9. JULES Output variables

Variables that are available for output from JULES are listed in this section, separated according to their type.

Note

All output is on the full model grid (even for variables defined on land points only).

Any points on the grid for which a variable is not defined with be filled with a missing data value.

Any variables also available on soil tiles are indicated next to their non-soil-tiled analogues, eg var[_soilt].

9.1. Variables that have a single value at each gridpoint (land and sea)

Name Description
con_rain Gridbox convective rainfall (kg m-2 s-1).
con_snow Gridbox convective snowfall (kg m-2 s-1).
cosz Cosine of the zenith angle (-).
diff_frac Gridbox fraction of radiation that is diffuse (-).
ecan_gb Gridbox mean evaporation from canopy/surface store (kg m-2 s-1).
ei_gb Gridbox sublimation from lying snow or sea-ice (kg m-2 s-1).
esoil_gb Gridbox surface evapotranspiration from soil moisture store (kg m-2 s-1).
et_stom_gb Gridbox transpiration (kg m-2 s-1).
fqw_gb Gridbox moisture flux from surface (kg m-2 s-1).
ftl_gb Gridbox surface sensible heat flux (W m-2).
land_albedo_1 Gridbox band 1 albedo (direct beam visible).
land_albedo_2 Gridbox band 2 albedo (diffuse visible).
land_albedo_3 Gridbox band 3 albedo (direct beam NIR).
land_albedo_4 Gridbox band 4 albedo (diffuse NIR).
latent_heat Gridbox surface latent heat flux (W m-2).
ls_rain Gridbox large-scale rainfall (kg m-2 s-1).
ls_snow Gridbox large-scale snowfall (kg m-2 s-1).
lw_down Gridbox surface downward LW radiation (W m-2).
precip Gridbox precipitation rate (kg m-2 s-1).
pstar Gridbox surface pressure (Pa).
q1p5m_gb Gridbox specific humidity at 1.5m height (kg kg-1).
qw1 Gridbox specific humidity (total water content) (kg kg-1).
rainfall Gridbox rainfall rate (kg m-2 s-1).
snomlt_surf_htf Gridbox heat flux used for surface melting of snow (W m-2).
snowfall Gridbox snowfall rate (kg m-2 s-1).
snow_mass_gb Gridbox snowmass (kg m-2).
surf_ht_flux_gb Gridbox net downward heat flux at surface over land and sea-ice fraction of gridbox (W m-2).
sw_down Gridbox surface downward SW radiation (W m-2).
t1p5m_gb Gridbox temperature at 1.5m height (K).
taux1 Gridbox westerly component of surface wind stress (N m-2).
tauy1 Gridbox southerly component of surface wind stress (N m-2).
tauy_gb Gridbox scalar magnitude of surface wind stress (N m-2).
tl1 Gridbox ice/liquid water temperature (K).
tstar_gb Gridbox surface temperature (K).
u1 Gridbox westerly wind component (m s-1).
u10m Gridbox westerly wind component at 10 m height (m s-1).
v1 Gridbox southerly wind component (m s-1).
v10m Gridbox southerly wind component at 10m height (m s-1).
wind Gridbox wind speed (m s-1).

