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Paul Leopardi edited this page Jan 21, 2025 · 41 revisions

Appendix A: Vegetation types used in example files

Number Type
1 Evergreen needleleaf
2 Evergreen broadleaf
3 Deciduous needleleaf
4 Deciduous broadleaf
5 Shrub
6 C3 grass
7 C4 grass
8 Tundra
9 Crop (or C3 crop if veg type 10 used)
10 Not used but set aside for C4 crop
11 Wetland (currently saturated grass)
12 Not used
13 Not used
14 Bare ground
15 Not used but set aside for urban
16 Lakes (currently saturated bare ground)
17 Ice

Appendix B: CABLE parameters

For offline simulations, parameters in the table below need to be set to represent the site(s)/region(s) being simulated. CABLE has “mp” land points/patches and “ms” soil layers. The ranges listed are “physically possible” and mostly correspond to the optional checks in the CABLE offline code. They are mainly found in def_soil_params.txt and def_veg_params.txt or their latest versions. Please note that some of the vegetation parameters are there for historical reasons and are not used any more and are therefore absent in the following table. Please check the cable_common.F90 file where these parameters are read in.

Name type dimension units ranges Description
isoilm int (mp) - 1-30 Soil type
clay real (mp) - 0 - 1 fraction of soil which is clay
sand real (mp) - 0 - 1 fraction of soil which is sand
silt real (mp) - 0 - 1 fraction of soil which is silt
zse real (mp,ms) m currently fixed thickness of each soil layer
froot real (mp,ms) - 0 - 1 fraction of root in each soil layer
betaroot real (mp) - 0 - 1 beta parameter (Jackson et al. 1996) to calc. froot
albsoil real (mp) - 0.0 – 0.9 snow free shortwave soil reflectance (fraction)
bch real (mp) - 2 - 15 parameter b in Campbell equation
css real (mp) J/kg/K 700 - 2200 soil specific heat capacity
hyds real (mp) m/s 5e-7 - 8.5e-4 hydraulic conductivity @ saturation
rhosoil real (mp) kg/m3 300 - 3000 soil bulk density
sfc real (mp) m3/m3 0.1 – 0.5 vol H2O @ field capacity
ssat real (mp) m3/m3 0.35 - 0.5 vol H2O @ saturation
sucs real (mp) m -0.8 - -0.03 suction at saturation
swilt real (mp) m3/m3 0.05 - 0.4 vol H2O @ wilting
iveg int (mp) - 1- 30 Vegetation type
meth int (mp) - currently fixed method for calculation of canopy fluxes and temp
canst1 real (mp) mm/LAI 0.05 - 0.15 max intercepted water by canopy
dleaf real (mp) m 0.005 - 0.4 characteristic length of leaf, calculated from leaf width and length
ejmax real (mp) mol/m2/s 1e-5 - 3e-4 max pot. electron transport rate top leaf, currently double the assigned value of vcmax
frac4 real (mp) - 0 - 1 fraction of c4 plants
hc real (mp) m 0 - 100 height of canopy
rholeaf (refl) real (mp,3) - 0.0 – 0.5 leaf reflectance
tauleaf (taul) real (mp,3) - 0.0 – 0.3 leaf transmittance
shelrb real (mp) - 1 – 3 sheltering factor
vbeta real (mp) - 1 - 20 stomatal sensitivity to soil water
extkn real (mp) - 0 - 10 extinction coefficient for vertical profile of N
vcmax real (mp) mol/m2/s 1e-5 - 3e-4 maximum RuBP carboxylation rate top leaf
xfang real (mp) - -1.0 - 0.5 leaf angle parameter
ratecp real (mp,3) 1/year 0.01 – 3 plant carbon pool rate constant
ratecs real (mp,2) 1/year 0.01 – 3 soil carbon pool rate constant
rp20 real (mp) - 0 -10 plant respiration scaler
rpcoef real (mp) 1/C 0.05-1.5 temperature coef for non-leaf plant respiration
rs20/vegcf real (mp) - 0 -10 can be used [soil respiration scaler]
za real (mp) m 1-150 reference height/measurement height/lowest level of atmospheric model

Appendix C: Variables to be initialized

The following variables are initialized at the start of running CABLE offline, mostly within cable_init_module. The list is especially useful when coupling CABLE to another host model.

