Dataset
JULES-Peat model outputs simulating the formation and development of the Cuvette Centrale peatlands, Congo Basin (20,000 BP to 60 BP / 18,000 BCE to 1940 CE)
Abstract
This dataset contains model outputs which simulate the formation and development of the Central Congo Basin peatlands. The model used was JULES-Peat, a new version of the Joint UK Land Environment Simulator (JULES), the land surface component of the UK Earth System Model.
Ten simulations were run under conditions representing those in the Central Congo Basin peatlands over the past 20,000 years, introducing new changes to the model in each new simulation. Details of the ten model runs, files used, and code changes can be found in the document Congo_Peat_JULES_runs_details. The files used to run JULES can be found in the Run_JULES_u-an231 directory.
The temporal range of the data is reported in years before present (BP), where present is the year 2000 CE. 20,000 BP to 60 BP is equivalent to 18,000 BCE to 1940 CE.
This dataset has one related publication: "Improving the representation of tropical peatland processes in the JULES land surface model using data from the Central Congo Basin", Cook et al. 2026 (linked in the documentation section).
This dataset was produced as part of the Natural Environment Research Council (NERC) project CongoPeat: Past, Present and Future of the Peatlands of the Central Congo Basin (grant reference: NE/R016860/1). The modelling study was carried out by Peter Anthony Cook at the Global Systems Institute, University of Exeter, Exeter, UK.
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence(s): http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
Data were generated using JULES-Peat, a new version of the Joint UK Land Environment Simulator (JULES), the land surface component of the UK Earth System Model, to simulate the formation and development of the peatlands. |
| Data Quality: |
Model output rather that measured values.
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| File Format: |
NetCDF
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Related Documents
Process overview
| Title | JULES-Peat |
| Abstract | JULES-Peat modifies the peatland scheme in the Joint UK Land Environment Simulator (JULES), the land surface component of the UK Earth System Model. In particular, JULES-Peat changes the vegetation litter composition and the dependence of peat decay on soil moisture. The modifications are informed by field measurements and comparing the simulated peat accumulation and loss over 20,000 years with peat core records, including the “Ghost Interval” period when reduced precipitation starting ~5,000 years before present resulted in significant peat loss. JULES-Peat is driven with a reconstruction of precipitation from peat core proxy data and other meteorological data from a global palaeoclimate model. The original JULES peatland scheme was unable to accumulate the observed quantities of peat or simulate the losses of peat suggested by palaeo records. This updated version of JULES simulates peat increases until 3,000 BP, when reduced precipitation results in substantial loss until 1,000 BP. The JULES-Peat code is available on the Met Office Science Repository Service (requires registration for an account): https://code.metoffice.gov.uk/trac/jules/browser/main/branches/dev/eleanorburke/vn6.2_accumulate_soil |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
- units: kg/m2/360 days
- var_id: n_demand_growth
- long_name: Demand for N for GROWTH of existing plant biomass
- var_id: n_demand_gb
- long_name: Demand for N in total (GBM)
- units: kg/m2/360 DAYS
- units: kg/m2/360 days
- var_id: exudates_gb
- long_name: EXUDATES (GBM): excess C not assimilable into plant due lack of N availability
- units: kg/m2/360 days
- var_id: exudates
- long_name: EXUDATES on PFTs: excess C not assimilable into plant due lack of N availability
- var_id: n_fix_gb
- long_name: Fixed N
- units: kg/m2/360 days
- units: 1
- var_id: frac
- long_name: Fractional cover of each surface type
- units: 1
- var_id: sm_wilt_current
- long_name: Gridbox vol moisture at wilting point for each soil layer: dynamic
- units: 1
- var_id: b_current
- long_name: Gridbox Brooks-Corey exponent for each soil layer: dynamic
- units: :
- var_id: fN
- long_name: Gridbox Nitrogen availability rate modifier
- var_id: soil_CN_gb
- long_name: Gridbox Soil C:N
- units: :
- units: :
- var_id: soil_CN
- long_name: Gridbox Soil C:N in each pool (DPM,RPM,bio,hum)
- units: m
- var_id: depth_frozen
- long_name: Gridbox depth of frozen ground at surface (temperature definition)
- units: m
- var_id: depth_unfrozen_sthf
- long_name: Gridbox depth of unfrozen ground at surface (soil moisture definition)
- units: m
- var_id: depth_unfrozen
- long_name: Gridbox depth of unfrozen ground at surface (temeprature definition)
- var_id: hcap_current
- long_name: Gridbox dry soil heat capacity for each soil layer: dynamic
- units: J K-1 m-3
- units: W m-1 K-1
- var_id: hcon_current
- long_name: Gridbox dry soil thermal conductivity for each soil layer: dynamic
- units: 1
- var_id: sthf
- long_name: Gridbox frozen moisture content of each soil layer as a fraction of saturation
- units: kg m-2 s-1
- var_id: gpp_gb
- long_name: Gridbox gross primary productivity
- units: kg m-2 per 360days
- var_id: lit_c_mean
- long_name: Gridbox mean carbon litter
- units: m
- var_id: zw
- long_name: Gridbox mean depth to water table
- units: kg m-2 per 360days
- var_id: immob_n_gb
- long_name: Gridbox mean potential soil N immobilisation
- units: kg m-2 per 360days
- var_id: minl_n_gb
- long_name: Gridbox mean potential soil N mineralisation
- units: kg m-2
- var_id: cv
- long_name: Gridbox mean vegetation carbon at end of model timestep.