9.2. Variables that have a single value at each land gridpoint

Name Description
albedo_land Gridbox albedo (as used to calculate net shortwave radiation) (-).
apar_gb Gridbox absorbed photosynthetically active radiation (W m-2).
NDVI_land Gridbox NDVI (using sum of direct and diffuse for (NIR-VIS)/(NIR+VIS)).
canopy_gb Gridbox canopy water content (kg m-2).
co2_soil_gb Gridbox C in CO2 flux from soil to atmosphere (kg m-2 s-1). Only available with the ECOSSE soil model (soil_bgc_model = 3).
cs_gb Gridbox total soil carbon (kg m-2).
cv Gridbox mean vegetation carbon at end of model timestep (kg m-2).
c_bio_gb Gridbox soil carbon in biomass pool (kg m-2). Only available if soil_bgc_model = 2 or 3.
c_dpm_gb Gridbox soil carbon in decomposable plant material pool (kg m-2). Only available if soil_bgc_model = 2 or 3.
c_hum_gb Gridbox soil carbon in humus pool (kg m-2). Only available if soil_bgc_model = 2 or 3.
c_rpm_gb Gridbox soil carbon in resistant plant material pool (kg m-2). Only available if soil_bgc_model = 2 or 3.
c_emiss_out Prescribed carbon emissions in IMOGEN (Gt / year). This is one global value repeated over all land points and is only available when IMOGEN is switched on.
d_land_atmos_co2 Change in atmospheric CO2 concentration from land atmosphere CO2 feedbacks in IMOGEN (ppm / year). This is one global value repeated over all land points and is only available when IMOGEN is switched on.
d_ocean_atmos Change in atmospheric CO2 concentration from ocean atmosphere CO2 feedbacks in IMOGEN (ppm / year). This is one global value repeated over all land points and is only available when IMOGEN is switched on.
demand_domestic Demand for water for domestic use (kg). Only available if l_water_domestic = TRUE.
demand_environment Demand for water for environmental use (kg). Only available if l_water_environment = TRUE.
demand_industry Demand for water for industrial use (kg). Only available if l_water_industry = TRUE.
demand_irrigation Demand for water for irrigation (kg). Only available if l_water_irrigation = TRUE.
demand_livestock Demand for water for livestock use (kg). Only available if l_water_livestock = TRUE.
demand_transfers Demand for water for transfers (kg). Only available if l_water_transfers = TRUE.
demand_rate_domestic Demand rate for water for domestic use (kg s-1). Only available if l_water_irrigation = TRUE.
demand_rate_industry Demand rate for water for industrial use (kg s-1). Only available if l_water_industry = TRUE.
demand_rate_livestock Demand rate for water for livestock use (kg s-1). Only available if l_water_livestock = TRUE.
demand_rate_transfers Demand rate for water for transfers (kg s-1). Only available if l_water_transfers = TRUE.
water_demand Demand for water across all water resource sectors (kg). Only available if l_water_resources = TRUE.
deposition_n Nitrogen deposition (kg m-2 s-1).
depth_frozen Gridbox depth of frozen ground at surface defined from soil temperature (m).
depth_frozen_sthf Gridbox depth of frozen ground at surface defined from soil moisture (m). Recommended over depth_frozen except where the soil is very dry.
depth_unfrozen Gridbox depth of unfrozen ground at surface defined from soil temperature (m).
depth_unfrozen_sthf Gridbox depth of unfrozen ground at surface defined from soil moisture (m). Recommended over depth_unfrozen except where the soil is very dry.
dpm_ratio Gridbox DPM:RPM ratio of overall litter input (:).
drain[_soilt] Gridbox drainage at bottom of soil column (kg m-2 s-1).
elake Gridbox mean evaporation from lakes (kg m-2 s-1).
emis_gb Gridbox emissivity.
exudates_gb Gridbox exudates: excess carbon not assimilable into plant due lack of nitrogen (kg m-2 (360days)-1).
fch4_wetl Gridbox scaled methane flux from wetland fraction using soil carbon as substrate if ch4_substrate=1, NPP as substrate if ch4_substrate=2, or soil respiration as substrate if ch4_substrate=3 (10-9 kg m-2 s-1).
fch4_wetl_cs[_soilt] Gridbox methane flux from wetland fraction using soil carbon as substrate (kg m-2 s-1).
