 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 214 | call grib_get_int(igrib,'numberOfPointsAlongAMeridian', & |
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| 215 | isec2(3),iret) |
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| 216 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 217 | call grib_get_real8(igrib,'longitudeOfFirstGridPointInDegrees', & |
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| 218 | xaux1in,iret) |
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| 219 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 220 | call grib_get_real8(igrib,'longitudeOfLastGridPointInDegrees', & |
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| 221 | xaux2in,iret) |
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| 222 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 223 | call grib_get_real8(igrib,'latitudeOfLastGridPointInDegrees', & |
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| 224 | yaux1in,iret) |
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| 225 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 226 | call grib_get_real8(igrib,'latitudeOfFirstGridPointInDegrees', & |
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| 227 | yaux2in,iret) |
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| 228 | call grib_check(iret,gribFunction,gribErrorMsg) |
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| 229 | |
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| 230 | xaux1=xaux1in |
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| 231 | xaux2=xaux2in |
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| 232 | yaux1=yaux1in |
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| 233 | yaux2=yaux2in |
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| 234 | |
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| 235 | nxfield=isec2(2) |
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| 236 | ny=isec2(3) |
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| 237 | if((abs(xaux1).lt.eps).and.(xaux2.ge.359)) then ! NCEP DATA FROM 0 TO |
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| 238 | xaux1=-179.0 ! 359 DEG EAST -> |
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| 239 | xaux2=-179.0+360.-360./real(nxfield) ! TRANSFORMED TO -179 |
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| 240 | endif ! TO 180 DEG EAST |
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| 241 | if (xaux1.gt.180) xaux1=xaux1-360.0 |
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| 242 | if (xaux2.gt.180) xaux2=xaux2-360.0 |
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| 243 | if (xaux1.lt.-180) xaux1=xaux1+360.0 |
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| 244 | if (xaux2.lt.-180) xaux2=xaux2+360.0 |
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| 245 | if (xaux2.lt.xaux1) xaux2=xaux2+360. |
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| 246 | xlon0=xaux1 |
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| 247 | ylat0=yaux1 |
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| 248 | dx=(xaux2-xaux1)/real(nxfield-1) |
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| 249 | dy=(yaux2-yaux1)/real(ny-1) |
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| 250 | dxconst=180./(dx*r_earth*pi) |
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| 251 | dyconst=180./(dy*r_earth*pi) |
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| 252 | !HSO end edits |
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| 253 | |
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| 254 | |
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| 255 | ! Check whether fields are global |
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| 256 | ! If they contain the poles, specify polar stereographic map |
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| 257 | ! projections using the stlmbr- and stcm2p-calls |
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| 258 | !*********************************************************** |
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| 259 | |
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| 260 | xauxa=abs(xaux2+dx-360.-xaux1) |
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| 261 | if (xauxa.lt.0.001) then |
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| 262 | nx=nxfield+1 ! field is cyclic |
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| 263 | xglobal=.true. |
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| 264 | if (abs(nxshift).ge.nx) & |
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| 265 | stop 'nxshift in file par_mod is too large' |
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| 266 | xlon0=xlon0+real(nxshift)*dx |
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| 267 | else |
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| 268 | nx=nxfield |
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| 269 | xglobal=.false. |
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| 270 | if (nxshift.ne.0) & |
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| 271 | stop 'nxshift (par_mod) must be zero for non-global domain' |
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| 272 | endif |
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| 273 | nxmin1=nx-1 |
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| 274 | nymin1=ny-1 |
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| 275 | if (xlon0.gt.180.) xlon0=xlon0-360. |
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| 276 | xauxa=abs(yaux1+90.) |
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| 277 | if (xglobal.and.xauxa.lt.0.001) then |
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| 278 | sglobal=.true. ! field contains south pole |
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| 279 | ! Enhance the map scale by factor 3 (*2=6) compared to north-south |
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| 280 | ! map scale |
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| 281 | sizesouth=6.*(switchsouth+90.)/dy |
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| 282 | call stlmbr(southpolemap,-90.,0.) |
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| 283 | call stcm2p(southpolemap,0.,0.,switchsouth,0.,sizesouth, & |
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| 284 | sizesouth,switchsouth,180.) |
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| 285 | switchsouthg=(switchsouth-ylat0)/dy |
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| 286 | else |
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| 287 | sglobal=.false. |
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| 288 | switchsouthg=999999. |
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| 289 | endif |
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| 290 | xauxa=abs(yaux2-90.) |
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| 291 | if (xglobal.and.xauxa.lt.0.001) then |
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| 292 | nglobal=.true. ! field contains north pole |
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| 293 | ! Enhance the map scale by factor 3 (*2=6) compared to north-south |
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| 294 | ! map scale |
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| 295 | sizenorth=6.*(90.-switchnorth)/dy |
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| 296 | call stlmbr(northpolemap,90.,0.) |
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| 297 | call stcm2p(northpolemap,0.,0.,switchnorth,0.,sizenorth, & |
