Experiment Atlantic NCEP 4
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: 2003.11.26
- last output time stamp: 2005.02.18
Specific information
The model is integrated over about 1 model years. Important parameterisations:
- 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
- NCEP high resolution 6-hourly surface data (one hour forecast)
- NCEP winds replaced by CCMP winds
- NCEP radiation replaced by BODIN 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
- [[%ATTACHURL%/input.nml][input.nml]]: input.nml
- [[%ATTACHURL%/data_table][data_table]]: data_table
- [[%ATTACHURL%/field_table][field_table]]: field_table
- [[%ATTACHURL%/diag_table][diag_table]]: diag_table
Output Variables
| xu_ocean | ucell longitude |
| yu_ocean | ucell latitude |
| time | time |
| 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 |
| drag_coeff | Dimensionless bottom drag coefficient |
| geolon_t | tracer longitude |
| geolat_t | tracer latitude |
| geolon_c | uv longitude |
| geolat_c | uv latitude |
| area_t | tracer cell area |
| area_u | velocity cell area |
| ht | ocean depth on t-cells |
| hu | ocean depth on u-cells |
| 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 | i-current |
| v | j-current |
| wrhot | rho*dia-surface velocity T-points |
| passive_angola | passive (angola) |
| passive_south | passive (south) |
| passive_south1 | passive (south1) |
| passive_north | passive (north) |
| age_global | Age (global) |
| average_T1 | Start time for average period |
| average_T2 | End time for average period |
| average_DT | Length of average period |
| time_bounds | time axis boundaries |
Storage of the results
| PERM at HLRN | IOW storage | THREDDS |
| No | /silod2/models/south_atlantic/atlantic_genus_10_ncep_nobio/workdir_4/ | http://phy-50.io-warnemuende.de:8080/thredds/PREFACE/catalog_ncep_highres_run4.html |
http://phy-50.io-warnemuende.de:8080/thredds/genus/catalog_ncep_run1.html
-- Main.MartinSchmidt - 2014-08-26