| 1 | subroutine sugas_corrk |
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| 2 | |
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| 3 | !================================================================== |
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| 4 | ! |
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| 5 | ! Purpose |
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| 6 | ! ------- |
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| 7 | ! Set up gaseous absorption parameters used by the radiation code. |
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| 8 | ! This subroutine is a replacement for the old 'setrad', which contained |
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| 9 | ! both absorption and scattering data. |
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| 10 | ! |
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| 11 | ! Authors |
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| 12 | ! ------- |
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| 13 | ! Adapted and generalised from the NASA Ames code by Robin Wordsworth (2009) |
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| 14 | ! Added double gray case by Jeremy Leconte (2012) |
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| 15 | ! New HITRAN continuum data section by RW (2012) |
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| 16 | ! |
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| 17 | ! Summary |
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| 18 | ! ------- |
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| 19 | ! |
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| 20 | !================================================================== |
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| 21 | |
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| 22 | use radinc_h, only: L_NSPECTV, & |
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| 23 | L_NGAUSS, L_NPREF, L_NTREF, L_REFVAR, L_PINT |
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| 24 | use radcommon_h, only : pgasref,pfgasref,pgasmin,pgasmax |
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| 25 | use radcommon_h, only : tgasref,tgasmin,tgasmax |
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| 26 | use radcommon_h, only : gasv,FZEROV,gweight |
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| 27 | use radcommon_h, only : WNOV |
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| 28 | use datafile_mod, only: datadir,corrkdir,banddir |
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| 29 | use gases_h, only: gnom, ngasmx, igas_H2O |
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| 30 | implicit none |
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| 31 | #include "YOMCST.h" |
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| 32 | #include "clesphys.h" |
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| 33 | |
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| 34 | !================================================================== |
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| 35 | |
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| 36 | logical file_ok |
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| 37 | |
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| 38 | integer n, nt, np, nh, ng, nw, m, i |
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| 39 | |
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| 40 | character(len=200) :: file_id |
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| 41 | character(len=500) :: file_path |
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| 42 | |
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| 43 | ! ALLOCATABLE ARRAYS -- AS 12/2011 |
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| 44 | REAL*8, DIMENSION(:,:,:,:,:), ALLOCATABLE,SAVE :: gasi8, gasv8 !read by master |
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| 45 | character*20,allocatable,DIMENSION(:),SAVE :: gastype ! for check with gnom, read by master |
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| 46 | |
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| 47 | real*8 x, xi(4), yi(4), ans, p |
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| 48 | ! For gray case (JL12) |
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| 49 | real kappa_VI, kappa_IR, IR_VI_wnlimit |
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| 50 | integer nVI_limit |
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| 51 | |
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| 52 | integer ngas, igas, jgas |
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| 53 | |
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| 54 | double precision testcont ! for continuum absorption initialisation |
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| 55 | |
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| 56 | integer :: dummy |
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| 57 | character(len=100) :: message |
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| 58 | character(len=10),parameter :: subname="sugascorrk" |
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| 59 | |
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| 60 | !======================================================================= |
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| 61 | ! Load variable species data, exit if we have wrong database |
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| 62 | file_id='/corrk_data/' // TRIM(corrkdir) // '/Q.dat' |
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| 63 | file_path=TRIM(datadir)//TRIM(file_id) |
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| 64 | |
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| 65 | ! check that the file exists |
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| 66 | inquire(FILE=file_path,EXIST=file_ok) |
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| 67 | if(.not.file_ok) then |
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| 68 | write(*,*)'The file ',TRIM(file_path) |
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| 69 | write(*,*)'was not found by sugas_corrk.F90, exiting.' |
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| 70 | write(*,*)'Check that your path to datagcm:',trim(datadir) |
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| 71 | write(*,*)' is correct. You can change it in callphys.def with:' |
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| 72 | write(*,*)' datadir = /absolute/path/to/datagcm' |
