Changeset 12894 for NEMO/branches/2020/r4.0-HEAD_r12713_clem_dan_fixcpl/src/ICE/ice.F90

Timestamp:

2020-05-08T15:40:58+02:00 (4 years ago)

Author:

clem

Message:

add parameterization of radiation from Marion Lebrun (2019)

File:

• NEMO/branches/2020/r4.0-HEAD_r12713_clem_dan_fixcpl/src/ICE/ice.F90 (modified) (2 diffs)

NEMO/branches/2020/r4.0-HEAD_r12713_clem_dan_fixcpl/src/ICE/ice.F90

@@ -176 +176 @@
    !                                      !   = 1  Average N(cat) fluxes then redistribute over the N(cat) ice using T-ice and albedo sensitivity
    !                                      !   = 2  Redistribute a single flux over categories
+                                          ! -- icethd_zdf -- !
    LOGICAL , PUBLIC ::   ln_cndflx        !: use conduction flux as surface boundary condition (instead of qsr and qns) 
    LOGICAL , PUBLIC ::   ln_cndemulate    !: emulate conduction flux (if not provided) 
@@ -182 +183 @@
    INTEGER, PUBLIC, PARAMETER ::   np_cnd_ON  = 1  !: forcing from conduction flux (SM0L) (compute qcn and qsr_tr via sbcblk.F90 or sbccpl.F90)
    INTEGER, PUBLIC, PARAMETER ::   np_cnd_EMU = 2  !: emulate conduction flux via icethd_zdf.F90 (BL99) (1st round compute qcn and qsr_tr, 2nd round use it)
-
+   INTEGER, PUBLIC ::   nn_qtrice         !: Solar flux transmitted thru the surface scattering layer:
+   !                                      !   = 0  Grenfell and Maykut 1977 (depends on cloudiness and is 0 when there is snow) 
+   !                                      !   = 1  Lebrun 2019 (equals 0.3 anytime with different melting/dry snw conductivities)
+   !
    !                                     !!** ice-vertical diffusion namelist (namthd_zdf) **
    LOGICAL , PUBLIC ::   ln_cndi_U64      !: thermal conductivity: Untersteiner (1964)
    LOGICAL , PUBLIC ::   ln_cndi_P07      !: thermal conductivity: Pringle et al (2007)
-   REAL(wp), PUBLIC ::   rn_kappa_i       !: coef. for the extinction of radiation Grenfell et al. (2006) [1/m]
    REAL(wp), PUBLIC ::   rn_cnd_s         !: thermal conductivity of the snow [W/m/K]   
+   REAL(wp), PUBLIC ::   rn_kappa_i       !: coef. for the extinction of radiation in sea ice, Grenfell et al. (2006) [1/m]
+   REAL(wp), PUBLIC ::   rn_kappa_s       !: coef. for the extinction of radiation in snw (nn_qtrice=0) [1/m]
+   REAL(wp), PUBLIC ::   rn_kappa_smlt    !: coef. for the extinction of radiation in melt snw (nn_qtrice=1) [1/m]
+   REAL(wp), PUBLIC ::   rn_kappa_sdry    !: coef. for the extinction of radiation in dry  snw (nn_qtrice=1) [1/m]
 
    !                                     !!** ice-salinity namelist (namthd_sal) **