fch4_wetl_npp[_soilt] Gridbox methane flux from wetland fraction using NPP as substrate (kg m-2 s-1).
fch4_wetl_resps[_soilt] Gridbox methane flux from wetland fraction using soil respiration as substrate (kg m-2 s-1).
fprf Modifier of soil respiration rate due to vegetation cover (-).
fsat[_soilt] Gridbox surface saturated fraction (-).
fsmc_gb Gridbox soil moisture availability factor (beta) (-).
fwetl[_soilt] Gridbox wetland fraction at end of model timestep (-).
gpp_gb Gridbox gross primary productivity of biomass expressed as carbon (kg m-2 s-1).
gs Gridbox surface conductance to evaporation (m s-1).
hf_snow_melt Gridbox snowmelt heat flux (W m-2).
harvest_gb Gridbox flux of carbon to product pools due to harvest (kg C m-2 (360days)-1).
harvest_n_gb Gridbox flux of nitrogen to atmosphere due to harvest (kg N m-2 (360days)-1).
immob_n_pot_gb Gridbox mean potential soil nitrogen immobilisation (kg m-2 (360days)-1).
immob_n_gb Gridbox mean soil nitrogen immobilisation (kg m-2 (360days)-1).
lai_gb Gridbox leaf area index (-).
land_index Index (gridbox number) of land points.
lice_index Index (gridbox number) of land ice points.
lit_c_mean Gridbox mean carbon litter (kg m-2 (360days)-1).
lit_n_t Gridbox mean total nitrogen litter (kg m-2 (360days)-1).
lw_net Gridbox surface net LW radiation (W m-2).
lw_up Gridbox surface upward LW radiation (W m-2).
minl_n_pot_gb Gridbox mean potential soil nitrogen mineralisation (kg m-2 (360days)-1).
minl_gb Gridbox mean soil nitrogen mineralisation (kg m-2 (360days)-1).
n2_denitrif_gb Gridbox mean N in N2 lost from soil during denitrification (kg m-2 s-1).
n2o_denitrif_gb Gridbox mean N in N2O lost during denitrification (kg m-2 s-1).
n2o_nitrif_gb Gridbox mean N in N2O lost during nitrification, including partial nitrification (kg m-2 s-1).
n2o_part_nitrif_gb Gridbox mean N in N2O lost by partial nitrification (kg m-2 s-1).
n2o_soil_gb Gridbox mean N in N2O flux from soil to atmosphere (kg m-2 s-1).
n_denitrif_gb Gridbox mean rate of denitrification, expressed as N (kg m-2 s-1).
n_nitrif_gb Gridbox mean rate of nitrification, expressed as N (kg m-2 s-1).
no_soil_gb Gridbox mean N in NO flux from soil to atmosphere (kg m-2 s-1).
npp_gb Gridbox net primary productivity of biomass expressed as carbon prior to nitrogen limitation (kg m-2 s-1).
npp_n_gb Gridbox net primary productivity of biomass expressed as carbon after nitrogen limitation (kg m-2 (360days)-1).
ns_gb Gridbox soil organic nitrogen (kg m-2). Only available if soil_bgc_model = 2 or 3.
n_amm_gb Gridbox soil nitrogen in ammonium pool (kg m-2). Only available if soil_bgc_model = 3.
n_bio_gb Gridbox soil nitrogen in biomass pool (kg m-2). Only available if soil_bgc_model = 2 or 3.
n_demand_gb Gridbox mean demand for nitrogen (kg m-2 (360days)-1).
n_dpm_gb Gridbox soil nitrogen in decomposable plant material pool (kg m-2). Only available if soil_bgc_model = 2 or 3.
n_fertiliser_gb Gridbox nitrogen addition from fertiliser (kg N m-2 (360days)-1).
n_fix_gb Gridbox mean nitrogen fixed by plants (kg m-2 (360days)-1).
n_gas_gb Gridbox mean mineralised nitrogen gas emissions (kg m-2 (360days)-1).
n_hum_gb Gridbox soil nitrogen in humus pool (kg m-2). Only available if soil_bgc_model = 2 or 3.
n_inorg_gb Gridbox soil inorganic nitrogen (kg m-2). Only available if soil_bgc_model = 2 or 3.
n_leach Gridbox leached nitrogen loss term (kg N m-2 s-1).
n_loss Gridbox nitrogen loss term (fixed fraction of n_inorg) (kg N m-2 (360days)-1).
n_miner_gb Gribox rate of net mineralisation of soil N (kg m-2 s-1). Only available with the ECOSSE soil model (soil_bgc_model = 3).
n_nit_gb Gridbox soil ammonium in ammonium pool (kg m-2). Only available if soil_bgc_model = 3.
n_rpm_gb Gridbox soil nitrogen in resistant plant material pool (kg m-2). Only available if soil_bgc_model = 2 or 3.
n_soil_gb Gridbox total soil nitrogen (organic and inorganic) (kg m-2). Only available if soil_bgc_model = 2 or 3.
n_uptake_gb Gridbox total nitrogen uptake by plants (kg N m-2 (360days)-1). Only available if soil_bgc_model = 2 or 3.
