String lookup table

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)