16.2.28. Kilpatrick

The purpose of this ktest is to simulate the response of the Atmospheric Boundary Layer 1d (ABL1d) model to a 2-dimensional (x-z) SST front. This ktest is based on Kilpatrick et al. [2014] case study (see also Lemarié et al. [2021], Spall [2007], Ayet and Redelsperger [2019]).

Description of the ABL1d model can be found in Lemarié et al. [2021]. Same version of the ABL1d model described in this paper has been implemented in CROCO.

Settings :

# define KILPATRICK

CPP options (cppdefs.h) :

#elif defined KILPATRICK
/*
!                       KILPATRICK  Example
!                       ==========  =======
*/
# define MPI
# define AVERAGES
# define NONLIN_EOS
# define SOLVE3D
# define ANA_GRID
# define ANA_INITIAL
# define ANA_SMFLUX
# define ANA_STFLUX
# define ANA_BTFLUX
# define NO_FRCFILE
# define ABL1D
# ifdef  ABL1D
#  define BULK_FLUX
#  undef  BULK_ECUMEV0
#  undef  BULK_ECUMEV6
#  define BULK_GUSTINESS
#  define ANA_ABL_LSDATA
#  define ANA_ABL_VGRID
#  define STRESS_AT_RHO_POINTS
#  undef  ABL_NUDGING
#  undef  ABL_NUDGING_DYN
#  undef  ABL_NUDGING_TRA
#  undef  ABL_DYN_RESTORE_EQ
#  undef  SFLUX_CFB
# else
#  undef BULK_FLUX
# endif

Warning

It’s mandatory to use BULK_FLUX when ABL1D is activated. The file cppdefs_dev.h has been modified accordingly :

======================================================================
   ABL1D option
======================================================================
!
! Using BULK_FLUX is mandatory whenever ABL1D is activated.
!
*/
#ifdef ABL1D
# define BULK_FLUX
#endif

Results :

Cold-to-warm case of Kilpatrick - sensitivity to bulk parametrizations