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| 73 | message='Also check that the corrkdir you chose in callphys.def exists.' |
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| 74 | call abort_physic(subname,message,1) |
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| 75 | endif |
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| 76 | |
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| 77 | !$OMP MASTER |
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| 78 | ! check that database matches varactive toggle |
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| 79 | open(111,file=TRIM(file_path),form='formatted') |
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| 80 | read(111,*) ngas |
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| 81 | |
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| 82 | if(ngas.ne.ngasmx)then |
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| 83 | print*,'Number of gases in radiative transfer data (',ngas,') does not', & |
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| 84 | 'match that in gases_h (',ngasmx,')' |
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| 85 | message='exiting.' |
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| 86 | call abort_physic(subname,message,1) |
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| 87 | endif |
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| 88 | |
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| 89 | if(ngas.gt.5 .or. ngas.lt.1)then |
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| 90 | print*,ngas,' species in database [', & |
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| 91 | corrkdir(1:LEN_TRIM(corrkdir)),']' |
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| 92 | message='radiative code cannot handle this.' |
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| 93 | call abort_physic(subname,message,1) |
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| 94 | endif |
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| 95 | |
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| 96 | ! dynamically allocate gastype and read from Q.dat |
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| 97 | IF ( .NOT. ALLOCATED( gastype ) ) ALLOCATE( gastype( ngas ) ) |
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| 98 | |
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| 99 | do igas=1,ngas |
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| 100 | read(111,*) gastype(igas) |
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| 101 | print*,'Gas ',igas,' is ',gastype(igas) |
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| 102 | enddo |
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| 103 | |
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| 104 | ! get array size, load the coefficients |
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| 105 | open(111,file=TRIM(file_path),form='formatted') |
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| 106 | read(111,*) L_REFVAR |
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| 107 | ! IF( .NOT. ALLOCATED( wrefvar ) ) ALLOCATE( WREFVAR(L_REFVAR) ) |
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| 108 | ! read(111,*) wrefvar |
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| 109 | close(111) |
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| 110 | |
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| 111 | if(L_REFVAR.gt.1)then |
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| 112 | print*,'The database [', & |
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| 113 | corrkdir(1:LEN_TRIM(corrkdir)), & |
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| 114 | '] has a variable species.' |
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| 115 | message='Not possible with Venus...' |
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| 116 | call abort_physic(subname,message,1) |
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| 117 | endif |
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| 118 | |
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| 119 | ! Check that gastype and gnom match |
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| 120 | do igas=1,ngas |
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| 121 | print*,'Gas ',igas,' is ',trim(gnom(igas)) |
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| 122 | if (trim(gnom(igas)).ne.trim(gastype(igas))) then |
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| 123 | print*,'Name of a gas in radiative transfer data (',trim(gastype(igas)),') does not ', & |
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| 124 | 'match that in gases.def (',trim(gnom(igas)),'). You should compare ', & |
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| 125 | 'gases.def with Q.dat in your radiative transfer directory.' |
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| 126 | message='exiting.' |
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| 127 | call abort_physic(subname,message,1) |
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| 128 | endif |
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| 129 | enddo |
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| 130 | print*,'Confirmed gas match in radiative transfer and gases_h!' |
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| 131 | |
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| 132 | ! display the values |
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| 133 | ! print*,'Variable gas volume mixing ratios:' |
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| 134 | ! do n=1,L_REFVAR |
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| 135 | !print*,n,'.',wrefvar(n),' kg/kg' ! pay attention! |
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| 136 | ! print*,n,'.',wrefvar(n),' mol/mol' |
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| 137 | ! end do |
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| 138 | print*,'' |
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| 139 | |
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| 140 | !======================================================================= |
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| 141 | ! Set the weighting in g-space |
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| 142 | |
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| 143 | file_id='/corrk_data/' // TRIM(corrkdir) // '/g.dat' |
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| 144 | file_path=TRIM(datadir)//TRIM(file_id) |
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| 145 | |
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| 146 | ! check that the file exists |
