In 2023, CO2 concentrations were at 420 parts per million (ppm), methane at 1,934 parts per billion, and nitrous oxide at 336 parts per billion. CO2 accounts for about 64% of the warming effect on the climate. Its annual increase of 2.3 ppm marked the 12th consecutive year with an inc...
Published by Ian Tiseo, Feb 6, 2023 This statistic represents the average level of carbon dioxide in the atmosphere worldwide between the 1880s and 2018. In 2015, the level of CO2 in the atmosphere surpassed 400 parts per million. Since the beginning of the first measurements in 1959, th...
& Li, J. (2023). The global power sector’s low-carbon transition may enhance sustainable development goal achievement. Nature Communications, 14(1), 3144. Mardani, A., Streimikiene, D., Cavallaro, F., Loganathan, N., & Khoshnoudi, M. (2019). Carbon dioxide (CO2) emissions and ...
The chart plots two-year temperature changes since 1988, with the respective two-year CO2 changes (ppm). It has been 26 years since that testimony-performance, thus there are 13 two-periods plotted on the chart. In addition, the linear trend for the HadCRUT4 gold-standard temperature dataset...
Human emissions of greenhouse gases have increased atmospheric concentrations of CO2, methane and nitrous oxide to their highest levels in at leasta few million years— if not longer. The figure below shows concentrations of these greenhouse gases — inparts per million(ppm) for CO2 (blue line)...
climate budgeting in 2024 (2023 p. 16). Bristol UK admits its “One City Climate Strategy” is “not a delivery plan and does not plot the route to achievement…as city partners have been unable to find the resources to lead delivery action beyond their own responsibilities” (2023, p.4...
the European Parliament adopted amendments requiring that ship companies should linearly reduce the annual average CO2emissions from all their ships at least by 40% by 2030, with fines for their nonobservance. Since 2023, the European Commission plans to include maritime transport in the CO2emission...
Global warming is accelerating – the facts • Since the Industrial Revolution, which introduced machinery powered by coal and gas, atmospheric CO2 concentration has increased by about 40%, to above 400 parts per million (ppm).11 Current CO2 levels are 100 ppm higher than at any time in ...
2011). CO2 is also produced through the combustion of carbon products such as fuel. The global average outdoor CO2 concentration was reported to be around 415 ppm in 2021 (NOAA, 2023). CO2 concentrations in occupied indoor spaces are higher due to occupants’ respiration and other CO2 ...
*Trace “greenhouse gasses” parts per million (ppm) / percentage of total atmosphere at 1,000 feet above mean sea level: Carbon dioxide (CO2,) 0.04%, 421 ppm, methane (CH4,) 0.00017% 1.7 ppm, nitrous oxide (N2O,) 0.32 ppm.