string | description ------ | ----------- .melt | refers to a molten data frame (all data under a single column) A | indicates an assumption acr | acre addl | additional adj | adjusted from original data table of the same name adv | advanced scenario AEZ | by AEZ (agro-ecological zone) ag | agricultural product agg | aggregated from original categories agg | aggregate, as in an aggregate sector agProdChange | agricultural productivity change, as annual improvement rate ALL | full mass balance table: production, net exports, supply, and all tracked dispositions an | animal product archv | FAO archive data (early years for data split by years) arid | arid (refers to arid AEZs) avg | average bal | balances bbl | barrels bbld | barrels per day bil | billion bio | biomass bld | building sector bm2 | billion square meters, or thousand square kilometers bm3 | billion cubic meters (cubic kilometers) by | base year C | by GCAM commodity C | carbon C_density | carbon density cal | calibrated cal | caloric content Capture | CO2 capture Carbon | carbon Ccoef | carbon emissions coefficient ccs | carbon capture and storage CDD | cooling degree days (Fahrenheit) Cdensity | carbon density CDIAC | Carbon Dioxide Information Analysis Center cement | cement chp | combined heat and power CL | cropland cm | global gridded crop model Cnf | by GCAM commodity, not including fodder crops coef | input-output coefficient comm | commercial sector conv | conversion conv | convergence cost | input-cost crop | plant-based food commodities crude | crude oil ctry | country curve | supply curve d | day DepRsrc | depletable resource det | detailed, as in a detailed sector Diet | consumer diet digits | number of digits (used for rounding) distribution | energy transmission, distribution, delivery EcYield | economic yield (output per unit of cropland per year) eff | efficiency (output/input) EGS | enhanced geothermal systems EIA | Energy Information Administration EJ | exajoules elas | elasticity elast | elasticity elec | electricity electd | electricity transmission and distribution emiss | emissions en | energy enduse | end-use sectors (buildings, industry, transportation) ErosCtrl | quantity of resbio left in situ for erosion control Exp | exports F | by feed type F | by fuel type FAO | United Nations Food and Agriculture Organization fao | FAO category (e.g. Rfao - by FAO year) FAO2050 | FAO Agriculture Towards 2050 report fby | final base year Feed | animal feed Fert | fertilizer Fi | intermediate fuel Fiber | fiber crops fin | final FixOut | fixedOutput Fllt | fillout (fillout = 1) flow | flow in IEA energy balances; similar to a sector or a use flsp | floorspace fn | function fn | filename Fodder | fodder crops Food | consumption by humans For | forest fos | fossil energy frac | fraction FuelPref | fuelprefElasticity fuelshare | share by specified fuel full | complete; with all applicable combinations included fy | future years gas | natural or synthetic gaseous fuel gaspipe | gas pipeline gasproc | gas processing Gcal | gigacalories gcam3 | from, or consistent with, GCAM 3.0/3.1 gcm | general circulation (climate) model GDP | GDP (gross domestic product) gepic | GEPIC global gridded crop model GIS | from geospatial data GJ | gigajoules GJt | gigajoules per tonne globaltech | global technology Grass | Grassland GrdRenewRsrc | graded renewable resource GTAP | Global Trade Analysis Project H | hydrogen h2 | hydrogen HA | harvested area Ha | hectares ha | hectares harv | harvested HDD | heating degree days (Fahrenheit) heat | district heat hist | historical hydro | hydroelectric power i | by input IEA | International Energy Agency iea | IEA category IFA | International Fertilizer Industry Association ifa | IFA category (e.g. Rifa - by IFA year) IMAGE | IMAGE integrated assessment model img | IMAGE category (e.g. Rimg - by IMAGE year) Imp | imports imp | imports in | input ind | industrial sector indenergy | industrial energy use indfeed | industrial feedstocks info | general information input | minicam-energy-input interp | interpolation intlship | international shipping inttech | intermittent-technology IO | input-output coefficient (intensity) iso | three-digit lower-case country ISO code Jatr | Jatropha kbbl | thousand barrels kbbld | thousand barrels per day kcal | kilocalories kgC | kilograms of carbon kHa | kilohectares km2 | square kilometers km3 | cubic kilometers (= billion cubic meters) kt | kilotonnes ktoe | kilotonnes of oil equivalent kw | kilowatt kwh | kilowatt-hours L1 | level1 data / processing-code L2 | level2 data / processing-code LC | land cover LCi | land cover, incomplete in that non-existent combinations are not written out liq | refined liquid fuels LN | land node loadfactor | transportation load factor (pers/veh or tonnes/veh) Logit | logit-exponent lpjml | LPJmL global gridded crop model LT | land type LTsage | SAGE land type LV | Land Value m | transportation mode m2 | square meters m3 | cubic meters max | indicates a maximum value Mcal | megacalories meat | animal-based food commodities MER | market exchange rates Mgd | managed mi | model interface mil | million Mill | milling (forest product processing) min | indicates a minimum value MJ | megajoules Mm3 | million cubic meters most | most (to the greatest extent) MSW | municipal solid waste Mt | megatonnes (= teragrams) mult | multiplier N | nitrogen names | column names NEcost | non-energy cost neg | negative values only (positive values set to 0) NetExp | net exports (positive values = net exporter, negative values = net importer) NH3 | anhydrous ammonia nonenergy_Cseq | carbon sequestration through non-energy use nonexist | that do not exist nonfood | agricultural commodity demands other than for food, animal feed, or bioenergy nonmotor | non-motorized, as a transportation mode (i.e., walking and cycling) nonspec | non-specified noresm | NorESM general circulation model num | numerical (i.e. not prefixed by "X") OM | operations and maintenance OMfixed | fixed O&M costs OMvar | variable O&M costs OtherUses | Other uses of ag commodities; includes processing losses, energy/industrial uses, seed, waste, stock changes, and other uses. out | output ownuse | own use of energy, generally electricity P | price passthru | pass-through sector or technology Past | pasture pc | per-capita Pcal | petacalories pcGDP | per-capita GDP peak | at peak biomass Pg | petagrams PJ | petajoules pkm | passenger kilometers pol | polar (refers to polar AEZs) pop | population popl | poplar pos | positive values only (negative values set to 0) PPP | purchasing power parity prelim | preliminary estimate, to be revised later primary | primary energy Prod | production product | product in IEA energy balances; similar to a fuel Protect | protected lands (lands removed from economic land competition) R | by GCAM region rate | annual rate of change ratio | ratio from a specified year RCP | representative concentration pathway ref | reference scenario refining | refining reg | region renew | renewable RenewRsrc | renewable resource rep | repeated by… res | residential sector resbio | residue biomass retire | retirement parameters RFO | residual fuel oil RG3 | region from GCAM 3.0 roofPV | rooftop photovoltaic Rsrc | resource rsrc | resource S | by system (mixed, pastoral) S | by sector Scen | scenario Sepa | EPA sectors serv | service, generally for the buildings sector shell | building shell Shrub | Shrubland shrwt | share-weight Si | by intermediate sector SmthRenewRsrc | smooth renewable resource SSP | shared socioeconomic pathway state | by state in the USA StubTech | stub-technology SubRsrc | subresource subs | subsector supp | supplysector Supply | domestic supply (= total consumption = production - net exports) swgr | switchgrass sz | vehicle size class t | tonnes t | technology tech | technology Tg | teragrams tha | tonnes per hectare thous | thousand tkm | tonne kilometers TOT | total TPES | total primary energy supply (= total consumption = production - net exports) tradbio | traditional biomass trn | transportation sector trop | tropical (refers to tropical AEZs) U | uranium UCD | UC Davis (developers of GCAM 4.0 transportation database) unconv_oil | unconventional oil UnlimitRsrc | unlimited resource UnMgd | unmanaged unoil | unconventional oil USD | US dollars (generally indicated by a dollar year) V | value value | land value Veg | vegetation vkm | vehicle kilometers VOTT | value of time in transit wind | wind energy Y | year yearcols | year columns Yfut | future years Yh | historical years Yield | yield (generally on a harvested area basis, but may be on an economic basis) Ynsy | Year (non-specified years) Yr | year Ysy | Year (specified years)



JGCRI/gcamdata documentation built on March 21, 2023, 2:19 a.m.