AMS report: 2025 sees record greenhouse gas and ocean heat levels
The American Meteorological Society (AMS) has released its 36th Annual State of the Climate report, confirming that greenhouse gas concentrations, sea level rise, and ocean heat reached historic maximums in 2025. The report, compiled by 625 scientists from 60 countries, highlights a continuous worsening of global climate indicators.
Atmospheric concentrations of carbon dioxide (CO2), methane, and nitrous oxide reached record levels. Global CO2 averaged 425.6 ± 0.1 parts per million, a 53% increase from pre-industrial levels. Fossil fuel emissions also hit a record high, estimated at 10.3 ± 0.5 petagrams of carbon per year, more than triple the levels recorded in the 1960s.
Global temperatures in both land and ocean areas were among the three highest recorded since the mid-19th century. Europe recorded its warmest year ever, while Russia, China, South Korea, and Argentina experienced their second warmest years.
Entities
American Meteorological Society · Argentina · China · Europe · Russia
Claims
What the coverage asserts, and how well corroborated each claim is across sources.
- [● 4 SOURCES] Greenhouse gas concentrations, sea level rise, and ocean heat reached historic highs in 2025. www.diariodemallorca.es · www.eldia.es · www.laopinioncoruna.es · www.levante-emv.com
- [● 4 SOURCES] The average global CO2 level reached 425.6 ± 0.1 parts per million. www.diariodemallorca.es · www.eldia.es · www.laopinioncoruna.es · www.levante-emv.com
- [● 4 SOURCES] The 36th Annual State of the Climate report was published by the American Meteorological Society. www.diariodemallorca.es · www.eldia.es · www.laopinioncoruna.es · www.levante-emv.com
- [● 4 SOURCES] Russia, China, South Korea, and Argentina recorded their second warmest year. www.diariodemallorca.es · www.eldia.es · www.laopinioncoruna.es · www.levante-emv.com
- [● 4 SOURCES] Fossil fuel emissions reached a historic high of 10.3 ± 0.5 petagrams of carbon per year. www.diariodemallorca.es · www.eldia.es · www.laopinioncoruna.es · www.levante-emv.com
- [● 4 SOURCES] CO2 levels represent a 53% increase compared to pre-industrial levels of approximately 278 ppm. www.diariodemallorca.es · www.eldia.es · www.laopinioncoruna.es · www.levante-emv.com
- [● 4 SOURCES] Europe experienced its warmest year on record in 2025. www.diariodemallorca.es · www.eldia.es · www.laopinioncoruna.es · www.levante-emv.com