n_veg_gb Gridbox mean plant nitrogen content: n_leaf+n_root+n_wood from carbon equivalents (kg m-2 ).
plant_input_c_gb Gridbox input of C to the soil by plant litterfall (kg m-2 s-1). Only available with the ECOSSE soil model (soil_bgc_model = 3).
plant_input_n_gb Gridbox input of N to the soil by plant litterfall (kg m-2 s-1). Only available with the ECOSSE soil model (soil_bgc_model = 3).
qbase[_soilt] Gridbox baseflow (lateral subsurface runoff) (kg m-2 s-1), i.e. the sum of surface and subsurface lateral flows from all soil layers (inc. deep LSH/TOPMODEL layer). Only available if l_top = TRUE
qbase_zw[_soilt] Gridbox baseflow (lateral subsurface runoff) from deep LSH/TOPMODEL layer (kg m-2 s-1). Only available if l_top = TRUE
rad_net Surface net radiation (W m-2).
resp_p_gb Gridbox plant respiration carbon flux (kg m-2 s-1).
resp_s_gb Gridbox total soil respiration carbon flux (kg m-2 s-1).
resp_s_to_atmos_gb Respired carbon from soil carbon emitted to atmosphere (kg m-2 s-1).
resp_s_dr_out Gridbox mean soil respiration carbon flux for driving TRIFFID (kg m-2 (360days)-1) This is the gross soil respiration, some of this carbon flux is from one soil carbon pool to another.
root_abandon_gb Carbon from roots abandoned during landuse change to soil kg C m-2 (360days)-1).
root_abandon_n_gb Nitrogen from roots abandoned during landuse change to soil kg N m-2 (360days)-1).
runoff Gridbox runoff rate (kg m-2 s-1).
rflow Gridbox river flow rate (kg m-2 s-1). Only available if l_rivers = TRUE
rrun Gridbox runoff rate received by river routing routine (kg m-2 s-1). Only available if l_rivers = TRUE
frac_fplain_lp Overbank inundation area as a fraction of gridcell area. Only available if l_riv_overbank = TRUE
sat_excess_roff[_soilt] Gridbox saturation excess runoff rate (kg m-2 s-1).
smc_avail_top Gridbox available moisture in surface layer of depth given by zsmc (kg m-2). Calculated using sm_wilt from JULES_SOIL_PROPS.
smc_avail_tot Gridbox available moisture in soil column (kg m-2). Calculated using sm_wilt from JULES_SOIL_PROPS.
smc_tot Gridbox total soil moisture in column (kg m-2).
snomlt_sub_htf Gridbox sub-canopy snowmelt heat flux (W m-2).
snow_can_gb Gridbox snow on canopy (kg m-2).
snow_depth_gb Gridbox depth of snow (m).
snow_frac Gridbox snow-covered fraction of land points (-).
snow_grnd_gb Gridbox average snow beneath canopy (snow_grnd) (kg m-2).
snow_ice_gb Gridbox frozen water in snowpack (kg m-2). Only available if nsmax > 0.
snow_liq_gb Gridbox liquid water in snowpack (kg m-2). Only available if nsmax > 0.
snow_melt_gb Gridbox rate of snowmelt (kg m-2 s-1).
soil_cn_gb Gridbox total soil carbon : nitrogen ratio.
soil_index Index (gridbox number) of soil points.
sthzw[_soilt] Soil wetness in the deep LSH/TOPMODEL layer (-).
sub_surf_roff Gridbox sub-surface runoff (kg m-2 s-1).
surf_roff Gridbox surface runoff (kg m-2 s-1).
swet_liq_tot Gridbox unfrozen soil moisture as fraction of saturation (-).
swet_tot Gridbox soil moisture as fraction of saturation (-).
sw_net Gribox net shortwave radiation at the surface (W m-2).
tfall Gridbox throughfall (kg m-2 s-1).
trad Gridbox effective radiative temperature (K).
zw[_soilt] Gridbox mean depth to water table (m).
isoprene_gb Gridbox mean isoprene emission flux (kg m-2 s-1).
terpene_gb Gridbox mean monoterpene emission flux (kg m-2 s-1).
methanol_gb Gridbox mean methanol emission flux (kg m-2 s-1).
acetone_gb Gridbox mean monoterpene emission flux (kg m-2 s-1).
frac_agr Fractional area of agricultural land in each gridbox. If l_trif_crop is TRUE, frac_agr is the fractional area of crop land in each gridbox.
frac_past Fractional area of pasture land in each gridbox.
co2_mmr Concentration of atmospheric CO2, expressed as a mass mixing ratio.
frac_agr_prev Fractional area of agricultural land at the previous timestep.
wood_prod_fast Carbon content of the fast decay-rate wood product pool (kg m-2).
wood_prod_med Carbon content of the medium decay-rate wood product pool (kg m-2).
