{"id":744105,"date":"2026-02-05T13:45:10","date_gmt":"2026-02-05T13:45:10","guid":{"rendered":"https:\/\/www.europesays.com\/uk\/744105\/"},"modified":"2026-02-05T13:45:10","modified_gmt":"2026-02-05T13:45:10","slug":"atmospheric-carbon-dioxide-rise-to-remain-too-fast-to-track-global-climate-targets-in-2026","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/uk\/744105\/","title":{"rendered":"Atmospheric carbon dioxide rise to remain too fast to track global climate targets in 2026"},"content":{"rendered":"

The latest forecast from Met Office scientists indicates that the rate of atmospheric carbon dioxide (CO\u2082) increase this year will remain too fast to meet climate targets outlined for limiting global warming to 1.5\u00b0C.<\/p>\n

This rise in atmospheric carbon dioxide \u2013 the most important contributor to climate change – is despite a temporary small slowdown associated with natural climate fluctuations. <\/p>\n

The annual average CO\u2082 concentration at the Mauna Loa Observatory, in Hawaii, is projected to rise by 2.37 \u00b1 0.55 parts per million (ppm) in 2026 compared to 2025, reaching a new high of 429.4 \u00b1 0.6 ppm.<\/p>\n

Professor Richard Betts, who leads the production of the forecast<\/a>, said: \u201cThe slight slowdown in the rate of CO\u2082 increase is only attributed to a temporary strengthening of natural carbon sinks \u2013 such as areas of tropical forest which draw down carbon dioxide- thanks to moderate La Ni\u00f1a conditions observed in late 2025 and early 2026.<\/p>\n

\u201cThese conditions promote increased CO\u2082 absorption by plants and oceans, but the overall trend remains upward, with concentrations continuing to climb well above the trajectories required to cap global warming at 1.5\u00b0C compared with the period 1850-1900.\u201d<\/p>\n

Decades of measurements at Mauna Loa reveal an accelerating rise in atmospheric CO\u2082, primarily driven by human-caused emissions from fossil fuel burning and deforestation. While natural carbon sinks have removed a substantial amount of CO\u2082 from the atmosphere, concentrations have nonetheless surged by over 50% since the industrial revolution. In the absence of these natural processes, the increase would have been nearly double.<\/p>\n

Natural carbon sinks<\/p>\n

Short-term climate fluctuations, such as the El Ni\u00f1o Southern Oscillation (ENSO), play a significant role in the variability of annual CO\u2082 increases. El Ni\u00f1o conditions generally weaken natural carbon sinks, resulting in faster rises, while La Ni\u00f1a conditions have the opposite effect. The Met Office forecast accounts for both anthropogenic emissions and ENSO-related climate impacts, using sea surface temperature anomalies in the equatorial Pacific as a key predictive factor.<\/p>\n

The largest observed annual CO\u2082 rise on record so far was between 2023 and 2024, surpassing forecasts. This unexpected increase highlighted the complexity of atmospheric CO\u2082 dynamics and the influence of factors beyond direct emissions, including climate variability and unaccounted natural processes.<\/p>\n

Recent CO\u2082 increments at Mauna Loa significantly exceed those projected in scenarios compatible with limiting warming to 1.5\u00b0C, as outlined by the Intergovernmental Panel on Climate Change (IPCC). The Paris Agreement requires a rapid slowdown and eventual cessation and reversal of the CO\u2082 rise, yet the current and forecasted rates remain well above these critical benchmarks. For the first half of the 2020s, the average annual rise observed at Mauna Loa was 2.61 ppm, in contrast to the 1.33\u20131.79 ppm per year required by the IPCC’s most ambitious scenarios.<\/p>\n

Whilst the forecast rate of CO\u2082 increase\/rise is incompatible with the 1.5\u00b0C goal, every fraction of a degree of avoided warming matters as it reduces the risks and impacts to people and nature, and it is important to minimise the exceedance of 1.5\u00b0 C global warming as much as possible.<\/p>\n

Keeling Curve<\/p>\n

The Met Office Carbon Dioxide forecast has been produced since 2016. \u00a0<\/p>\n

The \u201cKeeling Curve<\/a>\u201d record of atmospheric levels of carbon dioxide at Mauna Loa has been maintained by the Scripps Institution for Oceanography, University of California San Diego since 1958.\u00a0<\/p>\n

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