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| 147 | inquire(FILE=file_path,EXIST=file_ok) |
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| 148 | if(.not.file_ok) then |
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| 149 | write(*,*)'The file ',TRIM(file_path) |
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| 150 | write(*,*)'was not found by sugas_corrk.F90, exiting.' |
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| 151 | write(*,*)'Check that your path to datagcm:',trim(datadir) |
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| 152 | write(*,*)' is correct. You can change it in callphys.def with:' |
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| 153 | write(*,*)' datadir = /absolute/path/to/datagcm' |
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| 154 | message='Also check that the corrkdir you chose in callphys.def exists.' |
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| 155 | call abort_physic(subname,message,1) |
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| 156 | endif |
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| 157 | |
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| 158 | ! check the array size is correct, load the coefficients |
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| 159 | open(111,file=TRIM(file_path),form='formatted') |
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| 160 | read(111,*) L_NGAUSS |
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| 161 | IF( .NOT. ALLOCATED( gweight ) ) ALLOCATE( GWEIGHT(L_NGAUSS) ) |
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| 162 | read(111,*) gweight |
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| 163 | close(111) |
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| 164 | |
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| 165 | ! display the values |
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| 166 | print*,'Correlated-k g-space grid:' |
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| 167 | do n=1,L_NGAUSS |
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| 168 | print*,n,'.',gweight(n) |
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| 169 | end do |
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| 170 | print*,'' |
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| 171 | |
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| 172 | !======================================================================= |
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| 173 | ! Set the reference pressure and temperature arrays. These are |
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| 174 | ! the pressures and temperatures at which we have k-coefficients. |
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| 175 | |
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| 176 | !----------------------------------------------------------------------- |
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| 177 | ! pressure |
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| 178 | |
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| 179 | file_id='/corrk_data/' // TRIM(corrkdir) // '/p.dat' |
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| 180 | file_path=TRIM(datadir)//TRIM(file_id) |
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| 181 | |
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| 182 | ! check that the file exists |
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| 183 | inquire(FILE=file_path,EXIST=file_ok) |
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| 184 | if(.not.file_ok) then |
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| 185 | write(*,*)'The file ',TRIM(file_path) |
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| 186 | write(*,*)'was not found by sugas_corrk.F90, exiting.' |
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| 187 | write(*,*)'Check that your path to datagcm:',trim(datadir) |
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| 188 | write(*,*)' is correct. You can change it in callphys.def with:' |
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| 189 | write(*,*)' datadir = /absolute/path/to/datagcm' |
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| 190 | message='Also check that the corrkdir you chose in callphys.def exists.' |
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| 191 | call abort_physic(subname,message,1) |
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| 192 | endif |
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| 193 | |
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| 194 | ! get array size, load the coefficients |
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| 195 | open(111,file=TRIM(file_path),form='formatted') |
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| 196 | read(111,*) L_NPREF |
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| 197 | IF( .NOT. ALLOCATED( pgasref ) ) ALLOCATE( PGASREF(L_NPREF) ) |
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| 198 | read(111,*) pgasref |
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| 199 | close(111) |
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| 200 | L_PINT = (L_NPREF-1)*5+1 |
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| 201 | IF( .NOT. ALLOCATED( pfgasref ) ) ALLOCATE( PFGASREF(L_PINT) ) |
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| 202 | |
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| 203 | ! display the values |
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| 204 | print*,'Correlated-k pressure grid (mBar):' |
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| 205 | do n=1,L_NPREF |
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| 206 | print*,n,'. 1 x 10^',pgasref(n),' mBar' |
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| 207 | end do |
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| 208 | print*,'' |
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| 209 | |
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| 210 | ! save the min / max matrix values |
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| 211 | pgasmin = 10.0**pgasref(1) |
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| 212 | pgasmax = 10.0**pgasref(L_NPREF) |
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| 213 | |
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| 214 | ! interpolate to finer grid, adapted to uneven grids |
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| 215 | do n=1,L_NPREF-1 |
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| 216 | do m=1,5 |
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| 217 | pfgasref((n-1)*5+m) = pgasref(n)+(m-1)*(pgasref(n+1) - pgasref(n))/5. |
