NAM_LES

This namelist controls the diagnostics of turbulence, especially for Large Eddy Simulations. The diagnostics are saved in the diachronic file (.000).

NAM_LES content

Fortran name

Fortran type

Default value

LLES_MEAN

LOGICAL

.FALSE.

LLES_RESOLVED

LOGICAL

.FALSE.

LLES_SUBGRID

LOGICAL

.FALSE.

LLES_UPDRAFT

LOGICAL

.FALSE.

LLES_DOWNDRAFT

LOGICAL

.FALSE.

LLES_SPECTRA

LOGICAL

.FALSE.

LLES_CS_MASK

LOGICAL

.FALSE.

NLES_LEVELS

INTEGER(:)

all levels in physical domain

XLES_ALTITUDES

REAL(:)

NSPECTRA_LEVELS

INTEGER(:)

XSPECTRA_ALTITUDES

REAL(:)

CLES_NORM_TYPE

CHARACTER(LEN=4)

‘NONE’

CBL_HEIGHT_DEF

CHARACTER(LEN=3)

‘KE ‘

XLES_TEMP_SAMPLING

REAL

60 s if CTURB=’3DIM’

300 s if CTURB=’1DIM’

XLES_TEMP_MEAN_START

REAL

XLES_TEMP_MEAN_END

REAL

XLES_TEMP_MEAN_STEP

REAL

3600 s

LLES_CART_MASK

LOGICAL

.FALSE.

NLES_IINF

INTEGER

1 (physical domain boundary)

NLES_ISUP

INTEGER

NIMAX physical domain boundary)

NLES_JINF

INTEGER

1 (physical domain boundary)

NLES_JSUP

INTEGER

NJMAX (physical domain boundary)

LLES_NEB_MASK

LOGICAL

.FALSE.

LLES_CORE_MASK

LOGICAL

.FALSE.

LLES_MY_MASK

LOGICAL

.FALSE.

NLES_MASKS_USER

INTEGER

NUNDEF

LCOARSEGRAIN

LOGICAL

.FALSE.

NCOARSEGRAIN

INTEGER

1

NSIZECOARSEGRAIN

INTEGER(:)

  • LLES_MEAN : flag for computation of the mean vertical profiles of the model variables

  • LLES_RESOLVED : flag for computation of the mean vertical profiles of the resolved fluxes, variances and covariances

  • LLES_SUBGRID : flag for computation of the mean vertical profiles of the subgrid fluxes, variances and covariances

  • LLES_UPDRAFT : flag for computation of the updraft vertical profiles of some resolved and subgrid fluxes, variances and covariances

  • LLES_DOWNDRAFT : Same as LLES_UPDRAFT but for downdrafts.

  • LLES_SPECTRA : flag for computation of the non-local diagnostics (2 points correlations and spectra)

  • LLES_CS_MASK : flag for computation of the conditional sampling diagnostics

  • NLES_LEVELS : list of model levels in physical domain where the local quantities are computed. Default is: all physical model levels (by default, the vertical profiles are computed on the Meso-NH grid).

  • XLES_ALTITUDES : list of constant altitude levels where the local quantities are computed. Not used by default.

  • NSPECTRA_LEVELS : list of model levels in physical domain where the non-local quantities are computed. Any number is allowed, but too many will be costly in CPU time and memory.

  • XSPECTRA_ALTITUDES : list of constant altitude levels where the non-local quantities are computed. Any number is allowed, but too many will be costly in CPU time and memory.

  • CLES_NORM_TYPE : type of normalization for the fluxes and variances:

    • ‘NONE’: no normalization is computed (however, the quantities necessary to perform these are computed, and stored in the file)

    • ‘CONV’: convective normalization, using \(Q_0\), \(w_*\), h, \(<\overline{w'r'_v}>_{surf}\).

    • ‘EKMA’: Ekman normalization, using \(u_*\) and \(L_{Ekman}\).

    • ‘MOBU’: Monin-Obukhov normalization, using \(L_{MO}\), \(u_*\), \(Q_0\), \(<\overline{w'r'_v}>_{surf}\).

  • CBL_HEIGHT_DEF : definition of the Boundary Layer height h:

    • ‘KE ‘: test on total kinetic energy: \(E(h) + e(h) = 0.05 \frac{1}{h} \int_0^h{(E(z)+e(z))dz}\)

    • ‘WTV’: test on \(<w'\theta'_v + \overline{w'\theta'_v }>\): height h where this flux is most negative.

    • ‘DTH’ : test on \(\theta\) profile.

    • ‘FRI’ : test on the momentum flux, h is the height where the momentum flux is 5% its value at the surface.

  • XLES_TEMP_SAMPLING : time (seconds) between two samplings of the LES profiles and non-local quantities

  • XLES_TEMP_MEAN_START : time (seconds from the beginning of the simulation) at which the averaging begins. If not defined, no averaging is performed.

  • XLES_TEMP_MEAN_END : time (seconds from the beginning of the simulation) at which the averaging ends. If not defined, no averaging is performed.

  • XLES_TEMP_MEAN_STEP : time step (seconds) for averaging.

  • LLES_CART_MASK : flag to compute the LES diagnostics only inside a cartesian subdomain defined with the indexes of the model 1. Both local and non-local quantities can be computed.

  • NLES_IINF : lower i index of the cartesian subdomain in the physical domain. The default value is the physical domain left boundary.

  • NLES_ISUP : upper i index of the cartesian subdomain in the physical domain. The default value is the physical domain right boundary.

  • NLES_JINF : lower j index of the cartesian subdomain in the physical domain. The default value is the physical domain bottom boundary.

  • NLES_JSUP : upper j index of the cartesian subdomain in the physical domain. The default value is the physical domain top boundary.

  • LLES_NEB_MASK : Flag to compute the LES diagnostics separately inside and outside the model columns where clouds are present. Only local quantities can be computed.

  • LLES_CORE_MASK : Flag to compute the LES diagnostics separately inside and outside the model columns where cloud core is present. Only local quantities can be computed.

  • LLES_MY_MASK : Flag to compute the LES diagnostics on a mask defined by the user as a 2D horizontal mask. It must be coded at the beginning of the LES monitor routine. Only local quantities can be computed with this mask.

  • NLES_MASKS_USER : number of user’s masks

  • LCOARSEGRAIN: flag to activate coarse-graining online diagnostics of resolved TKE, turbulent vertical flux of \(r_t\) and \(\theta_l\). Additionnal fluxes terms are saved on if LCONDSAMP=T

  • NCOARSEGRAIN: number of coarse-graining sub-domains

  • NSIZECOARSEGRAIN: dimension sizes in terms of number of points for all coarse-graining sub-domains