wood_prod_slow Carbon content of the slow decay-rate wood product pool (kg m-2).
WP_fast_in Carbon flux from vegetation to the fast decay-rate wood product pool (kg m-2 [360days]-1).
WP_med_in Carbon flux from vegetation to the medium decay-rate wood product pool (kg m-2 [360days]-1).
WP_slow_in Carbon flux from vegetation to the slow decay-rate wood product pool (kg m-2 [360days]-1).
WP_fast_out Carbon flux from the fast decay-rate wood product pool to atmosphere (kg m-2 [360days]-1).
WP_med_out Carbon flux from the medium decay-rate wood product pool to atmosphere (kg m-2 [360days]-1).
WP_slow_out Carbon flux from the slow decay-rate wood product pool to atmosphere (kg m-2 [360days]-1).
irrig_water Irrigation water demand (for l_irrig_dmd = T). (kg m-2 s-1).
fire_mcarthur McArthur Forest Fire Danger Index (No units)
fire_canadian Canadian Fire Weather Index (No units).
fire_canadian_ffmc Canadian Fire Weather Index- Fine Fuel Moisture Code (No units).
fire_canadian_dmc Canadian Fire Weather Index- Duff Moisture Code (No units).
fire_canadian_dc Canadian Fire Weather Index- Drought Code (No units).
fire_canadian_isi Canadian Fire Weather Index- Initial Spread Index (No units).
fire_canadian_bui Canadian Fire Weather Index- Build-up Index (No units).
fire_nesterov Nesterov Fire Index (No units).
cnsrv_carbon_veg2 Error in land carbon conservation in veg2 routine (kg m-2)
cnsrv_carbon_triffid Error in land carbon conservation in triffid routine (kg m-2)
cnsrv_veg_triffid Error in vegetation carbon conservation in triffid routine (kg m-2)
cnsrv_soil_triffid Error in soil carbon conservation in triffid routine (kg m-2)
cnsrv_prod_triffid Error in wood product carbon conservation in triffid routine (kg m-2)
cnsrv_nitrogen_triffd Error in land nitrogen conservation in triffid routine (kg m-2)
cnsrv_vegN_triffid Error in vegetation nitrogen conservation in triffid routine (kg m-2)
cnsrv_soilN_triffid Error in soil nitrogen conservation in triffid routine (kg m-2)
cnsrv_n_inorg_triffid Error in inorganic nitrogen conservation in triffid routine (kg m-2)
burnt_area_gb Gridbox mean burnt area fraction (s-1).
emitted_carbon_gb Gridbox mean emitted carbon flux (kg m-2 s-1).
emitted_carbon_DPM Decomposable Plant Material emitted carbon flux (kg m-2 s-1).
emitted_carbon_RPM Resistant Plant Material emitted carbon flux (kg m-2 s-1).
fire_em_CO2_gb Gridbox mean fire CO2 emission flux (kg m-2 s-1).
fire_em_CO2_DPM Decomposable Plant Material fire CO2 emission flux (kg m-2 s-1).
fire_em_CO2_RPM Resistant Plant Material fire CO2 emission flux (kg m-2 s-1).
fire_em_CO_gb Gridbox mean fire CO emission flux (kg m-2 s-1).
fire_em_CO_DPM Decomposable Plant Material fire CO emission flux (kg m-2 s-1).
fire_em_CO_RPM Resistant Plant Material fire CO emission flux (kg m-2 s-1).
fire_em_CH4_gb Gridbox mean fire CH4 emission flux (kg m-2 s-1).
fire_em_CH4_DPM Decomposable Plant Material fire CH4 emission flux (kg m-2 s-1).
fire_em_CH4_RPM Resistant Plant Material fire CH4 emission flux (kg m-2 s-1).
fire_em_NOx_gb Gridbox mean fire NOx emission flux (kg m-2 s-1).
fire_em_NOx_DPM Decomposable Plant Material fire NOx emission flux (kg m-2 s-1).
fire_em_NOx_RPM Resistant Plant Material fire NOx emission flux (kg m-2 s-1).
fire_em_SO2_gb Gridbox mean fire SO2 emission flux (kg m-2 s-1).
fire_em_SO2_DPM Decomposable Plant Material fire SO2 emission flux (kg m-2 s-1).
fire_em_SO2_RPM Resistant Plant Material fire SO2 emission flux (kg m-2 s-1).
fire_em_OC_gb Gridbox mean fire OC emission flux (kg m-2 s-1).
fire_em_OC_DPM Decomposable Plant Material fire OC emission flux (kg m-2 s-1).
fire_em_OC_RPM Resistant Plant Material fire OC emission flux (kg m-2 s-1).
fire_em_BC_gb Gridbox mean fire BC emission flux (kg m-2 s-1).
fire_em_BC_DPM Decomposable Plant Material fire BC emission flux (kg m-2 s-1).
fire_em_BC_RPM Resistant Plant Material fire BC emission flux (kg m-2 s-1).
fao_et0 FAO Penman-Monteith evapotranspiration for reference crop (kg m-2 s-1)