canopy%cansto canopy water storage (mm or kg/m2)
ssnow%ssdnn overall snow density (kg/m3)
ssnow%snowd snow liquid water equivalent depth (mm or kg/m2)
ssnow%snage snow age
ssnow%isflag snow layer scheme flag (0 = no or little snow, 1=snow)
ssnow%wbice soil ice - dimension (mp,6)
ssnow%tggsn snow temperature per layer (K) – dimension (mp,3); 3 soil layers
ssnow%ssdn snow density per layer (kg/m3) – dimension (mp,3)
ssnow%smass snow mass per layer (kg/m2) – dimension (mp,3)
ssnow%runoff runoff total = subsurface + surface runoff
ssnow%rnof1 surface runoff (mm/timestepsize)
ssnow%rnof2 deep drainage (mm/timestepsize)
ssnow%rtsoil turbulent resistance for soil
canopy%ga ground heat flux (W/m2)
canopy%dgdtg derivative of ground heat flux wrt soil temp
ssnow%albsoilsn albedo of soil+snow – dimension (mp,3); 3 radiation bands
ssnow%wb soil moisture – dimension (mp,6)
ssnow%tgg soil temperature – dimension (mp,6)

and the following cumulative variables need to be initialised at 0.0:

Type sum_flux% sumpn, sumrp, sumrpw , sumrpr, sumrs, sumrd, dsumpn, dsumrp, dsumrd.
Type bal% :precip_tot, rnoff_tot, evap_tot, wbal_tot, ebal_tot, drybal, wetbal

Appendix D: Output data available for offline simulations

Output from CABLE can be requested for groups of fields (as listed below) or individually by setting the output% variables in cable.nml. For example SWdown will be output if either output%met=.true. or output%SWdown=.true..

output%met

  • SWdown (Downward shortwave – W/m2),
  • LWdown (Downward longwave – W/m2),
  • Rainf (rainfall - mm/s),
  • Tair (Air temperature - K),
  • Qair (spec humidity - kg/kg),
  • Wind (wind speed - m/s),
  • Psurf (surface pressuter - hPa),
  • CO2air (CO2 concentration in atmosphere - ppmv)

output%flux

  • Qle (latent heat – W/m2),
  • Qh (sensible heat – W/m2),
  • Qg (ground heat – W/m2),
  • Qs (surface runoff – mm/s),
  • Qsb (subsurface runoff – mm/s),
  • Evap (total evapotranspiration – mm/s),
  • Ecanop (Wet canopy evaporation – mm/s),
  • Tveg (Vegetation transpiration – mm/s),
  • ESoil (Evaporation from soil – mm/s),
  • HVeg (Sensible heat from vegetation – W/m2),
  • HSoil (Sensible heat from soil – W/m2),
  • NEE (net ecosystem exchange of CO2 - μmol/m 2/s)

output%soil

  • SoilMoist (average soil moisture per layer – kg/m2 ),
  • SoilTemp (average soil temperature per layer – K),
  • BaresoilT (bare soil temperature – K),
  • ESoil (Evaporation from soil – mm/s),
  • HSoil (Sensible heat from soil – W/m2)

output%snow

  • SWE (soil water equivalent – mm or kg/m2),
  • SnowT (snow surface temperature – K),
  • SnowDepth (snow depth - m)

output%radiation

  • SWnet (Net absorbed shortwave radiation – W/m2),
  • LWnet (Net absorbed longwave radiation – W/m2),
  • Rnet (Net absorbed radiation – W/m2),
  • Albedo,
  • RadT (surface radiative temperature - K)

output%veg

  • VegT(average vegetation temperature – K),
  • CanopInt (canopy water storage – mm),
  • LAI (leaf area index),
  • Ecanop (Wet canopy evaporation – mm/s),
  • Tveg (Vegetation transpiration – mm/s),
  • HVeg (Sensible heat from vegetation – W/m2 )

output%balances

  • Ebal (Cumulative energy balance – W/m2)
  • Wbal (Cumulative water balance – mm)

output%carbon

  • NEE (Net Ecosystem Exchange of CO2 – μmol/m2/s),
  • GPP (Gross Primary Production of CO2 – μmol/m2/s),
  • NPP (Net Primary Production of CO2 – μmol/m2/s),
  • AutoResp (plant respiration – μmol/m2/s),
  • HeteroResp (soil respiration – μmol/m2/s)

output%params

  • All CABLE input soil and vegetation parameters

Appendix E: STASH variables used by CABLE

This table lists (in the grey shaded area) the new STASH variables defined for CABLE through the Stashmaster file:accesscollab:~access/umui_jobs/userstash/cable.stash.