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| 298 | sizenorth,switchnorth,180.) |
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| 299 | switchnorthg=(switchnorth-ylat0)/dy |
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| 300 | else |
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| 301 | nglobal=.false. |
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| 302 | switchnorthg=999999. |
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| 303 | endif |
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| 304 | endif ! ifield.eq.1 |
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| 305 | |
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| 306 | if (nxshift.lt.0) stop 'nxshift (par_mod) must not be negative' |
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| 307 | if (nxshift.ge.nxfield) stop 'nxshift (par_mod) too large' |
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| 308 | |
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| 309 | ! NCEP ISOBARIC LEVELS |
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| 310 | !********************* |
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| 311 | |
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| 312 | if((isec1(6).eq.33).and.(isec1(7).eq.100)) then ! check for U wind |
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| 313 | iumax=iumax+1 |
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| 314 | pres(iumax)=real(isec1(8))*100.0 |
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| 315 | endif |
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| 316 | |
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| 317 | |
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| 318 | i179=nint(179./dx) |
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| 319 | if (dx.lt.0.7) then |
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| 320 | i180=nint(180./dx)+1 ! 0.5 deg data |
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| 321 | else |
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| 322 | i180=nint(179./dx)+1 ! 1 deg data |
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| 323 | endif |
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| 324 | i181=i180+1 |
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| 325 | |
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| 326 | |
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| 327 | ! NCEP TERRAIN |
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| 328 | !************* |
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| 329 | |
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| 330 | if((isec1(6).eq.007).and.(isec1(7).eq.001)) then |
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| 331 | do jy=0,ny-1 |
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| 332 | do ix=0,nxfield-1 |
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| 333 | help=zsec4(nxfield*(ny-jy-1)+ix+1) |
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| 334 | if(ix.le.i180) then |
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| 335 | oro(i179+ix,jy)=help |
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| 336 | excessoro(i179+ix,jy)=0.0 ! ISOBARIC SURFACES: SUBGRID TERRAIN DISREGARDED |
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| 337 | else |
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| 338 | oro(ix-i181,jy)=help |
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| 339 | excessoro(ix-i181,jy)=0.0 ! ISOBARIC SURFACES: SUBGRID TERRAIN DISREGARDED |
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| 340 | endif |
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| 341 | end do |
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| 342 | end do |
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| 343 | endif |
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| 344 | |
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| 345 | ! NCEP LAND SEA MASK |
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| 346 | !******************* |
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| 347 | |
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| 348 | if((isec1(6).eq.081).and.(isec1(7).eq.001)) then |
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| 349 | do jy=0,ny-1 |
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| 350 | do ix=0,nxfield-1 |
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| 351 | help=zsec4(nxfield*(ny-jy-1)+ix+1) |
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| 352 | if(ix.le.i180) then |
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| 353 | lsm(i179+ix,jy)=help |
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| 354 | else |
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| 355 | lsm(ix-i181,jy)=help |
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| 356 | endif |
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| 357 | end do |
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| 358 | end do |
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| 359 | endif |
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| 360 | |
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| 361 | call grib_release(igrib) |
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| 362 | |
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| 363 | goto 10 !! READ NEXT LEVEL OR PARAMETER |
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| 364 | ! |
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| 365 | ! CLOSING OF INPUT DATA FILE |
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| 366 | ! |
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| 367 | |
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| 368 | ! HSO |
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| 369 | 30 continue |
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| 370 | call grib_close_file(ifile) |
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| 371 | ! HSO end edits |
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| 372 | |
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| 373 | nuvz=iumax |
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| 374 | nwz =iumax |
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| 375 | nlev_ec=iumax |
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| 376 | |
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| 377 | if (nx.gt.nxmax) then |
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| 378 | write(*,*) 'FLEXPART error: Too many grid points in x direction.' |
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| 379 | write(*,*) 'Reduce resolution of wind fields.' |
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| 380 | write(*,*) 'Or change parameter settings in file par_mod.' |
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| 381 | write(*,*) nx,nxmax |
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| 382 | stop |
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| 383 | endif |
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| 384 | |
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| 385 | if (ny.gt.nymax) then |
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| 386 | write(*,*) 'FLEXPART error: Too many grid points in y direction.' |
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| 387 | write(*,*) 'Reduce resolution of wind fields.' |
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| 388 | write(*,*) 'Or change parameter settings in file par_mod.' |