9.3. Variables that have a value for each PFT at each land gridpoint

Name Description
apar PFT absorbed photosynthetically active radiation (W m-2).
c_veg PFT total carbon content of the vegetation at end of model timestep (kg m-2).
canht PFT canopy height (m).
exudates PFT exudates - excess carbon not assimilable into plant due lack of nitrogen availability (kg C m-2 (360days)-1).
flux_o3_stom PFT flux of O3 to stomata (nmol m-2 s-1).
fsmc PFT soil moisture availability factor (-).
g_leaf PFT leaf turnover rate ([360days]-1).
g_leaf_day PFT mean leaf turnover rate for input to PHENOL ([360days]-1).
g_leaf_dr_out PFT mean leaf turnover rate for driving TRIFFID ([360days]-1).
g_leaf_phen PFT mean leaf turnover rate over phenology period([360days]-1).
gpp PFT gross primary productivity of biomass expressed as carbon (kg m-2 s-1).
harvest flux of carbon to product pools due to harvest (kg C m-2 (360days)-1).
harvest_n flux of nitrogen to atmosphere due to harvest (kg N m-2 (360days)-1).
lai PFT leaf area index (-).
lai_bal PFT balanced leaf area index in sf_stom (-).
lai_phen PFT leaf area index after phenology (-).
leafC PFT carbon in leaf biomass (kg m-2 ).
leaf_litC PFT litter carbon due to leaf turnover (kg m-2 )(360days)-1).
leaf_litN PFT litter nitrogen due to leaf turnover (kg m-2 )(360days)-1).
lit_c PFT carbon litter (kg m-2 (360days)-1).
lit_c_ag PFT carbon litter from LU/agriculture (kg C m-2 (360days)-1).
lit_c_orig PFT carbon litter including LU (kg C m-2 (360days)-1).
lit_n PFT nitrogen litter (kg N m-2 (360days)-1).
lit_n_ag PFT nitrogen loss due to LU/agriculture (kg N m-2 (360days)-1).
litterN PFT local nitrogen litter production (kg N m-2 (360days)-1).
lit_n_orig PFT nitrogen litter including LU (kg N m-2 (360days)-1).
npp_dr_out PFT mean NPP of biomass expressed as carbon for driving TRIFFID (kg m-2 (360days)-1).
npp PFT net primary productivity of biomass expressed as carbon prior to nitrogen limitation (kg m-2 s-1).
npp_n PFT net primary productivity of biomass expressed as carbon after nitrogen limitation (kg m-2 (360days)-1).
n_demand PFT total nitrogen demand (kg m-2 (360 days)-1).
n_demand_growth PFT nitrogen demand for growth of existing plant biomass (kg m-2 (360 days)-1).
n_demand_lit PFT nitrogen demand of litter: nitrogen lost in leaf, wood and root biomass (kg m-2 (360 days)-1).
n_demand_spread PFT nitrogen demand for spreading plants across gridbox (kg m-2 (360 days)-1).
n_fertiliser Nitrogen addition from fertiliser (kg N m-2 (360days)-1).
n_fix PFT fixed nitrogen (kg N m-2 (360days)-1).
n_leaf PFT leaf nitrogen scaled by LAI in sf_stom (kg m-2).
n_root PFT root nitrogen scaled by LAI_BAL in sf_stom (kg m-2).
n_stem PFT stem nitrogen scaled by LAI in sf_stom; scaled by LAI_BAL if l_stem_resp_fix=T (kg m-2).
n_uptake PFT nitrogen taken up by plants (kg m-2 (360 days)-1).
n_uptake_growth PFT nitrogen taken up for growth of existing plant biomass (kg m-2 (360 days)-1).
n_veg PFT plant nitrogen content N_LEAF+N_ROOT+N_WOOD from carbon equivalents (kg m-2).
o3_exp_fac PFT ozone exposure factor.
pc_s PFT net carbon available for spreading in TRIFFID (kg m-2 (360 days)-1).
resp_p PFT plant respiration carbon flux (kg m-2 s-1).
resp_w_dr_out PFT mean wood respiration carbon flux for driving TRIFFID (kg m-2 (360days)-1).
resp_l PFT leaf respiration carbon flux (kg m-2 s-1).
resp_r PFT root respiration carbon flux (kg m-2 s-1).
resp_w PFT wood respiration carbon flux (kg m-2 s-1).
root_abandon PFT carbon flux from roots abandoned during landuse change to soil (kg C m-2 (360days)-1).
root_abandon_n PFT nitrogen flux from roots abandoned during landuse change to soil (kg N m-2 (360days)-1).
root_litC PFT litter carbon due to root turnover (kg m-2 )(360days)-1).
root_litN PFT nitrogen lost as litter due to root turnover (kg m-2 )(360days)-1).
rootC PFT carbon in root biomass (kg m-2 ).
wood_litC PFT litter carbon due to wood turnover (kg m-2 )(360days)-1).
wood_litN PFT litter nitrogen due to wood turnover (kg m-2 )(360days)-1).
woodC PFT carbon in woody biomass (kg m-2 ).
isoprene PFT isoprene emission flux (kg m-2 s-1).
terpene PFT monoterpene emission flux (kg m-2 s-1).
methanol PFT methanol emission flux (kg m-2 s-1).
acetone PFT monoterpene emission flux (kg m-2 s-1).
fapar PFT fraction of absorbed photosynthetically active radiation (-).
burnt_area PFT burnt area fraction (s-1).
emitted_carbon PFT emitted carbon flux (kg m-2 s-1).
fire_em_CO2 PFT fire CO2 emission flux (kg m-2 s-1).
fire_em_CO PFT fire CO emission flux (kg m-2 s-1).
fire_em_CH4 PFT fire CH4 emission flux (kg m-2 s-1).
fire_em_NOx PFT fire NOx emission flux (kg m-2 s-1).
fire_em_SO2 PFT fire SO2 emission flux (kg m-2 s-1).
fire_em_OC PFT fire OC emission flux (kg m-2 s-1).
fire_em_BC PFT fire BC emission flux (kg m-2 s-1).

9.4. Variables that have a value for each PFT and each soil biogeochemistry layer at each land gridpoint

Name Description
n_inorg_avail_pft PFT inorganic nitrogen pool that is available for plant uptake for each soil biogeochemistry layer (kg m-2).

9.5. Variables that have a value for each crop PFT at each land grid point

These variables are only available when ncpft > 0.

Name Description
cropdvi Crop PFT developmental index (DVI).
croprootc Crop PFT root carbon pool (kg m-2).
cropharvc Crop PFT carbon in harvested parts (kg m-2).
cropreservec Crop PFT carbon in stem reserve pool (kg m-2).
croplai Crop PFT leaf area index (LAI).
cropcanht Crop PFT canopy height (m).
cropyield

Crop PFT yield carbon (kg m-2).

cropyield is zero in every timestep where there is no harvest, so this variable will mostly be used with output_type set to ‘A’ or ‘X’.

harvest_counter

1 in a timestep where crop is harvested, 0 otherwise.

When used with output_type = ‘A’, will count the number of harvests since the beginning of the run.

harvest_trigger

Indicates which condition triggered the harvest:

  1. No harvest in timestep.
  2. Crop reached maturity (DVI=2).
  3. Crop leaf area index became too high (LAI>15).
  4. Crop has flowered (DVI>1) and temperature in the second soil layer dropped below t_mort_io.
  5. Crop has flowered (DVI>1), cropharvc > 0 and (croprootc + cropleafc + cropstemc + cropreservec) < initial_carbon_io.
  6. l_prescsow = T, crop has emerged (DVI>=0), and the day of year is the day before the sowing date.
cropstemc Crop PFT carbon in stem parts (kg m-2).
cropleafc Crop PFT carbon in leaf parts (kg m-2).
cropsowdate

PFT sowing date (1.0 to 365.0).