These are soil and snow variables which are defined for both layers and tiles. To accommodate the tile dimension, each layer is allocated a separate stash item. Layer numbers increase away from the surface (into the soil or up through the snow layers).

Other listed variables are those already defined for MOSES that CABLE co-opts. Note that the description used in STASH may not always be an accurate description of the CABLE variable that is being output to that STASH number. Some variables have listings in the ‘Prognostic’ section 0 and the ‘Boundary Layer’ section 3 or ‘Hydrology’ section 8.

Some carbon variables are output for all tiles from CABLE (where MOSES only output for vegetated tiles). The stashmaster files sresp.stash and gpp.stash are required for this reason.

Notes(Shaoxiu Ma 4/12/2015): The output variable (SNOW MEAN DENSITY ON TILES) in ACCESS1.4 was moved to section:3, item:831 from section:3,171 in ACCESS1.3. For more details,Please check this file "~access/umui_jobs/userstash/access1.4/cable_800_new.stash".

Peter Vorhalik notes: the inconsistency between STASH-3430 and STASH-3465 given that, on the face of it, these appear to represent the same quantity (one on tiles, the other on grid cells) and might lead to some confusion

Section & Item Section & Item STASH Description CABLE Variable STASH Name
0 301-306 3 141-146 SOIL LAYER 1-6 TEMP ON TILES ssnow%tgg temp_5 to temp_10
0 307-312 3 147-152 SOIL MOISTURE LAYER 1-6 (ON TILES) ssnow%wb temp_11 to temp_16
0 313-318 3 153-158 FROZEN SOIL MOIST FRAC LYR 1-6 (TILES) ssnow%wbice temp_17 to temp_22
0 323-325 3 165-167 SNOW TEMPERATURE LAYER 1-3 (ON TILES) ssnow%tggsn temp_29 to temp_31
0 326-328 3 168-170 SNOW DENSITY LAYER 1-3 (ON TILES) ssnow%ssdn temp_32 to temp_34
0 329 3 171 SNOW MEAN DENSITY (ON TILES) ssnow%ssdnn temp_35
0 330 3 172 SNOW AGE (ON TILES) ssnow%snage temp_36
0 331     FLAG FOR 3 LEVEL SNOW SCHEME (ON TILES) ssnow%isflag
0 332-334 3 159-161 SNOW DEPTH LAYER 1-3 (ON TILES) ssnow%sdepth temp_23 to temp_25
0 335-337 3 162-164 SNOW MASS LAYER 1-3 (ON TILES) ssnow%smass temp_26 to temp_28
0 24 3 24 Surface Temperature After Timestep rad%trad
          canopy%wetfac_cs,
          canopy%fwet,
    3 51 Combined Resistance to Evap rad%transd
    3 217 Surface Heat Flux W/m2 canopy%fh
    3 229 Evap from Soil Surf - Amount kg/m2/TS canopy%fes
    3 234 Surface Latent Heat Flux W/m2 canopy%fe
    3 236 Temperature at 1.5m canopy%tscrn
    3 237 Specific Humidity at 1.5m canopy%qscrn
    3 238 Deep Soil Temperature after B.Layer ssnow%tgg
    3 254 TL at 1.5m canopy%tscrn
    3 255 QT at 1.5m canopy%qscrn
    3 258 Surface Snowmelt Heat Flux W/m2 ssnow%smelt
    3 259 Canopy Conductance m/s canopy%gswx_T
    3 261 Gross Primary Productivity kg C/m2/s canopy%fpn + canopy%frday 1
    3 262 Net Primary Productivity kg C/m2/s canopy%fnpp
    3 263 Plant Respiration kg/m2/s canopy%frp
    3 287 Canopy Evaporation on Tiles canopy%fev
        Transpiration+Soil Evp on Tiles  
    3 288 but currently just soil evaporation canopy%fes
    3 289 Gross Primary Productivity on Tiles canopy%fpn + canopy%frday 1
    3 290 Surface Sensible Heat flux on Tiles canopy%fh
    3 291 Net Primary Productivity on Tiles canopy%fnpp
    3 292 Plant Respiration on Tiles canopy%frp
    3 293 Soil Respiration kg C/m2/s canopy%frs
    3 296 Evap from Soil Surf: rate kg/m2/s canopy%fes
    3 297 Evap from Canopy: rate kg/m2/s canopy%fev
    3 314 Surface Net Radiation on Tiles canopy%rnet
    3 316 Surface Temp on Tiles rad%trad
    3 321 Canopy Water on Tiles kg/m2 canopy%cansto
    3 324 Roughness Length on Tiles (m) rough%z0m
        Leaf turnover rate on pfts  
    3 325 but used for Leaf Respiration on Tiles canopy%frday
    3 326 CO2 land surface flux* canopy%fnee
    3 328 1.5m Temperature over Tiles canopy%tscrn
    3 329 1.5m Specific Humidity over Tiles canopy%qscrn
    3 330 Surface Latent Heat Flux on Tiles canopy%fe
    3 333 Grid Box Average Surf Net Rad canopy%rnet
    3 334 Land Mean Potential Evaporation canopy%epot
    3 335 Potential Evaporation on Tiles canopy%epot
    3 337 Land HT Flux from Surf to Deep Lev 1 canopy%ga
    3 341 Land Mean Temperature at 1.5m canopy%tscrn
    3 342 Land Mean Specific Humidity at 1.5m canopy%qscrn
    3 430 Dust Friction Velocity (U*) on Tiles canopy%us
0 23 8 23 Snow Mass after Hydrology kg/m2 ssnow%snowd
    8 201 Land Snow Melt Amount kg/m2/ts ssnow%smelt
    8 202 Land Snow Melt Heat Flux w/m2 ssnow%smelt
    8 204 Sfc Runoff Amount: Land Mean kg/m2/ts ssnow%rnof1
    8 205 Sub-Sfc Runoff Amt:Land Mn kg/m2/ts ssnow%rnof2
    8 209 Canopy Water Content canopy%cansto field271
    8 223 Soil Moisture Content in a Layer ssnow%wb sm
    8 225 Deep Soil Temp after Hydrology degk ssnow%tgg soiltemp
    8 229 Unfrozen Soil Moisture Fraction ssnow%wb-ssnow%wbice
    8 230 Frozen Soil Moisture Fraction ssnow%wbice
    8 231 Land Snow Melt kg/m2/s ssnow%smelt
    8 233 Canopy Throughfall Rate kg/m2/s caopy%through
    8 234 Surface Runoff Rate kg/m2/s ssnow%rnof1
    8 235 Sub-Surface Runoff Rate kg/m2/s ssnow%rnof2
    8 236 Snow Amount on Tiles kg/m2 ssnow%snowd
    8 237 Snow Melt Rate on Tiles kg/m2/s ssnow%smelt

