Package: gleam 0.8.0

Ahmed Jou

gleam: Global Livestock Environmental Assessment Model (GLEAM-X)

GLEAM-X is the official R implementation of FAO’s Global Livestock Environmental Assessment Model (GLEAM). The package provides a modular, transparent framework for simulating livestock production systems and quantifying their environmental impacts.

Authors:Ahmed Jou [aut, cre], Yassine Elaouni [aut], Dominik Wisser [aut], Lydia Lanzoni [aut], Giuseppe Tempio [aut], Phyllis Ndungu' [ctb], Yushan Li [ctb], Manling Xu [ctb], Zixin Wang [ctb], Narindra Rakotovao [ctb], Stewart Chikoloma [ctb], David OBrien [ctb], Food and Agriculture Organization of the United Nations FAO [cph], Federal Ministry of Agriculture, Food and Regional Identity of Germany BMELH [fnd]

gleam_0.8.0.tar.gz
gleam_0.8.0.zip(r-4.7)gleam_0.8.0.zip(r-4.6)gleam_0.8.0.zip(r-4.5)
gleam_0.8.0.tgz(r-4.6-any)gleam_0.8.0.tgz(r-4.5-any)
gleam_0.8.0.tar.gz(r-4.7-any)gleam_0.8.0.tar.gz(r-4.6-any)
gleam_0.8.0.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
card.svg |card.png
gleam/json (API)
NEWS

# Install 'gleam' in R:
install.packages('gleam', repos = c('https://un-fao.r-universe.dev', 'https://cloud.r-project.org'))

Bug tracker:https://github.com/un-fao/gleam/issues

On CRAN:

Conda:

dpg-candidate

7.18 score 14 stars 5 scripts 477 downloads 71 exports 2 dependencies

Last updated from:90e416197e. Checks:9 OK. Indexed: yes.

TargetResultTimeFilesSyslog
linux-devel-x86_64OK150
source / vignettesOK186
linux-release-x86_64OK149
macos-release-arm64OK232
macos-oldrel-arm64OK223
windows-develOK162
windows-releaseOK149
windows-oldrelOK140
wasm-releaseOK102

Exports:assign_allocation_sharescalc_allocated_emissionscalc_allocation_sharescalc_avg_weightscalc_ch4_entericcalc_ch4_manurecalc_ch4_ration_ricecalc_co2_ration_crop_activitiescalc_co2_ration_fertilizercalc_co2_ration_luc_nopeatcalc_co2_ration_luc_peatcalc_co2_ration_pesticidescalc_co2eqcalc_cohort_to_herd_aggregationcalc_cohort_totalscalc_cohort_weightscalc_conversion_factor_ymcalc_daily_weight_gaincalc_fecundity_ratescalc_feed_digestibility_fractioncalc_fibre_allocation_energycalc_fibre_productioncalc_meat_allocation_energycalc_meat_productioncalc_metabolic_energy_req_activitycalc_metabolic_energy_req_fibrecalc_metabolic_energy_req_growthcalc_metabolic_energy_req_lactationcalc_metabolic_energy_req_maintenancecalc_metabolic_energy_req_pregnancycalc_metabolic_energy_req_workcalc_milk_allocation_energycalc_milk_productioncalc_n2o_manure_directcalc_n2o_manure_leachingcalc_n2o_manure_totalcalc_n2o_manure_volatilizationcalc_n2o_ration_crop_residuescalc_n2o_ration_fertilizercalc_n2o_ration_manurecalc_nitrogen_excretioncalc_nitrogen_intakecalc_nitrogen_retentioncalc_projected_population_sizecalc_ration_ashcalc_ration_digestibilitycalc_ration_gross_energycalc_ration_intakecalc_ration_metabolizable_energycalc_ration_nitrogen_contentcalc_ration_urinary_energy_fractioncalc_reg_growthcalc_rem_maintenancecalc_steady_state_structurecalc_summary_offtakecalc_total_metabolic_energy_reqcalc_transition_probabilitiescalc_volatile_solidscalc_work_allocation_energyrun_aggregation_modulerun_allocation_modulerun_demographic_herd_modulerun_emissions_enteric_modulerun_emissions_manure_modulerun_emissions_ration_modulerun_gleamrun_metabolic_energy_req_modulerun_nitrogen_balance_modulerun_production_modulerun_ration_quality_modulerun_weights_module

Dependencies:clidata.table

About gleam modules

Rendered fromgleam-modules-overview.Rmdusingknitr::rmarkdownon Jun 16 2026.

Last update: 2026-05-14
Started: 2026-03-22

Overview of 'gleam' R Package

Rendered fromgleam-overview.Rmdusingknitr::rmarkdownon Jun 16 2026.

Last update: 2026-05-14
Started: 2026-03-22

The GLEAM Ecosystem

Rendered fromgleam-ecosystem.Rmdusingknitr::rmarkdownon Jun 16 2026.

Last update: 2026-03-22
Started: 2026-03-22

The History of GLEAM

Rendered fromgleam-history.Rmdusingknitr::rmarkdownon Jun 16 2026.