If l_prescsow = FALSE then this will always be 0.

9.6. Variables that have a value for each tile at each land gridpoint

Name Description
alb_tile_1 Tile land albedo, waveband 1 (direct beam visible).
alb_tile_2 Tile land albedo, waveband 2 (diffuse visible).
alb_tile_3 Tile land albedo, waveband 3 (direct beam NIR).
alb_tile_4 Tile land albedo, waveband 4 (diffuse NIR).
anthrop_heat Anthropogenic heat flux for each tile (W m-2).
canopy Tile surface/canopy water for snow-free land tiles (kg m-2).
catch Tile surface/canopy water capacity of snow-free land tiles (kg m-2).
ecan Tile evaporation from canopy/surface store for snow-free land tiles (kg m-2 s-1).
ei Tile sublimation from lying snow for land tiles (kg m-2 s-1).
emis Tile emissivity.
esoil Tile surface evapotranspiration from soil moisture store for snow-free land tile (kg m-2 s-1).
et_stom Tile transpiration (kg m-2 s-1).
tau Tile surface wind stress for land tiles (N m-2).
fqw Tile surface moisture flux for land tiles (kg m-2 s-1).
ftl Tile surface sensible heat flux for land tiles (W m-2).
gc Tile surface conductance to evaporation for land tiles(m s-1).
le Tile surface latent heat flux for land tiles (W m-2).
lw_up_surft Tile upwelling longwave radiation (W m-2).
lw_down_surft Tile downwelling longwave radiation (W m-2).
nsnow Tile number of snow layers (-).
q1p5m Tile specific humidity at 1.5m over land tiles (kg kg-1).
rad_net_tile Tile surface net radiation (W m-2).
rgrain Tile snow surface grain size (μm).
snice_freez_surft Tile internal refreezing rate in snowpack (kg m-2 s-1).
snice_m_surft Tile total internal melt rate of snowpack (kg m-2 s-1).
snice_runoff_surft Tile net rate of liquid leaving snowpack on tiles (kg m-2 s-1).
snice_sicerate_surft Tile rate of change of solid mass in snowpack (kg m-2 s-1).
snice_sliqrate_surft Tile rate of change of liquid in snowpack (kg m-2 s-1).
snice_smb_surft Tile rate of change of snowpack mass (kg m-2 s-1).
snow_can_melt Tile melt of snow on canopy (kg m-2 s-1).
snow_can Tile snow on canopy (kg m-2).
snow_depth Tile snow depth (m).
snow_grnd_rho Tile bulk density of snow on ground (kg m-3).
snow_grnd Tile snow on ground below canopy (kg m-2).
snow_ground Tile snow on ground (snow_tile or snow_grnd depending on configuration) (kg m-2).
snow_ice_tile

Tile total frozen mass in snow on ground (kg m-2).

Only available if nsmax > 0.

snow_liq_tile

Tile total liquid mass in snow on ground (kg m-2).

Only available if nsmax > 0.

snow_mass Tile lying snow (total) (kg m-2).
snow_melt Tile snow melt rate (melt_tile) (kg m-2 s-1).
snow_soil_htf Tile downward heat flux after snowpack to subsurface” (W m-2).
surf_ht_flux Downward heat flux for each tile (W m-2).
surf_ht_store C*(dT/dt) for each tile (W m-2).
sw_net_surft Tile net shortwave radiation (W m-2).
t1p5m Tile temperature at 1.5m over land tiles (K).
tstar Tile surface temperature (K).
tsurf_elev_surft Tile temperature of elevated subsurface tiles (K).
z0 Tile surface roughness (m).

9.7. Variables that have a value for each surface type at each land gridpoint

Name Description
frac Fractional cover of each surface type.
tile_index Index (gridbox number) of land points with each surface type.

9.8. Variables that have a value for each soil level at each land gridpoint

Name Description
b[_soilt] Brooks-Corey exponent for each soil layer (-).
ext[_soilt] Extraction of water from each soil layer (kg m-2 s-1).
fsth Soil moisture modifier of soil respiration rate (-).
ftemp Temperature modifier of soil respiration rate (-).
hcap[_soilt] Dry soil heat capacity (J K-1 m-3) for each soil layer.
hcon[_soilt] Dry soil thermal conductivity (W m-1 K-1) for each soil layer.
satcon[_soilt] Saturated hydraulic conductivity (kg m-2 s-1) for each soil layer.
sathh[_soilt] Saturated soil water pressure (m) for each soil layer.
smcl[_soilt] Moisture content of each soil layer (kg m-2).
soil_wet Total moisture content of each soil layer, as fraction of saturation (-).
sthf[_soilt] Frozen moisture content of each soil layer as a fraction of saturation (-).
sthu[_soilt] Unfrozen moisture content of each soil layer as a fraction of saturation (-).
sthu_irr[_soilt] Unfrozen moisture content of each soil layer as a fraction of saturation in irrigated fraction (-) (only available if l_irrig_dmd = T).
t_soil[_soilt] Sub-surface temperature of each layer (K).
sm_crit[_soilt] | Volumetric moisture content at critical point for each soil layer (-),
as given in JULES_SOIL_PROPS.
sm_sat[_soilt] Volumetric moisture content at saturation for each soil layer (-).
sm_wilt[_soilt] Volumetric moisture content at wilting point for each soil layer (-), as given in JULES_SOIL_PROPS.