1: If namelist variable LEAF_RESPIRATION=’on’ only canopy%fpn is written into the GPP variables

== ACCESS-ESM1.5 STASH variables The previous table is for older version of ACCESS. ACCESS-ESM1.5 has some tile-based variables listed as UNKNOWN VARIABLE in the NetCDF output. These are section 3 items 8?? and contain the new CASA-CNP variables, among other things. They are listed here for future reference.

ACCESS .nc Variable Name Section Item Description
fld_s03i801 3 801 SOIL LAYER 1 TEMPERATURE ON TILES
fld_s03i802 3 802 SOIL LAYER 2 TEMPERATURE ON TILES
fld_s03i803 3 803 SOIL LAYER 3 TEMPERATURE ON TILES
fld_s03i804 3 804 SOIL LAYER 4 TEMPERATURE ON TILES
fld_s03i805 3 805 SOIL LAYER 5 TEMPERATURE ON TILES
fld_s03i806 3 806 SOIL LAYER 6 TEMPERATURE ON TILES
fld_s03i807 3 807 SOIL MOISTURE LAYER 1 (ON TILES)
fld_s03i808 3 808 SOIL MOISTURE LAYER 2 (ON TILES)
fld_s03i809 3 809 SOIL MOISTURE LAYER 3 (ON TILES)
fld_s03i810 3 810 SOIL MOISTURE LAYER 4 (ON TILES)
fld_s03i811 3 811 SOIL MOISTURE LAYER 5 (ON TILES)
fld_s03i812 3 812 SOIL MOISTURE LAYER 6 (ON TILES)
fld_s03i813 3 813 FROZEN SOIL MOIST FRAC LYR 1 (TILES)
fld_s03i814 3 814 FROZEN SOIL MOIST FRAC LYR 2 (TILES)
fld_s03i815 3 815 FROZEN SOIL MOIST FRAC LYR 3 (TILES)
fld_s03i816 3 816 FROZEN SOIL MOIST FRAC LYR 4 (TILES)
fld_s03i817 3 817 FROZEN SOIL MOIST FRAC LYR 5 (TILES)
fld_s03i818 3 818 FROZEN SOIL MOIST FRAC LYR 6 (TILES)
fld_s03i819 3 819 SNOW DEPTH LAYER 1 (ON TILES)
fld_s03i820 3 820 SNOW DEPTH LAYER 2 (ON TILES)
fld_s03i821 3 821 SNOW DEPTH LAYER 3 (ON TILES)
fld_s03i822 3 822 SNOW MASS LAYER 1 (ON TILES
fld_s03i823 3 823 SNOW MASS LAYER 2 (ON TILES
fld_s03i824 3 824 SNOW MASS LAYER 3 (ON TILES
fld_s03i825 3 825 SNOW TEMPERATURE LAYER 1 (ON TILES)
fld_s03i826 3 826 SNOW TEMPERATURE LAYER 2 (ON TILES)
fld_s03i827 3 827 SNOW TEMPERATURE LAYER 3 (ON TILES)
fld_s03i828 3 828 SNOW DENSITY LAYER 1 (ON TILES)
fld_s03i829 3 829 SNOW DENSITY LAYER 2 (ON TILES)
fld_s03i830 3 830 SNOW DENSITY LAYER 3 (ON TILES)
fld_s03i831 3 831 SNOW MEAN DENSITY (ON TILES)
fld_s03i832 3 832 SNOW AGE (ON TILES)
fld_s03i835 3 835 PREVIOUS YEAR SURF FRACTIONS (TILES)
fld_s03i851 3 851 CARBON POOL LABILE ON TILES
fld_s03i852 3 852 CARBON POOL PLANT - LEAF ON TILES
fld_s03i853 3 853 CARBON POOL PLANT - WOOD ON TILES
fld_s03i854 3 854 CARBON POOL PLANT - ROOT ON TILES
fld_s03i855 3 855 CARBON POOL LITTER - METB ON TILES
fld_s03i856 3 856 CARBON POOL LITTER - STR ON TILES
fld_s03i857 3 857 CARBON POOL LITTER - CWD ON TILES
fld_s03i858 3 858 CARBON POOL SOIL - MIC ON TILES
fld_s03i859 3 859 CARBON POOL SOIL - SLOW ON TILES
