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Experiment Atlantic ERA 63


General Information


Purpose of the Experiment


The purpose of the experiment is the investigation of the sensitivity of the upwelling in the Atlantic eastern boundary currents to the wind- and radiation forcing. Solar radiation is reduced, Bodin formula is used.


Area and time coverage

  • regional model: 10°W - 18°E, 33°S - 8°N
  • initialisation time: 1999,07,20,0,0,0
  • first output time stamp: 1999.07.22
  • last output time stamp: 2009.06.24


Specific information


The model is integrated over about 10 model years. Important parameterisations:
  • solar radiation reduced - using Bodin formula
  • positive mdfl swebe advection
  • kpp vertical mixing scheme
  • additional passive model tracer
  • Manizza shortwave radiation scheme - chlorophyll from satellite data
  • wave model and resuspension of sediments enabled
  • tidal mixing switched on
  • the sea level air pressure does not act onto the ocean


Specific namelist setup


Atmospheric forcing and OBC


  • ERA Interim 6-hourly wind fields
  • ERA interim amosphere temperature, pressure and humidity for heat flux and moisture flux calculation, ERA precipitation
  • ERA interim clouds for short wave radiation
  • baroclinic OBC: 10 day temperature and salinity from ECCO simulations
  • barotropic OBC: 12 hourly sea level from ECCO simulations


Known errors and shortcomings and corrections


  • zmax_pen=800 in ocean_shortwave_gfdl_nml is changed to zmax_pen=1800


Configuration files



Output Variables

xu_ocean ucell longitude
yu_ocean ucell latitude
nv vertex number
xt_ocean tcell longitude
yt_ocean tcell latitude
st_ocean tcell zstar depth
st_edges_ocean tcell zstar depth edges
sw_ocean ucell zstar depth
sw_edges_ocean ucell zstar depth edges
time time
average_T1 Start time for average period
average_T2 End time for average period
average_DT Length of average period
area_t tracer cell area
area_u velocity cell area
ht ocean depth on t-cells
hu ocean depth on u-cells
drag_coeff Dimensionless bottom drag coefficient
dzt t-cell thickness
eta_t surface height on T cells [Boussinesq (volume conserving) model]
eta_u surface height on U cells
eta_t_bar surface height on T cells averaged over bar loop
mld mixed layer depth determined by density criteria
hblt T-cell boundary layer depth from KPP
urhod depth and density weighted u
vrhod depth and density weighted v
runoff mass flux of liquid river runoff entering ocean
windx_wave zonal wind speed for waves
windy_wave meridional wind speed for waves
xmom zonal wave momentum
ymom meridional wave momentum
height significant wave height
wave_p peak frequency
wave_k wave number
wave_s wave skin friction velocity
wave_u wave friction velocity
iter number of ustar iterations
current_wave_stress combined current wave bottom stress
temp Potential temperature
salt Practical Salinity
u zonal velocity
v meridional velocity
wrhot rho*dia-surface velocity T-points
passive_angola passive (angola)
passive_south passive (south)
passive_south1 passive (south1)
passive_north passive (north)
age time after surface contact
time_bounds time axis boundaries



Storage of the results

No /silod2/models/south_atlantic/atlantic_genus_10_era_nobio/workdir_63/



-- MartinSchmidt- 2014-08-26