| 1 | SUBROUTINE nirco2abs(nlon,nlev,nplay,dist_sol,nq,pq, |
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| 2 | $ mu0,fract,pdtnirco2, |
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| 3 | $ co2vmr_gcm, ovmr_gcm) |
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| 4 | |
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| 5 | use dimphy |
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| 6 | use comgeomphy, only: rlatd, rlond |
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| 7 | c use compo_hedin83_mod2 |
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| 8 | |
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| 9 | |
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| 10 | IMPLICIT NONE |
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| 11 | c======================================================================= |
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| 12 | c subject: |
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| 13 | c -------- |
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| 14 | c Computing heating rate due to |
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| 15 | c absorption by CO2 in the near-infrared |
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| 16 | c This version includes NLTE effects |
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| 17 | c |
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| 18 | c (Scheme to be described in Forget et al., JGR, 2003) |
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| 19 | c (old Scheme described in Forget et al., JGR, 1999) |
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| 20 | c |
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| 21 | c This version updated with a new functional fit, |
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| 22 | c see NLTE correction-factor of Lopez-Valverde et al (1998) |
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| 23 | c Stephen Lewis 2000 |
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| 24 | c |
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| 25 | C jan 2014 g.gilli |
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| 26 | C jun 2013 l.salmi First adaptation to Venus and NIR NLTE param |
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| 27 | c jul 2011 malv+fgg New corrections for NLTE implemented |
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| 28 | c 08/2002 : correction for bug when running with diurnal=F |
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| 29 | c |
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| 30 | c author: Frederic Hourdin 1996 |
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| 31 | c ------ |
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| 32 | c Francois Forget 1999 |
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| 33 | c |
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| 34 | c input: |
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| 35 | c ----- |
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| 36 | c nlon number of gridpoint of horizontal grid |
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| 37 | c nlev Number of layer |
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| 38 | c dist_sol sun-Venus distance (AU) |
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| 39 | c mu0(nlon) |
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| 40 | c fract(nlon) day fraction of the time interval |
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| 41 | c declin latitude of subslar point |
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| 42 | c |
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| 43 | c output: |
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| 44 | c ------- |
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| 45 | c |
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| 46 | c pdtnirco2(nlon,nlev) Heating rate (K/sec) |
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| 47 | c |
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| 48 | c |
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| 49 | c======================================================================= |
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| 50 | c |
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| 51 | c 0. Declarations : |
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| 52 | c ------------------ |
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| 53 | c |
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| 54 | |
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| 55 | !#include "dimensions.h" |
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| 56 | #include "YOMCST.h" |
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| 57 | #include "clesphys.h" |
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| 58 | c#include "comdiurn.h" |
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| 59 | #include "nirdata.h" |
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| 60 | c#include "tracer.h" |
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| 61 | |
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| 62 | c----------------------------------------------------------------------- |
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| 63 | c Input/Output |
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| 64 | c ------------ |
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| 65 | integer,intent(in) :: nlon ! number of (horizontal) grid points |
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| 66 | |
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| 67 | integer,intent(in) :: nlev ! number of atmospheric layers |
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| 68 | real,intent(in) :: nplay(nlon,nlev) ! Pressure |
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| 69 | real,intent(in) :: dist_sol ! Sun-Venus distance (in AU) |
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| 70 | integer,intent(in) :: nq ! number of tracers |
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| 71 | real,intent(in) :: pq(nlon,nlev,nq) ! tracers |
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| 72 | real,intent(in) :: mu0(nlon) ! solar angle |
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| 73 | real,intent(in) :: fract(nlon) ! day fraction of the time interval |
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| 74 | c real,intent(in) :: declin ! latitude of sub-solar point |
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| 75 | |
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| 76 | real co2vmr_gcm(nlon,nlev),ovmr_gcm(nlon,nlev) |
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| 77 | |
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| 78 | real,intent(out) :: pdtnirco2(nlon,nlev) ! heating rate (K/sec) |
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| 79 | |
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| 80 | c |
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| 81 | c Local variables : |
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| 82 | c ----------------- |
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| 83 | INTEGER l,ig, n, nstep,i |
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| 84 | REAL co2heat0, zmu(nlon) |
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| 85 | |
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| 86 | c special diurnal=F |
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| 87 | real mu0_int(nlon),fract_int(nlon),zday_int |
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| 88 | real ztim1,ztim2,ztim3,step |
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| 89 | |
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| 90 | c |
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| 91 | c local saved variables |
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| 92 | c --------------------- |
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| 93 | logical,save :: firstcall=.true. |
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| 94 | integer,save :: ico2=0 ! index of "co2" tracer |
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| 95 | integer,save :: io=0 ! index of "o" tracer |
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| 96 | |
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| 97 | ccc |
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| 98 | c |
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| 99 | c n_a = heating rate for Venusian day at p0, r0, mu =0 [K day-1] |
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| 100 | c Here p0 = p_cloud top [Pa] |
