ourclimate

The site for up to date vital climate change indicators in images
PLANETARY EMERGENCY SIGNS

Atmospheric
greenhouse gases
NOAA Mauna Loa
March 2023

CO2 420 ppm
CH4 1925 ppb
N2O 336 ppb

Already committed future warming and climate change

The radiative heat forcing of today's atmospheric GHGs commits the world to a global warming of 1.5C by 2030-2040 (IPCC AR5 WG1 Figure 11.6) and full equilibrium warming over 2.0C.

'The current RF(radiative forcing) from GHGs maintained indefinitely (i.e., the commitment from constant greenhouse gas concentrations) would correspond to approximately 2°C warming.'
(IPCC AR5 WG1 12.5.4.2)

Site maintained by Peter Carter

CLIMATE SYSTEM EMERGENCY

> CO2 emissions
Record high Increasing
> All GHG emissions Record high
> Global temperature
Record high 10-year average

> N. Hemisphere Temperature
Record high Accelerating increase

> Ocean heat
Record high Accelerating increase
> Ocean acidification
Record high Accelerating increase
> Ocean de-oxygenation
Record high Increasing

BAMS 2022 State of Climate
Bulletin American Met Society.
Most comprehensive (annual)

Monthly detailed Temperature by J. Hansen,
M. Sato (Columbia Earth)