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| 389 | write(*,*) ny,nymax |
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| 390 | stop |
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| 391 | endif |
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| 392 | |
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| 393 | if (nuvz.gt.nuvzmax) then |
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| 394 | write(*,*) 'FLEXPART error: Too many u,v grid points in z '// & |
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| 395 | 'direction.' |
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| 396 | write(*,*) 'Reduce resolution of wind fields.' |
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| 397 | write(*,*) 'Or change parameter settings in file par_mod.' |
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| 398 | write(*,*) nuvz,nuvzmax |
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| 399 | stop |
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| 400 | endif |
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| 401 | |
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| 402 | if (nwz.gt.nwzmax) then |
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| 403 | write(*,*) 'FLEXPART error: Too many w grid points in z '// & |
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| 404 | 'direction.' |
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| 405 | write(*,*) 'Reduce resolution of wind fields.' |
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| 406 | write(*,*) 'Or change parameter settings in file par_mod.' |
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| 407 | write(*,*) nwz,nwzmax |
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| 408 | stop |
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| 409 | endif |
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| 410 | |
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| 411 | ! If desired, shift all grids by nxshift grid cells |
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| 412 | !************************************************** |
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| 413 | |
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| 414 | if (xglobal) then |
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| 415 | call shift_field_0(oro,nxfield,ny) |
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| 416 | call shift_field_0(lsm,nxfield,ny) |
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| 417 | call shift_field_0(excessoro,nxfield,ny) |
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| 418 | endif |
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| 419 | |
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| 420 | ! Output of grid info |
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| 421 | !******************** |
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| 422 | |
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| 423 | write(*,*) |
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| 424 | write(*,*) |
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| 425 | write(*,'(a,2i7)') '# of vertical levels in NCEP data: ', & |
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| 426 | nuvz,nwz |
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| 427 | write(*,*) |
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| 428 | write(*,'(a)') 'Mother domain:' |
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| 429 | write(*,'(a,f10.2,a1,f10.2,a,f10.2)') ' Longitude range: ', & |
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| 430 | xlon0,' to ',xlon0+(nx-1)*dx,' Grid distance: ',dx |
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| 431 | write(*,'(a,f10.2,a1,f10.2,a,f10.2)') ' Latitude range: ', & |
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| 432 | ylat0,' to ',ylat0+(ny-1)*dy,' Grid distance: ',dy |
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| 433 | write(*,*) |
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| 434 | |
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| 435 | |
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| 436 | ! CALCULATE VERTICAL DISCRETIZATION OF ECMWF MODEL |
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| 437 | ! PARAMETER akm,bkm DESCRIBE THE HYBRID "ETA" COORDINATE SYSTEM |
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| 438 | |
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| 439 | numskip=nlev_ec-nuvz ! number of ecmwf model layers not used |
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| 440 | ! by trajectory model |
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| 441 | do i=1,nwz |
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| 442 | j=numskip+i |
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| 443 | k=nlev_ec+1+numskip+i |
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| 444 | akm_usort(nwz-i+1)=pres(nwz-i+1) |
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| 445 | bkm(nwz-i+1)=0.0 |
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| 446 | end do |
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| 447 | |
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| 448 | !****************************** |
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| 449 | ! change Sabine Eckhardt: akm should always be in descending order ... readwind adapted! |
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| 450 | !****************************** |
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| 451 | do i=1,nwz |
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| 452 | if (akm_usort(1).gt.akm_usort(2)) then |
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| 453 | akm(i)=akm_usort(i) |
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| 454 | else |
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| 455 | akm(i)=akm_usort(nwz-i+1) |
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| 456 | endif |
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| 457 | end do |
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| 458 | |
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| 459 | !*************************** |
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| 460 | !JB sort akm which can be random |
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| 461 | do i=1,nwzmax |
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| 462 | akm2(i)=0. |
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| 463 | enddo |
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| 464 | do i=1,nwzmax |
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| 465 | if (akm(i).gt.akm2(1)) akm2(1)=akm(i) |
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| 466 | enddo |
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| 467 | inc=2 |
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| 468 | |
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| 469 | 44 do i=1,nwzmax |
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| 470 | if(akm(i).lt.akm2(inc-1).and.akm(i).gt.akm2(inc))akm2(inc)=akm(i) |
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| 471 | enddo |
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| 472 | inc=inc+1 |
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| 473 | if (inc.lt.nwzmax) goto 44 |
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| 474 | 45 continue |
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| 475 | akm=akm2 |