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| 101 | c n_p0 = is a pressure below which non LTE effects are significant [Pa] |
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| 102 | c n_a Solar heating [K/Eday] at the cloud top, taken from Crisps table |
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| 103 | |
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| 104 | real n_a, n_p0, n_b, p_ctop |
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| 105 | |
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| 106 | cc Current values |
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| 107 | parameter (n_a = 18.13/86400.0) !! K/Eday ---> K/sec |
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| 108 | parameter (p_ctop=13.2e2) |
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| 109 | |
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| 110 | c -- NLTE Param v2 -- |
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| 111 | c parameter (n_p0=0.01) |
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| 112 | c parameter (n_b = 1.3) |
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| 113 | |
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| 114 | ccc TESTS |
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| 115 | c parameter (n_a = 18.4/86400.0 *0.6) |
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| 116 | c parameter (p_ctop=63.9e2) |
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| 117 | c parameter (n_p0=0.012) |
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| 118 | c parameter (n_b=1.9628251) |
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| 119 | |
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| 120 | |
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| 121 | c -- NLTE Param v1 -- |
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| 122 | c parameter (n_p0=0.012) |
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| 123 | c parameter (n_b = 1.4) |
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| 124 | |
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| 125 | c -- NLTE Param v3 -- |
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| 126 | |
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| 127 | parameter (n_p0=0.008) |
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| 128 | parameter (n_b = 1.362) |
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| 129 | |
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| 130 | |
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| 131 | c Variables added to implement NLTE correction factor (feb 2011) |
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| 132 | real pyy(nlev) |
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| 133 | real cor1(nlev),oldoco2(nlev),alfa2(nlev) |
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| 134 | real p2011,cociente1,merge |
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| 135 | real cor0,oco2gcm |
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| 136 | |
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| 137 | c co2heat is the heating by CO2 at p_ctop=9.3E03 Pa (cloud top 65 km) for a zero zenithal angle. |
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| 138 | |
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| 139 | co2heat0=n_a*(0.72/dist_sol)**2 |
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| 140 | |
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| 141 | |
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| 142 | CCCCCC TEST: reduce/incrise by 50% nir Heating |
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| 143 | |
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| 144 | c co2heat0 = co2heat0 * 2 |
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| 145 | |
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| 146 | |
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| 147 | c---------------------------------------------------------------------- |
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| 148 | |
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| 149 | c Initialisation |
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| 150 | c -------------- |
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| 151 | c if (firstcall) then |
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| 152 | c if (nircorr.eq.1) then |
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| 153 | cc ! we will need co2 and o tracers |
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| 154 | c ico2= igcm_co2 |
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| 155 | c if (ico2==0) then |
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| 156 | c write(*,*) "nirco2abs error: I need a CO2 tracer" |
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| 157 | c write(*,*) " when running with nircorr==1" |
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| 158 | c stop |
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| 159 | c endif |
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| 160 | c io=igcm_o |
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| 161 | c if (io==0) then |
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| 162 | c write(*,*) "nirco2abs error: I need an O tracer" |
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| 163 | c write(*,*) " when running with nircorr==1" |
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| 164 | c stop |
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| 165 | c endif |
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| 166 | c endif |
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| 167 | c firstcall=.false. |
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| 168 | c endif |
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| 169 | |
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| 170 | |
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| 171 | c |
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| 172 | c Simple calcul for a given sun incident angle (if cycle_diurne=T) |
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| 173 | c -------------------------------------------- |
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| 174 | |
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| 175 | IF (cycle_diurne) THEN |
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| 176 | |
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| 177 | do ig=1,nlon |
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| 178 | zmu(ig)=sqrt(1224.*mu0(ig)*mu0(ig)+1.)/35. |
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| 179 | |
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| 180 | |
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| 181 | if(nircorr.eq.1) then |
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| 182 | do l=1,nlev |
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| 183 | pyy(l)=nplay(ig,l) |
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| 184 | enddo |
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| 185 | |
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| 186 | call interpnir(cor1,pyy,nlev,corgcm,pres1d,npres) |
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| 187 | call interpnir(oldoco2,pyy,nlev,oco21d,pres1d,npres) |
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| 188 | call interpnir(alfa2,pyy,nlev,alfa,pres1d,npres) |
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| 189 | |
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| 190 | endif |
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| 191 | |
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| 192 | do l=1,nlev |
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| 193 | c Calculations for the O/CO2 correction |
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| 194 | if(nircorr.eq.1) then |
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| 195 | cor0=1./(1.+n_p0/nplay(ig,l))**n_b |
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| 196 | if(co2vmr_gcm(ig,l).gt.1.e-6) then |
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| 197 | oco2gcm=ovmr_gcm(ig,l)/co2vmr_gcm(ig,l) |
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| 198 | else |
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| 199 | oco2gcm=1.e6 |
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| 200 | endif |
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| 201 | cociente1=oco2gcm/oldoco2(l) |
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| 202 | merge=alog10(cociente1)*alfa2(l)+alog10(cor0)* |
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| 203 | $ (1.-alfa2(l)) |
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| 204 | merge=10**merge |
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| 205 | p2011=sqrt(merge)*cor0 |