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| 218 | end do |
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| 219 | end do |
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| 220 | pfgasref(L_PINT) = pgasref(L_NPREF) |
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| 221 | |
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| 222 | !----------------------------------------------------------------------- |
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| 223 | ! temperature |
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| 224 | |
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| 225 | file_id='/corrk_data/' // TRIM(corrkdir) // '/T.dat' |
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| 226 | file_path=TRIM(datadir)//TRIM(file_id) |
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| 227 | |
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| 228 | ! check that the file exists |
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| 229 | inquire(FILE=file_path,EXIST=file_ok) |
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| 230 | if(.not.file_ok) then |
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| 231 | write(*,*)'The file ',TRIM(file_path) |
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| 232 | write(*,*)'was not found by sugas_corrk.F90, exiting.' |
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| 233 | write(*,*)'Check that your path to datagcm:',trim(datadir) |
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| 234 | write(*,*)' is correct. You can change it in callphys.def with:' |
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| 235 | write(*,*)' datadir = /absolute/path/to/datagcm' |
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| 236 | message='Also check that the corrkdir you chose in callphys.def exists.' |
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| 237 | call abort_physic(subname,message,1) |
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| 238 | endif |
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| 239 | |
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| 240 | ! get array size, load the coefficients |
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| 241 | open(111,file=TRIM(file_path),form='formatted') |
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| 242 | read(111,*) L_NTREF |
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| 243 | IF( .NOT. ALLOCATED( tgasref ) ) ALLOCATE( TGASREF(L_NTREF) ) |
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| 244 | read(111,*) tgasref |
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| 245 | close(111) |
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| 246 | |
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| 247 | ! display the values |
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| 248 | print*,'Correlated-k temperature grid:' |
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| 249 | do n=1,L_NTREF |
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| 250 | print*,n,'.',tgasref(n),' K' |
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| 251 | end do |
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| 252 | |
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| 253 | ! save the min / max matrix values |
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| 254 | tgasmin = tgasref(1) |
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| 255 | tgasmax = tgasref(L_NTREF) |
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| 256 | |
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| 257 | IF( .NOT. ALLOCATED( gasv8 ) ) ALLOCATE( gasv8(L_NTREF,L_NPREF,L_REFVAR,L_NSPECTV,L_NGAUSS) ) |
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| 258 | !$OMP END MASTER |
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| 259 | !$OMP BARRIER |
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| 260 | |
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| 261 | !----------------------------------------------------------------------- |
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| 262 | ! allocate the multidimensional arrays in radcommon_h |
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| 263 | IF( .NOT. ALLOCATED( gasv ) ) ALLOCATE( gasv(L_NTREF,L_PINT,L_REFVAR,L_NSPECTV,L_NGAUSS) ) |
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| 264 | |
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| 265 | ! display the values |
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| 266 | print*,'' |
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| 267 | print*,'Correlated-k matrix size:' |
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| 268 | print*,'[',L_NTREF,',',L_NPREF,',',L_REFVAR,',',L_NGAUSS,']' |
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| 269 | |
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| 270 | !======================================================================= |
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| 271 | ! Get gaseous k-coefficients and interpolate onto finer pressure grid |
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| 272 | |
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| 273 | |
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| 274 | ! wavelength used to separate IR from VI in graybody. We will need that anyway |
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| 275 | IR_VI_wnlimit=3000. |
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| 276 | ! write(*,*)"graybody: Visible / Infrared separation set at",10000./IR_VI_wnlimit,"um" |
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| 277 | |
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| 278 | nVI_limit=0 |
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| 279 | Do nw=1,L_NSPECTV |
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| 280 | if ((WNOV(nw).gt.IR_VI_wnlimit).and.(L_NSPECTV.gt.1)) then |
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| 281 | nVI_limit=nw-1 |
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| 282 | exit |
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| 283 | endif |
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| 284 | End do |
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| 285 | |
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| 286 | kappa_VI=1.e-30 |
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| 287 | kappa_IR=1.e-30 |
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| 288 | |
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| 289 | !$OMP MASTER |
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| 290 | ! print*,corrkdir(1:4) |
