gigatonne
One billion tonnes
A gigatonne is one billion metric tonnes, a unit used almost exclusively for measuring carbon dioxide emissions and other planetary-scale quantities: Human activity releases roughly 40 gigatonnes of CO2 annually.
Also spelled gigaton.
The prefix giga- indicates a billion of the base unit.
Sixth element, atomic symbol C
- emissionsSubstances released into air
- CO2Carbon dioxide formula
- greenhouse gasHeat-trapping atmospheric compound
- atmosphereGaseous layer around planets
sequestration · carbon budget · Paris Agreement · IPCC · offset · net zero · footprint · methane
Relating to outer space
- planetaryOf or relating to worlds
- geologicalOf Earth's physical structure
- globalRelating to entire world
- continentalOf a continent
oceanic · ice sheet · glacier · biomass · crust · mantle · asteroid · comet
Standardized measurement quantity
- massQuantity of matter
- scaleMeasure of relative size
- quantifyExpress numerically
- weightMeasure of heaviness
unit · magnitude · calculation · estimate · equivalent · conversion · threshold · benchmark
Of atomic energy
- thermonuclearInvolving nuclear fusion heat
- yieldProduce or relinquish
- Tsar BombaLargest nuclear weapon detonated
- warheadMunition's explosive section
blast · detonation · hydrogen bomb · impact · asteroid · extinction event · shockwave · destructive force
carbon
Sixth element, atomic symbol C
- emissionsSubstances released into air
- CO2Carbon dioxide formula
- greenhouse gasHeat-trapping atmospheric compound
atmosphere · sequestration · carbon budget · Paris Agreement · IPCC · offset · net zero · footprint · methane · anthropogenic
astronomical
Relating to outer space
- planetaryOf or relating to worlds
- geologicalOf Earth's physical structure
- globalRelating to entire world
continental · oceanic · ice sheet · glacier · biomass · crust · mantle · asteroid · comet · marine
SI unit
Standardized measurement quantity
weight · unit · magnitude · calculation · estimate · equivalent · conversion · threshold · benchmark · order of magnitude
nuclear
Of atomic energy
- thermonuclearInvolving nuclear fusion heat
- yieldProduce or relinquish
- Tsar BombaLargest nuclear weapon detonated
warhead · blast · detonation · hydrogen bomb · impact · asteroid · extinction event · shockwave · destructive force