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| 206 | |
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| 207 | else if (nircorr.eq.0) then |
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| 208 | p2011=1. |
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| 209 | cor1(l)=1. |
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| 210 | endif |
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| 211 | |
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| 212 | |
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| 213 | if(fract(ig).gt.0.) pdtnirco2(ig,l)= |
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| 214 | & co2heat0*sqrt((p_ctop*zmu(ig))/nplay(ig,l)) |
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| 215 | & /(1.+n_p0/nplay(ig,l))**n_b |
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| 216 | c Corrections from tabulation |
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| 217 | $ * cor1(l) * p2011 |
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| 218 | |
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| 219 | |
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| 220 | enddo |
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| 221 | enddo |
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| 222 | |
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| 223 | c Averaging over diurnal cycle (if diurnal=F) |
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| 224 | c ------------------------------------------- |
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| 225 | c NIR CO2 abs is slightly non linear. To remove the diurnal |
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| 226 | c cycle, it is better to average the heating rate over 1 day rather |
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| 227 | c than using the mean mu0 computed by mucorr in physiq.F (FF, 1998) |
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| 228 | |
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| 229 | ELSE ! if (.not.diurnal) then |
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| 230 | nstep = 20 ! number of integration step /sol |
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| 231 | do n=1,nstep |
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| 232 | |
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| 233 | zday_int = (n-1)/float(nstep) |
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| 234 | |
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| 235 | CALL zenang(0.,zday_int,RDAY/nstep,rlatd,rlond, |
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| 236 | s mu0_int,fract_int) |
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| 237 | |
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| 238 | do ig=1,nlon |
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| 239 | zmu(ig)=sqrt(1224.*mu0_int(ig)*mu0_int(ig)+1.)/35. |
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| 240 | |
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| 241 | if(nircorr.eq.1) then |
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| 242 | do l=1,nlev |
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| 243 | pyy(l)=nplay(ig,l) |
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| 244 | enddo |
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| 245 | call interpnir(cor1,pyy,nlev,corgcm,pres1d,npres) |
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| 246 | call interpnir(oldoco2,pyy,nlev,oco21d,pres1d,npres) |
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| 247 | call interpnir(alfa2,pyy,nlev,alfa,pres1d,npres) |
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| 248 | endif |
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| 249 | c |
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| 250 | |
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| 251 | do l=1,nlev |
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| 252 | if(nircorr.eq.1) then |
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| 253 | cor0=1./(1.+n_p0/nplay(ig,l))**n_b |
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| 254 | c oco2gcm=ovmr_gcm(ig,l)/co2vmr_gcm(ig,l) |
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| 255 | cociente1 = 1 |
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| 256 | merge=alog10(cociente1)*alfa2(l)+alog10(cor0)* |
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| 257 | $ (1.-alfa2(l)) |
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| 258 | merge=10**merge |
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| 259 | p2011=sqrt(merge)*cor0 |
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| 260 | else if (nircorr.eq.0) then |
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| 261 | p2011=1. |
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| 262 | cor1(l)=1. |
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| 263 | endif |
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| 264 | |
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| 265 | c |
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| 266 | |
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| 267 | if(fract_int(ig).gt.0.) pdtnirco2(ig,l)= |
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| 268 | & pdtnirco2(ig,l) + (1/float(nstep))* |
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| 269 | & co2heat0*sqrt((p_ctop*zmu(ig))/nplay(ig,l)) |
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| 270 | & /(1.+n_p0/nplay(ig,l))**n_b |
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| 271 | ! Corrections from tabulation |
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| 272 | $ * cor1(l) * p2011 |
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| 273 | |
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| 274 | enddo |
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| 275 | enddo |
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| 276 | end do |
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| 277 | |
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| 278 | END IF |
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| 279 | |
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| 280 | return |
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| 281 | end |
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| 282 | |
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| 283 | |
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| 284 | |
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| 285 | subroutine interpnir(escout,p,nlev,escin,pin,nl) |
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| 286 | C |
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| 287 | C subroutine to perform linear interpolation in pressure from 1D profile |
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| 288 | C escin(nl) sampled on pressure grid pin(nl) to profile |
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| 289 | C escout(nlev) on pressure grid p(nlev). |
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| 290 | C |
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| 291 | real escout(nlev),p(nlev) |
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| 292 | real escin(nl),pin(nl),wm,wp |
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| 293 | integer nl,nlev,n1,n,nm,np |
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| 294 | do n1=1,nlev |
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| 295 | if(p(n1) .gt. 1500. .or. p(n1) .lt. 1.0e-13) then |
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| 296 | escout(n1) = 0.0 |
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| 297 | else |
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| 298 | do n = 1,nl-1 |
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| 299 | if (p(n1).le.pin(n).and.p(n1).ge.pin(n+1)) then |
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| 300 | nm=n |
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| 301 | np=n+1 |
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| 302 | wm=abs(pin(np)-p(n1))/(pin(nm)-pin(np)) |
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| 303 | wp=1.0 - wm |
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| 304 | endif |
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| 305 | enddo |
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| 306 | escout(n1) = escin(nm)*wm + escin(np)*wp |
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| 307 | endif |
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| 308 | enddo |
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| 309 | return |
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| 310 | end |
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