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| 291 | ! VISIBLE |
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| 292 | ! if (callgasvis) then |
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| 293 | if ((corrkdir(1:4).eq.'null'))then !(TRIM(corrkdir).eq.'null_LowTeffStar')) then |
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| 294 | gasv8(1:L_NTREF,1:L_NPREF,1:L_REFVAR,1:L_NSPECTV,1:L_NGAUSS)=0.0 |
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| 295 | print*,'using no corrk data' |
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| 296 | print*,'Visible corrk gaseous absorption is set to zero if graybody=F' |
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| 297 | else |
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| 298 | file_id='/corrk_data/'//trim(adjustl(banddir))//'/corrk_gcm_VI.dat' |
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| 299 | file_path=TRIM(datadir)//TRIM(file_id) |
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| 300 | |
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| 301 | ! check that the file exists |
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| 302 | inquire(FILE=file_path,EXIST=file_ok) |
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| 303 | if(.not.file_ok) then |
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| 304 | write(*,*)'The file ',TRIM(file_path) |
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| 305 | write(*,*)'was not found by sugas_corrk.F90.' |
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| 306 | message='Are you sure you have absorption data for these bands?' |
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| 307 | call abort_physic(subname,message,1) |
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| 308 | endif |
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| 309 | |
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| 310 | open(111,file=TRIM(file_path),form='formatted') |
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| 311 | read(111,*) gasv8 |
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| 312 | close(111) |
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| 313 | end if |
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| 314 | |
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| 315 | if(nVI_limit.eq.0) then |
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| 316 | gasv8(1:L_NTREF,1:L_NPREF,1:L_REFVAR,1:L_NSPECTV,1:L_NGAUSS)= & |
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| 317 | gasv8(1:L_NTREF,1:L_NPREF,1:L_REFVAR,1:L_NSPECTV,1:L_NGAUSS)+kappa_VI |
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| 318 | else if (nVI_limit.eq.L_NSPECTV) then |
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| 319 | gasv8(1:L_NTREF,1:L_NPREF,1:L_REFVAR,1:L_NSPECTV,1:L_NGAUSS)= & |
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| 320 | gasv8(1:L_NTREF,1:L_NPREF,1:L_REFVAR,1:L_NSPECTV,1:L_NGAUSS)+kappa_IR |
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| 321 | else |
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| 322 | gasv8(1:L_NTREF,1:L_NPREF,1:L_REFVAR,1:nVI_limit,1:L_NGAUSS)= & |
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| 323 | gasv8(1:L_NTREF,1:L_NPREF,1:L_REFVAR,1:nVI_limit,1:L_NGAUSS)+kappa_IR |
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| 324 | gasv8(1:L_NTREF,1:L_NPREF,1:L_REFVAR,nVI_limit+1:L_NSPECTV,1:L_NGAUSS)= & |
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| 325 | gasv8(1:L_NTREF,1:L_NPREF,1:L_REFVAR,nVI_limit+1:L_NSPECTV,1:L_NGAUSS)+kappa_VI |
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| 326 | end if |
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| 327 | ! else |
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| 328 | ! print*,'Visible corrk gaseous absorption is set to zero.' |
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| 329 | ! gasv8(1:L_NTREF,1:L_NPREF,1:L_REFVAR,1:L_NSPECTV,1:L_NGAUSS)=0.0 |
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| 330 | ! endif |
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| 331 | !$OMP END MASTER |
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| 332 | !$OMP BARRIER |
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| 333 | |
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| 334 | |
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| 335 | ! 'fzero' is a currently unused feature that allows optimisation |
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| 336 | ! of the radiative transfer by neglecting bands where absorption |
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| 337 | ! is close to zero. As it could be useful in the future, this |
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| 338 | ! section of the code has been kept commented and not erased. |
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| 339 | ! RW 7/3/12. |
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| 340 | |
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| 341 | do nw=1,L_NSPECTV |
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| 342 | fzerov(nw) = 0.d0 |
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| 343 | ! do nt=1,L_NTREF |
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| 344 | ! do np=1,L_NPREF |
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| 345 | ! do nh=1,L_REFVAR |
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| 346 | ! do ng = 1,L_NGAUSS |
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| 347 | ! if(gasv8(nt,np,nh,nw,ng).lt.1.0e-25)then |
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| 348 | ! fzerov(nw)=fzerov(nw)+1.d0 |
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| 349 | ! endif |
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| 350 | ! end do |
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| 351 | ! end do |
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| 352 | ! end do |
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| 353 | ! end do |
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| 354 | ! fzerov(nw)=fzerov(nw)/dble(L_NTREF*L_NPREF*L_REFVAR*L_NGAUSS) |
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| 355 | end do |
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| 356 | |
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| 357 | !$OMP MASTER |
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| 358 | |
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| 359 | ! Take log10 of the values - this is what we will interpolate. |
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| 360 | ! Smallest value is 1.0E-200. |
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| 361 | |