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| 476 | ! end JB |
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| 477 | |
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| 478 | ! |
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| 479 | ! CALCULATION OF AKZ, BKZ |
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| 480 | ! AKZ,BKZ: model discretization parameters at the center of each model |
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| 481 | ! layer |
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| 482 | ! |
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| 483 | ! Assign the 10 m winds to an artificial model level with akz=0 and bkz=1.0, |
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| 484 | ! i.e. ground level |
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| 485 | !***************************************************************************** |
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| 486 | |
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| 487 | do i=1,nuvz |
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| 488 | akz(i)=akm(i) |
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| 489 | bkz(i)=bkm(i) |
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| 490 | end do |
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| 491 | |
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| 492 | ! NOTE: In FLEXPART versions up to 4.0, the number of model levels was doubled |
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| 493 | ! upon the transformation to z levels. In order to save computer memory, this is |
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| 494 | ! not done anymore in the standard version. However, this option can still be |
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| 495 | ! switched on by replacing the following lines with those below, that are |
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| 496 | ! currently commented out. For this, similar changes are necessary in |
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| 497 | ! verttransform.f and verttranform_nests.f |
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| 498 | !***************************************************************************** |
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| 499 | |
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| 500 | nz=nuvz |
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| 501 | if (nz.gt.nzmax) stop 'nzmax too small' |
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| 502 | do i=1,nuvz |
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| 503 | aknew(i)=akz(i) |
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| 504 | bknew(i)=bkz(i) |
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| 505 | end do |
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| 506 | |
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| 507 | ! Switch on following lines to use doubled vertical resolution |
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| 508 | !************************************************************* |
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| 509 | !nz=nuvz+nwz-1 |
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| 510 | !if (nz.gt.nzmax) stop 'nzmax too small' |
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| 511 | !do 100 i=1,nwz |
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| 512 | ! aknew(2*(i-1)+1)=akm(i) |
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| 513 | !00 bknew(2*(i-1)+1)=bkm(i) |
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| 514 | !do 110 i=2,nuvz |
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| 515 | ! aknew(2*(i-1))=akz(i) |
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| 516 | !10 bknew(2*(i-1))=bkz(i) |
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| 517 | ! End doubled vertical resolution |
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| 518 | |
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| 519 | |
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| 520 | ! Determine the uppermost level for which the convection scheme shall be applied |
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| 521 | ! by assuming that there is no convection above 50 hPa (for standard SLP) |
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| 522 | !***************************************************************************** |
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| 523 | |
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| 524 | do i=1,nuvz-2 |
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| 525 | pint=akz(i)+bkz(i)*101325. |
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| 526 | if (pint.lt.5000.) goto 96 |
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| 527 | end do |
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| 528 | 96 nconvlev=i |
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| 529 | if (nconvlev.gt.nconvlevmax-1) then |
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| 530 | nconvlev=nconvlevmax-1 |
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| 531 | write(*,*) 'Attention, convection only calculated up to ', & |
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| 532 | akz(nconvlev)+bkz(nconvlev)*1013.25,' hPa' |
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| 533 | endif |
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| 534 | |
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| 535 | return |
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| 536 | |
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| 537 | 999 write(*,*) |
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| 538 | write(*,*) ' ###########################################'// & |
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| 539 | '###### ' |
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| 540 | write(*,*) ' TRAJECTORY MODEL SUBROUTINE GRIDCHECK:' |
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| 541 | write(*,*) ' CAN NOT OPEN INPUT DATA FILE '//wfname(ifn) |
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| 542 | write(*,*) ' ###########################################'// & |
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| 543 | '###### ' |
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| 544 | write(*,*) |
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| 545 | write(*,'(a)') '!!! PLEASE INSERT A NEW CD-ROM AND !!!' |
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| 546 | write(*,'(a)') '!!! PRESS ANY KEY TO CONTINUE... !!!' |
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| 547 | write(*,'(a)') '!!! ...OR TERMINATE FLEXPART PRESSING!!!' |
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| 548 | write(*,'(a)') '!!! THE "X" KEY... !!!' |
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| 549 | write(*,*) |
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| 550 | read(*,'(a)') opt |
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| 551 | if(opt.eq.'X') then |
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| 552 | stop |
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| 553 | else |
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| 554 | goto 5 |
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| 555 | endif |
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| 556 | |
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| 557 | end subroutine gridcheck |
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