9.9. Variables that have a value for each bedrock layer at each land gridpoint

These variables are only available when l_bedrock = TRUE.

Name Description
tsoil_deep Temperature of each bedrock layer (K).

9.10. Variables that have a value for each soil biogeochemistry pool at each soil biogeochemistry layer at each land gridpoint

With the single-pool soil model (soil_bgc_model = 1) there is a single soil carbon pool and a single layer.

If the RothC or ECOSSE models are chosen (soil_bgc_model = 2 or 3) there are 4 soil carbon pools (decomposable plant material, resistant plant material, biomass, humus) for each soil layer.

For RothC, if l_layeredc = TRUE there are sm_levels soil layers (with 4 pools for each), otherwise a single bulk soil layer is used.

For ECOSSE the number of soil layers is dim_cslayer.

Name Description
cs[_soilt] Carbon in each soil pool and each soil biogeochemistry layer (kg m-2).
immob_n Soil nitrogen immobilisation in each soil pool and each soil biogeochemistry layer (kg m-2 (360days)-1).
immob_n_pot Soil potential nitrogen immobilisation in each soil pool and each soil biogeochemistry layer (kg m-2 (360days)-1).
minl_n Soil nitrogen mineralisation in each pool soil pool and each soil biogeochemistry layer (kg m-2 (360days)-1).
minl_n_pot Soil potential nitrogen mineralisation in each pool soil pool and each soil biogeochemistry layer (kg m-2 (360days)-1).
ns Gridbox organic nitrogen in each soil pool and each soil biogeochemistry layer (kg m-2).
resp_s Respiration rate from each soil carbon pool each soil biogeochemistry layer (kg m-2 s-1).
soil_CN Soil C:N in each soil pool and each soil biogeochemistry layer

9.11. Variables that have a value for each soil biogeochemistry layer at each land gridpoint

The number of layers depends on the model set up, as explained in the previous section.

Name Description
c_bio Carbon in biomass pool for each soil biogeochemistry layer (kg m-2). Only available if soil_bgc_model = 2 or 3.
c_dpm Carbon in decomposable plant material pool for each soil biogeochemistry layer (kg m-2). Only available if soil_bgc_model = 2 or 3.
c_hum Carbon in humus pool for each soil biogeochemistry layer (kg m-2). Only available if soil_bgc_model = 2 or 3.
c_rpm Carbon in resistant plant material pool for each soil biogeochemistry layer (kg m-2). Only available if soil_bgc_model = 2 or 3.
clay[_soilt] Clay fraction for each soil biogeochemistry layer (kg/kg).
fN Nitrogen availability rate modifier for each soil biogeochemistry layer.
n_amm Nitrogen in ammonium pool for each soil biogeochemistry layer (kg m-2). Only available if soil_bgc_model = 3.
n_bio Nitrogen in biomass pool for each soil biogeochemistry layer (kg m-2). Only available if soil_bgc_model = 2 or 3.
n_dpm Nitrogen in decomposable plant material pool for each soil biogeochemistry layer (kg m-2). Only available if soil_bgc_model = 2 or 3.
n_gas Mineralised nitrogen gas emissions for each soil biogeochemistry layer (kg m-2 (360days)-1).
n_hum Nitrogen in humus pool for each soil biogeochemistry layer (kg m-2). Only available if soil_bgc_model = 2 or 3.
n_inorg Inorganic nitrogen pool for each soil biogeochemistry layer (kg m-2 ).
n_nit Nitrogen in nitrate pool for each soil biogeochemistry layer (kg m-2). Only available if soil_bgc_model = 3.
n_rpm Nitrogen in resistant plant material pool for each soil biogeochemistry layer (kg m-2). Only available if soil_bgc_model = 2 or 3.
soil_ph[_soilt] Soil pH for each soil biogeochemistry layer. Only available if soil_bgc_model = 3.

9.12. Variables that have a value for each snow layer on each tile at each land gridpoint

These variables are only available when nsmax > 0.

Name Description
rgrainl Grain size in snow layers for each tile (μm).
snow_ds Depth of each snow layer for each tile (m).
snow_ice Mass of ice in each snow layer for each tile (kg m-2).
snow_liq Mass of liquid water in each snow layer for each tile (kg m-2).
tsnow Temperature of each snow layer (K).