NAM_SEAFLUXn

NAM_SEAFLUXn content

Fortran name	Fortran type	Default value
CSEA_FLUX	CHARACTER(LEN=6)	‘ECUME6’
CSEA_ALB	CHARACTER(LEN=4)	‘TA96’
LPWG	LOGICAL	.FALSE.
LPRECIP	LOGICAL	.FALSE.
LPWEBB	LOGICAL	.FALSE.
LPROGSST	LOGICAL	.FALSE.
XOCEAN_TSTEP	REAL
CINTERPOL_SST	CHARACTER(LEN=6)	‘NONE’
CINTERPOL_SSS	CHARACTER(LEN=6)	‘NONE’
XICHCE	REAL	0.0
CSEA_SFCO2	CHARACTER(LEN=4)	‘NONE’
NGRVWAVES	INTEGER	0
NZ0	INTEGER	0
LPERTFLUX	LOGICAL	.FALSE.
LWAVEWIND	LOGICAL	.TRUE.

• CSEA_FLUX : type of flux computation physics. The following options are currently available:

  • “DIRECT”: direct Charnock computation from Louis [1979]. No effect of convection in the the boundary layer on the fluxes formulae.

  • “ITERAT”: iterative method proposed by Fairall et al. [1996] from TOGA-COARE experiment, amended by Mondon and Redelsperger [1998] to take into account effect of atmospheric convection on fluxes.

  • “COARE3”: the COARE 3.0 iterative method proposed by Fairall et al. [2003].

  • “ECUME “: iterative method proposed by Fairall et al. [1996] from TOGA-COARE experiment, amended by cnrm/memo to take into account effect of atmospheric convection, precipitation and gustiness on fluxes: improvement of surface exchange coefficients representation.

  • “ECUME6 “: to activate new ecumev6

  • “WASPV1”: iterative bulk algorithm based on Fairall et al. [2003] modified to take the wind-sea peak period into account.

• LPWG : correction of fluxes due to gustiness

• LPRECIP : correction of fluxes due to precipitation

• LPWEBB :correction of fluxes due to convection (Webb effect)

• CSEA_ALB : type of albedo formula. The following options are currently available:

  • “UNIF”: a uniform value of 0.135 is used for water albedo

  • “TA96”: Taylor et al. [1996] formula for water direct albedo, depending on solar zenith angle

  • “MK10”: albedo from Marat Khairoutdinov

  • “RS14”: albedo based on Morel and Gentilli 1991 and Salisbury 2014 eq(2)

• LPROGSST : set it to T to make SST evolve with tendency when using the 1d oceanic model

• XOCEAN_TSTEP : timestep for ocean model

• CINTERPOL_SST : interpolate monthly SST to daily SST

  • LINEAR: Linear interpolation between 3 months. Current value is reached every 16 of each month, except in February every 15.

  • UNIF: uniform SST

  • QUADRA: Quadractic interpolation between 3 months, especially relevant to conserve the SST (or other) monthly mean value.

  • READAY: impose directly daily SST

• CINTERPOL_SSS : interpolate monthly Sea Surface Salinity to daily SSS, used by ECUME6 and/or Gelato

  • LINEAR: Linear interpolation between 3 months. Current value is reached every 16 of each month, except in February every 15.

  • UNIF: uniform SSS

  • QUADRA: Quadractic interpolation between 3 months, especially relevant to conserve the SSS monthly mean value.

  • READAY: impose directly daily SSS

• XICHCE : coefficient used in the Ecume formulation (computation of exchange coefficients over sea)

• CSEA_SFCO2 : Empirical CO2 emission from sea surface

  • NONE : no emission

  • WIND : Wanninkhof medium hypothesis using only wind speed as CO2 emission proxy (very empirical)

• NRGVWAVES : Wave gravity in roughness length in coare30_flux

  • 0: no gravity waves action (Charnock)

  • 1: wave age parameterization of Oost et al. [2002]

  • 2: model of Taylor and Yelland [2001]

• NZ0 : to choose PZ0SEA formulation in ECUME6

  • 0: ARPEGE formulation

  • 1: Smith [1988] formulation

  • 2: Direct computation using the stability functions

• LPERTFLUX : True = stochastic flux perturbation of Ecume

• LWAVEWIND : True for wave parameters computed from wind (default), put to False to take Hs or Tp values if initialized in PREP or if coupled.