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State of Our Climate
Atmospheric Greenhouse Gas Concentrations
Scripps
daily CO2
Preindustrial GHG
concentrations (WMO)
CO2 278 ppm
Methane 722 ppb
Nitrous oxide 270 ppb
Atmospheric GHG concentrations tell us what
the future higher 'committed' (locked in) warming is.
It is about another 70% of global temperature
increase (IPCC AR5)
Global Carbon Budget
Dec 2016 Methane Budget
Nov 2016 Nonlinear climate sensitivity
Climate sensitivity to CO2 X2 is 4.88C (likely range, 4.29 to 5.44C per CO2 doubling for warm phases (as now).
Methane
levels.org
20
18
Very Strong Atmos Methane Growth FEEDBACK
Copernicus CAMS atmospheric satellite
Charts
May 2020
Trends in global CO2 & greenhouse gas emissions
PBL Netherlands Environmental Assessment Agency
Spring 2020
NOAA Greenhouse gas Index CO2 equivalent (includes other GHGs) 500 ppm
NOAA Atmospheric GHG trends
Global Carbon Project CO2
2020
Global Carbon Project Methane
2020
Global Carbon Project Nitrous Oxide
2020