fld_s03i860 3 860 CARBON POOL SOIL - PASS ON TILES
fld_s03i861 3 861 NITROGEN POOL PLANT - LEAF ON TILES
fld_s03i862 3 862 NITROGEN POOL PLANT - WOOD ON TILES
fld_s03i863 3 863 NITROGEN POOL PLANT - ROOT ON TILES
fld_s03i864 3 864 NITROGEN POOL LITTER - METB ON TILES
fld_s03i865 3 865 NITROGEN POOL LITTER - STR ON TILES
fld_s03i866 3 866 NITROGEN POOL LITTER - CWD ON TILES
fld_s03i867 3 867 NITROGEN POOL SOIL - MIC ON TILES
fld_s03i868 3 868 NITROGEN POOL SOIL - SLOW ON TILES
fld_s03i869 3 869 NITROGEN POOL SOIL - PASS ON TILES
fld_s03i870 3 870 NITROGEN POOL SOIL MINIMUM (TILES)
fld_s03i871 3 871 PHOSPHORUS POOL PLANT - LEAF (TILES)
fld_s03i872 3 872 PHOSPHORUS POOL PLANT - WOOD (TILES
fld_s03i873 3 873 PHOSPHORUS POOL PLANT - ROOT (TILES)
fld_s03i874 3 874 PHOSPHORUS POOL LITTER- METB (TILES)
fld_s03i875 3 875 PHOSPHORUS POOL LITTER - STR (TILES)
fld_s03i876 3 876 PHOSPHORUS POOL LITTER - CWD (TILES)
fld_s03i877 3 877 PHOSPHORUS POOL SOIL - MIC (TILES
fld_s03i878 3 878 PHOSPHORUS POOL SOIL - SLOW (TILES)
fld_s03i879 3 879 PHOSPHORUS POOL SOIL - PASS (TILES
fld_s03i880 3 880 PHOSPHORUS POOL SOIL LABILE (TILES)
fld_s03i881 3 881 PHOSPHORUS POOL SOIL SORB ON TILES
fld_s03i882 3 882 PHOSPHORUS POOL SOIL OCC ON TILES
fld_s03i884 3 884 NITROGEN DEPOSITION
fld_s03i885 3 885 NITROGEN FIXATION
fld_s03i893 3 893 LEAF AREA INDEX (CASA-CNP GLAI)
fld_s03i895 3 895 WOOD FLUX CARBON    (CASA-CNP)
fld_s03i896 3 896 WOOD FLUX NITROGEN    (CASA-CNP)
fld_s03i897 3 897 WOOD FLUX PHOSPHOR    (CASA-CNP)
fld_s03i898 3 898 WOOD HARVEST CARBON1(CASA-CNP)
fld_s03i899 3 899 WOOD HARVEST CARBON2(CASA-CNP)
fld_s03i900 3 900 WOOD HARVEST CARBON3(CASA-CNP)
fld_s03i901 3 901 WOOD HARVEST NITROG1(CASA-CNP)
fld_s03i902 3 902 WOOD HARVEST NITROG2(CASA-CNP)
fld_s03i903 3 903 WOOD HARVEST NITROG3(CASA-CNP)
fld_s03i904 3 904 WOOD HARVEST PHOSPH1(CASA-CNP)
fld_s03i905 3 905 WOOD HARVEST PHOSPH2(CASA-CNP)
fld_s03i906 3 906 WOOD HARVEST PHOSPH3(CASA-CNP)
fld_s03i907 3 907 WOOD RESPIRA CARBON1(CASA-CNP
fld_s03i908 3 908 WOOD RESPIRA CARBON2(CASA-CNP)
fld_s03i909 3 909 WOOD RESPIRA CARBON3(CASA-CNP)
fld_s03i910 3 910 WOOD RESPIRA NITROG1(CASA-CNP)
fld_s03i911 3 911 WOOD RESPIRA NITROG2(CASA-CNP)
fld_s03i912 3 912 WOOD RESPIRA NITROG2(CASA-CNP)
fld_s03i913 3 913 WOOD RESPIRA PHOSPH1(CASA-CNP)
fld_s03i914 3 914 WOOD RESPIRA PHOSPH2(CASA-CNP)
fld_s03i915 3 915 WOOD RESPIRA PHOSPH3(CASA-CNP)
fld_s03i916 3 916 THIN RATIO FOR FOREST (CASA-CNP)
fld_s03i917 3 917 NITROGEN NET RELEASE (CASA-CNP)
fld_s03i918 3 918 NITROGEN LEACHING (CASA-CNP)
fld_s03i919 3 919 NITROGEN UPTAKE (CASA-CNP)
fld_s03i920 3 920 NITROGEN LOSS (CASA-CNP)