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| 362 | do nt=1,L_NTREF |
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| 363 | do np=1,L_NPREF |
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| 364 | do nh=1,L_REFVAR |
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| 365 | do ng = 1,L_NGAUSS |
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| 366 | |
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| 367 | do nw=1,L_NSPECTV |
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| 368 | if(gasv8(nt,np,nh,nw,ng).gt.1.0d-200) then |
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| 369 | gasv8(nt,np,nh,nw,ng) = log10(gasv8(nt,np,nh,nw,ng)) |
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| 370 | else |
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| 371 | gasv8(nt,np,nh,nw,ng) = -200.0 |
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| 372 | end if |
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| 373 | end do |
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| 374 | |
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| 375 | end do |
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| 376 | end do |
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| 377 | end do |
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| 378 | end do |
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| 379 | !$OMP END MASTER |
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| 380 | !$OMP BARRIER |
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| 381 | |
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| 382 | ! Interpolate the values: now the shortwave |
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| 383 | |
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| 384 | do nt=1,L_NTREF |
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| 385 | do nh=1,L_REFVAR |
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| 386 | do nw=1,L_NSPECTV |
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| 387 | do ng=1,L_NGAUSS |
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| 388 | |
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| 389 | ! First, the initial interval |
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| 390 | |
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| 391 | n = 1 |
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| 392 | do m=1,5 |
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| 393 | x = pfgasref(m) |
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| 394 | xi(1) = pgasref(n) |
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| 395 | xi(2) = pgasref(n+1) |
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| 396 | xi(3) = pgasref(n+2) |
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| 397 | xi(4) = pgasref(n+3) |
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| 398 | yi(1) = gasv8(nt,n,nh,nw,ng) |
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| 399 | yi(2) = gasv8(nt,n+1,nh,nw,ng) |
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| 400 | yi(3) = gasv8(nt,n+2,nh,nw,ng) |
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| 401 | yi(4) = gasv8(nt,n+3,nh,nw,ng) |
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| 402 | call lagrange(x,xi,yi,ans) |
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| 403 | gasv(nt,m,nh,nw,ng) = 10.0**ans |
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| 404 | end do |
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| 405 | |
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| 406 | do n=2,L_NPREF-2 |
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| 407 | do m=1,5 |
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| 408 | i = (n-1)*5+m |
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| 409 | x = pfgasref(i) |
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| 410 | xi(1) = pgasref(n-1) |
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| 411 | xi(2) = pgasref(n) |
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| 412 | xi(3) = pgasref(n+1) |
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| 413 | xi(4) = pgasref(n+2) |
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| 414 | yi(1) = gasv8(nt,n-1,nh,nw,ng) |
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| 415 | yi(2) = gasv8(nt,n,nh,nw,ng) |
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| 416 | yi(3) = gasv8(nt,n+1,nh,nw,ng) |
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| 417 | yi(4) = gasv8(nt,n+2,nh,nw,ng) |
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| 418 | call lagrange(x,xi,yi,ans) |
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| 419 | gasv(nt,i,nh,nw,ng) = 10.0**ans |
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| 420 | end do |
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| 421 | end do |
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| 422 | |
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| 423 | ! Now, get the last interval |
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| 424 | |
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| 425 | n = L_NPREF-1 |
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| 426 | do m=1,5 |
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| 427 | i = (n-1)*5+m |
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| 428 | x = pfgasref(i) |
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| 429 | xi(1) = pgasref(n-2) |
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| 430 | xi(2) = pgasref(n-1) |
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| 431 | xi(3) = pgasref(n) |
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| 432 | xi(4) = pgasref(n+1) |
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| 433 | yi(1) = gasv8(nt,n-2,nh,nw,ng) |
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| 434 | yi(2) = gasv8(nt,n-1,nh,nw,ng) |
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| 435 | yi(3) = gasv8(nt,n,nh,nw,ng) |
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| 436 | yi(4) = gasv8(nt,n+1,nh,nw,ng) |
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| 437 | call lagrange(x,xi,yi,ans) |
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| 438 | gasv(nt,i,nh,nw,ng) = 10.0**ans |
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| 439 | end do |
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| 440 | |
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| 441 | ! Fill the last pressure point |
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| 442 | |
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| 443 | gasv(nt,L_PINT,nh,nw,ng) = & |
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| 444 | 10.0**gasv8(nt,L_NPREF,nh,nw,ng) |
