In 2022 atmospheric levels of greenhouse gases reached new observed highs with globally averaged concentrations for carbon dioxide (CO2) at 417.9 ± 0.2 parts per million (ppm), methane (CH4) at 1923 ± 2 parts per billion (ppb) and nitrous oxide (N2O) at 335.8 ± 0.1 ppb, respectively 150%, 264% and 124% of pre-industrial (1750) levels.
The global mean near-surface temperature in 2023 was 1.45 ± 0.12 °C above the 1850–1900 average. 2023 was the warmest year in the 174-year observational record, clearly surpassing the previous joint warmest years, 2016 at 1.29 ± 0.12 °C above the 1850–1900 average and 2020 at 1.27±0.13 °C.
https://t.center/WinterFreaks/667The past nine years, 2015–2023, were the nine warmest years on record.
In 2023, ocean heat content reached its highest level in the 65-year observational record.
The rate of global mean sea level rise in the past ten years (2014–2023) is more than twice the rate of sea level rise in the first decade of the satellite record (1993–2002).
Antarctic sea-ice extent reached an absolute record low for the satellite era (1979 to present) in February.
Ice extent was at a record low for the time of year from June till early November, and the annual maximum in September was around 1 million km2 below the previous record low maximum.
It was the warmest summer on record at the Summit station, 3.4 °C warmer than the 1991–2020 average and 1.0 °C warmer than the previous record.
Satellite melt-extent data indicate that the ice sheet had the third highest cumulative melt-day area43 on record (1978–2023), after the extreme melt season of 2012 and 2010.
Preliminary data indicate the annual mass balance of a global set of reference glaciers for the hydrological year 2022-2023 was –1.2 m w.e. This is nominally the largest loss of ice on record (1950-2023), driven by extremely negative mass balance in both western North America and Europe.
Conclusion? It's time to change!
https://t.center/ClimateToDohttps://t.center/MissionPlaneta/96🖇🌍 https://t.center/addlist/PnM6poGtTtwwMzcx