Appendix F: Example netcdf header of meteorological forcing file with land compression

dimensions:
    tstep = UNLIMITED ; // (1461 currently)
    land = 15238 ;
    y = 180 ;
    x = 360 ;
variables:
    float SWdown(tstep, land) ;
        SWdown:axis = "TYX" ;
        SWdown:units = "W/m^2" ;
        SWdown:long_name="Surface incident shortwave radiation" ;
        SWdown:associate = "time (nav_lat nav_lon)" ;
        SWdown:missing_value = 1.e+20f ;
    int land(land) ;
        land:compress = "y x" ;
    float nav_lat(y, x) ;
        nav_lat:units = "degrees_north" ;
        nav_lat:valid_min = -90.f ;
        nav_lat:valid_max = 90.f ;
        nav_lat:long_name = "Latitude" ;
    float nav_lon(y, x) ;
        nav_lon:units = "degrees_east" ;
        nav_lon:valid_min = -180.f ;
        nav_lon:valid_max = 180.f ;
        nav_lon:long_name = "Longitude" ;
    float time(tstep) ;
        time:units = "seconds since 1949-01-01 00:00:00" ;
        time:title = "Time" ;
        time:long_name = "Time axis" ;
        time:time_origin = " 1949-JAN-01 00:00:00" ;

Most of the variables will be structured as SWdown is above. The relationship between “land” and “x” and “y” inside the CABLE netcdf driver is:

y = INT((landGrid(j)-1)/xdimsize)
x = landGrid(j) - y * xdimsize
y=y+1
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