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| 445 | |
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| 446 | end do |
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| 447 | end do |
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| 448 | end do |
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| 449 | end do |
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| 450 | |
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| 451 | |
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| 452 | !======================================================================= |
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| 453 | ! Initialise the continuum absorption data |
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| 454 | ! if(continuum)then |
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| 455 | do igas=1,ngasmx |
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| 456 | |
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| 457 | ! For Venus: only H2O, using CKD |
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| 458 | if (igas .eq. igas_H2O) then |
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| 459 | |
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| 460 | ! H2O is special |
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| 461 | ! if(H2Ocont_simple)then |
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| 462 | ! call interpolateH2Ocont_PPC(990.D+0,296.D+0,683.2D+0*2,0.D+0,testcont,.true.) |
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| 463 | ! else |
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| 464 | dummy = -9999 |
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| 465 | call interpolateH2Ocont_CKD(990.D+0,296.D+0,683.2D+0*2,0.D+0,testcont,.true.,dummy) |
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| 466 | ! endif |
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| 467 | |
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| 468 | endif |
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| 469 | |
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| 470 | enddo |
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| 471 | ! endif |
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| 472 | |
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| 473 | ! print*,'----------------------------------------------------' |
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| 474 | ! print*,'And that`s all we have. It`s possible that other' |
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| 475 | ! print*,'continuum absorption may be present, but if it is we' |
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| 476 | ! print*,'don`t yet have data for it...' |
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| 477 | ! print*,'' |
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| 478 | |
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| 479 | ! Deallocate local arrays |
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| 480 | !$OMP BARRIER |
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| 481 | !$OMP MASTER |
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| 482 | IF( ALLOCATED( gasv8 ) ) DEALLOCATE( gasv8 ) |
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| 483 | IF( ALLOCATED( pgasref ) ) DEALLOCATE( pgasref ) |
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| 484 | IF( ALLOCATED( gastype ) ) DEALLOCATE( gastype ) |
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| 485 | !$OMP END MASTER |
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| 486 | !$OMP BARRIER |
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| 487 | |
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| 488 | return |
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| 489 | end subroutine sugas_corrk |
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| 490 | |
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| 491 | !!=================================================================================== |
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| 492 | subroutine lagrange(x, xi, yi, ans) |
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| 493 | |
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| 494 | ! Lagrange interpolation - Polynomial interpolation at point x |
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| 495 | ! xi(1) <= x <= xi(4). Yi(n) is the functional value at XI(n). |
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| 496 | |
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| 497 | implicit none |
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| 498 | |
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| 499 | real*8 x, xi(4), yi(4), ans |
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| 500 | real*8 fm1, fm2, fm3, fm4 |
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| 501 | |
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| 502 | !======================================================================! |
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| 503 | |
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| 504 | fm1 = x - XI(1) |
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| 505 | fm2 = x - XI(2) |
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| 506 | fm3 = x - XI(3) |
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| 507 | fm4 = x - XI(4) |
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| 508 | |
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| 509 | ! Get the answer at the requested X |
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| 510 | |
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| 511 | ans = fm2*fm3*fm4*YI(1)/ & |
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| 512 | ((XI(1)-XI(2))*(XI(1)-XI(3))*(XI(1)-XI(4))) + & |
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| 513 | fm1*fm3*fm4*YI(2)/ & |
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| 514 | ((XI(2)-XI(1))*(XI(2)-XI(3))*(XI(2)-XI(4))) + & |
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| 515 | fm1*fm2*fm4*YI(3)/ & |
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| 516 | ((XI(3)-XI(1))*(XI(3)-XI(2))*(XI(3)-XI(4))) + & |
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| 517 | fm1*fm2*fm3*YI(4)/ & |
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| 518 | ((XI(4)-XI(1))*(XI(4)-XI(2))*(XI(4)-XI(3))) |
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| 519 | |
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| 520 | return |
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| 521 | end |
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