- units: kg m-2
- var_id: smcl
- long_name: Gridbox moisture content of each soil layer
- units: kg m-2 s-1
- var_id: fqw_gb
- long_name: Gridbox moisture flux from surface
- units: kg m-2 s-1
- var_id: npp_gb
- long_name: Gridbox net primary productivity prior to N limitation
- units: kg m-2 s-1
- var_id: resp_p_gb
- long_name: Gridbox plant respiration
- units: kg m-2 s-1
- var_id: satcon_current
- long_name: Gridbox saturated hydraulic conductivity for each soil layer: dynamic
- units: m
- var_id: sathh_current
- long_name: Gridbox saturated soil water pressure for each soil layer: dynamic
- units: kg m-2
- var_id: snow_mass_gb
- long_name: Gridbox snowmass (on land this is lying_snow=snow_tile+snow_grnd)
- var_id: immob_n
- long_name: Gridbox soil Nitrogen immobilisation in each pool (DPM,RPM,bio,hum)
- units: kg m-2 per 360days
- units: kg m-2 per 360days
- var_id: minl_n
- long_name: Gridbox soil Nitrogen mineralisation in each pool (DPM,RPM,bio,hum)
- units: kg m-2
- var_id: cs_gb
- long_name: Gridbox soil carbon (total)
- units: kg m-2
- var_id: cs
- long_name: Gridbox soil carbon in each pool (DPM,RPM,bio,hum)
- units: kg m-2
- var_id: ns_gb
- long_name: Gridbox soil organic Nitrogen (total)
- units: kg m-2
- var_id: ns
- long_name: Gridbox soil organic Nitrogen in each pool (DPM,RPM,bio,hum)
- units: kg m-2 s-1
- var_id: resp_s_gb
- long_name: Gridbox soil respiration (total)
- units: kg m-2 s-1
- var_id: resp_s
- long_name: Gridbox soil respiration from each pool (DPM,RPM,bio,hum)
- units: K
- var_id: t_soil
- long_name: Gridbox sub-surface temperature of each layer
- units: W m-2
- var_id: latent_heat
- long_name: Gridbox surface latent heat flux
- units: W m-2
- var_id: ftl_gb
- long_name: Gridbox surface sensible heat flux
- units: K
- var_id: t1p5m_gb
- long_name: Gridbox temperature at 1.5m height
- units: kg m-2
- var_id: n_inorg_gb
- long_name: Gridbox total N in soil inorganic species
- units: 1
- var_id: sthu
- long_name: Gridbox unfrozen moisture content of each soil layer as a fraction of saturation
- units: 1
- var_id: sm_crit_current
- long_name: Gridbox vol moisture at critical point for each soil layer: dynamic
- units: 1
- var_id: sm_sat_current
- long_name: Gridbox vol moisture content at sat for each soil layer: dynamic
- units: m
- var_id: dz_extra
- long_name: Height of soil column above original surface
- units: kg m-2
- var_id: n_inorg
- long_name: Inorganic N Pool
- var_id: lai_bal
- long_name: LAI in balanced growth state (seasonal maximum LAI)
- units: m2/m2
- var_id: LWdown
- units: Downwelling Longwave Radiation at Surface (W/m2)
- units: kg/m2/s
- var_id: n_leach
- long_name: Leached N Losses
- units: kg/m2/360 days
- var_id: n_uptake_growth
- long_name: N TAKEN UP FOR GROWTH of existing plant biomass
- units: kg/m2/360 days
- var_id: npp_n_gb
- long_name: NPP (GBM) post N-limitation
- units: kg/m2/s
- var_id: deposition_n
- long_name: Nitrogen deposition
- var_id: n_loss
- long_name: Nitrogen loss term (fixed fraction of N_INORG)
- units: kg m-2 360 days
- units: m
- var_id: canht
- long_name: PFT canopy height
- units: kg m-2 s-1
- var_id: gpp
- long_name: PFT gross primary productivity
- units: 1
- var_id: lai
- long_name: PFT leaf area index
- units: kg m-2
- var_id: c_veg
- long_name: PFT total carbon content of the vegetation at the end of model timestep.