Last update: 2026-03-22
Started: 2026-03-22

Readme and manuals

Help Manual

Help pageTopics
Assign allocation shares to emission variables by commodityassign_allocation_shares
Calculate allocated greenhouse gas emissions (GHG)calc_allocated_emissions
Calculate allocation shares for livestock commoditiescalc_allocation_shares
Calculate average and final live weights by cohortcalc_avg_weights
Calculate daily enteric methane emissionscalc_ch4_enteric
Calculate methane (CH4) emissions from manure management systemscalc_ch4_manure
Calculate a ration component's contribution to methane (CH4) emissions from rice cultivationcalc_ch4_ration_rice
Calculate a ration component's contribution to carbon dioxide (CO2) emissions from on-field agricultural activitiescalc_co2_ration_crop_activities
Calculate a ration component's contribution to carbon dioxide (CO2) emissions from fertilizer manufacturecalc_co2_ration_fertilizer
Calculate a ration component's contribution to carbon dioxide (CO2) emissions from land-use change (excluding peatland drainage)calc_co2_ration_luc_nopeat
Calculate a ration component's contribution to carbon dioxide (CO2) emissions from peatland drainagecalc_co2_ration_luc_peat
Calculate a ration component's contribution to carbon dioxide (CO2) emissions from pesticide manufacturecalc_co2_ration_pesticides
Convert methane (CH4) and nitrous oxide (N2O) emissions to CO2-equivalents (CO2eq) using Global Warming Potentials (GWP) factorscalc_co2eq
Aggregate cohort-level to herd-level datacalc_cohort_to_herd_aggregation
Calculate totals by cohortcalc_cohort_totals
Calculate live weights by cohort and life stagecalc_cohort_weights
Calculate methane conversion factor (ym)calc_conversion_factor_ym
Calculate daily weight gain by cohortcalc_daily_weight_gain
Calculate daily fecundity ratescalc_fecundity_rates
Calculate feed digestibility fractioncalc_feed_digestibility_fraction
Calculate fibre energy requirements (for biophysical allocation)calc_fibre_allocation_energy
Calculate fibre productioncalc_fibre_production
Calculate meat energy requirements (for biophysical allocation)calc_meat_allocation_energy
Calculate meat productioncalc_meat_production
Calculate metabolic energy requirements for activitycalc_metabolic_energy_req_activity
Calculate metabolic energy requirements for fibre productioncalc_metabolic_energy_req_fibre
Calculate metabolic energy requirements for growthcalc_metabolic_energy_req_growth
Calculate metabolic energy requirements for lactationcalc_metabolic_energy_req_lactation
Calculate metabolic energy requirements for maintenancecalc_metabolic_energy_req_maintenance
Calculate metabolic energy requirements for pregnancycalc_metabolic_energy_req_pregnancy
Calculate metabolic energy requirements for workcalc_metabolic_energy_req_work
Calculate milk energy requirements (for biophysical allocation)calc_milk_allocation_energy
Calculate milk productioncalc_milk_production
Calculate direct Nitrous Oxide (N2O) emissions from manure management systemscalc_n2o_manure_direct
Calculate indirect Nitrous Oxide (N2O) emissions from manure leaching and runoffcalc_n2o_manure_leaching
Calculate total Nitrous Oxide (N2O) emissions from manurecalc_n2o_manure_total
Calculate indirect Nitrous Oxide (N2O) emissions from manure volatilizationcalc_n2o_manure_volatilization
Calculate a ration component's contribution to nitrous oxide (N2O) emissions from crop residues decompositioncalc_n2o_ration_crop_residues
Calculate a ration component's contribution to nitrous oxide (N2O) emissions from fertilizer usecalc_n2o_ration_fertilizer
Calculate a ration component's contribution to nitrous oxide (N2O) emissions from manure application and depositioncalc_n2o_ration_manure
Calculate daily nitrogen excretioncalc_nitrogen_excretion
Calculate daily nitrogen intakecalc_nitrogen_intake
Calculate daily nitrogen retentioncalc_nitrogen_retention
Calculate one year of steady-state population dynamicscalc_projected_population_size
Calculate diet ash contribution for a ration componentcalc_ration_ash
Calculate diet digestibility contribution for a ration componentcalc_ration_digestibility
Calculate diet gross energy contribution for a ration componentcalc_ration_gross_energy
Calculate daily ration intake in dry mattercalc_ration_intake
Calculate diet metabolizable energy contribution for a ration componentcalc_ration_metabolizable_energy
Calculate diet nitrogen contribution for a ration componentcalc_ration_nitrogen_content
Calculate urinary energy fraction contribution for a ration componentcalc_ration_urinary_energy_fraction
Calculate the ratio of net energy available for growth in the diet (REG – Net Energy for Growth / Digestible Energy)calc_reg_growth
Calculate ratio of net energy available for maintenance in the diet (REM - Net Energy for Maintenance / Digestible Energy)calc_rem_maintenance
Calculate steady-state population structurecalc_steady_state_structure
Summarise offtake and stock Variation for a steady-state yearcalc_summary_offtake
Calculate total metabolic energy requirementscalc_total_metabolic_energy_req
Calculate transition probabilities for sex-age classescalc_transition_probabilities
Calculate Volatile Solids (VS)calc_volatile_solids
Calculate work energy requirements (for biophysical allocation)calc_work_allocation_energy
Run Aggregation Module Pipelinerun_aggregation_module
Run Allocation Module Pipelinerun_allocation_module
Run Demographic Herd Module Pipelinerun_demographic_herd_module
Run Enteric Methane (CH4) Emissions Module Pipelinerun_emissions_enteric_module
Run Emissions from Manure Module Pipelinerun_emissions_manure_module
Run Emissions from Feed Production Module Pipelinerun_emissions_ration_module
Run the full Global Livestock Environmental Assessment Model (GLEAM) Pipelinerun_gleam
Run Metabolic Energy Requirements and Dry Matter Intake Module Pipelinerun_metabolic_energy_req_module
Run Nitrogen Balance Module Pipelinerun_nitrogen_balance_module
Run Production Module Pipelinerun_production_module
Run Ration Quality Module Pipelinerun_ration_quality_module
Run Weights Module Pipelinerun_weights_module