gigatonnes
Massive weight units
Gigatonnes is the metric spelling of gigatons—units equal to one billion metric tonnes, used almost exclusively for measuring carbon dioxide emissions and ice sheet loss: The ocean absorbs about 2.5 gigatonnes of carbon annually.
The spelling with -nnes signals metric measurement rather than US tons.
Substances released into air
- CO2Carbon dioxide formula
- greenhouseClimate-controlled plant enclosure
- climatePrevailing atmospheric conditions
- atmosphereGaseous layer around planets
methane · sequestration · deforestation · anthropogenic · combustion · industrial · pollution · offset
Standard measures of quantity
- quantifyExpress numerically
- scaleMeasure of relative size
- magnitudeSize or scale
- calculationMathematical problem-solving process
estimate · annual · cumulative · equivalent · threshold · target · benchmark · inventory
Extremely large and heavy
- enormousExtremely large in scale
- immenseExtremely large in scope
- colossalExtremely large in scale
- staggeringShockingly impressive or unsteady
unprecedented · astronomical · overwhelming · incomprehensible · planetary · global · aggregate · total
emissions
Substances released into air
- CO2Carbon dioxide formula
- greenhouseClimate-controlled plant enclosure
- climatePrevailing atmospheric conditions
atmosphere · methane · sequestration · deforestation · anthropogenic · combustion · industrial · pollution · offset
units
Standard measures of quantity
calculation · estimate · annual · cumulative · equivalent · threshold · target · benchmark · inventory
massive
Extremely large and heavy
staggering · unprecedented · astronomical · overwhelming · incomprehensible · planetary · global · aggregate · total · bulk
gigatonnesmilligrams
Thousandths of grams
micrograms · nanograms · grams · picograms · ounces
ton, tons, tonne, tonnes, tonnage, megaton, megatons, megatonne, megatonnes