- var_id: PSurf
- units: Surface Pressure (Pa)
- units: kg/m2
- var_id: n_veg_gb
- long_name: Plant NITROGEN content (GBM): N_LEAF+N_ROOT+N_WOOD from C equivalents
- units: kg m-2
- var_id: w_pond
- long_name: Ponded water on surface
- var_id: Qair
- units: Specific Humidity (Kg/Kg)
- var_id: Rainf_CRU_cor
- units: Precipitation (Kg/m2/s)
- var_id: SWdown
- units: Downwelling Shortwave Radiation at Surface (W/m2)
- var_id: fch4_wetl
- long_name: Scaled methane flux from wetland fraction (for use in atmos chem)
- units: 10^-9 kg m-2 s-1
- units: m
- var_id: snow_depth_gb
- long_name: Snow depth (on ground)
- var_id: Snowf_CRU_cor
- units: Snowfall (Kg/m2/s)
- units: 1
- var_id: sthzw
- long_name: Soil wetness in deep LSH/TOPMODEL layer
- units: W m-2
- var_id: rad_net
- long_name: Surface net radiation of land points
- units: 1
- var_id: fsat
- long_name: Surface saturated fraction
- var_id: Tair
- units: Air Temperature (K)
- units: K
- var_id: tsoil_deep
- long_name: Temperature in bedrock layers
- units: seconds
- var_id: time_bounds
- long_name: Time bounds for each time stamp
- units: kg/m2/360 days
- var_id: n_uptake_gb
- long_name: Total NITROGEN UPTAKE by plants (GBM)
- units: 1
- var_id: fwetl
- long_name: Wetland fraction at end of model timestep.
- var_id: Wind
- units: Windspeed (m/s)
- var_id: albsoil
- var_id: b
- var_id: canht
- var_id: canopy
- var_id: clay
- var_id: co2_mmr
- units: CO2 Mass Mixing Ratio
- var_id: cs
- var_id: fexp
- var_id: frac
- var_id: frac_agr
- units: kg/m2/360 days
- var_id: n_gas_gb
- long_name: gridbox mean mineralised N Gas Emissions
- var_id: hcap
- var_id: hcon
- var_id: lai
- var_id: latitude
- units: latitude
- var_id: longitude
- units: longitude
- var_id: n_inorg
- var_id: ns
- var_id: nsnow
- var_id: rgrain
- var_id: rgrainl
- var_id: rho_snow
- var_id: satcon
- var_id: sathh
- var_id: sm_crit
- var_id: sm_sat
- var_id: sm_wilt
- var_id: snow_depth
- var_id: snow_ds
- var_id: snow_grnd
- var_id: snow_ice
- var_id: snow_liq
- var_id: snow_tile
- var_id: soilage_max
- var_id: soilcarb_age
- var_id: sthuf
- var_id: sthzw
- var_id: t_soil
- var_id: ti_mean
- var_id: ti_sig
- var_id: time
- units: Year
- var_id: total_N_deposition
- units: Total N Deposition (Kg/m2/s)
- var_id: tsnow
- var_id: tsoil_deep
- var_id: tstar_tile
- units: Year
- var_id: tstep
- long_name: tstep
- var_id: x
- long_name: x
- units: x
- var_id: y
- long_name: y
- units: y
- var_id: zw
Co-ordinate Variables
- units: degrees
- standard_name: latitude
- var_id: latitude
- long_name: Gridbox latitude
- units: degrees
- standard_name: longitude
- var_id: longitude
- long_name: Gridbox longitude
- standard_name: time
- var_id: time
- units: seconds
- long_name: Time of data
Temporal Range
0001-01-01T00:00:00
1940-01-01T00:00:00
Geographic Extent
0.0000° |
||
18.0000° |
18.0000° |
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0.0000° |