evidence: Greenhouse gas concentrations, global sea level and ocean heat content reached record highs in 2022, according to the 33rd annual State of the Climate report offsite link. [...] - Earth’s greenhouse gas concentrations were the highest on record. Carbon dioxide, methane and nitrous oxideâ — Earth’s major atmospheric greenhouse gases â — once again reached record high concentrations in 2022. The global annual average atmospheric carbon dioxide concentration was 417.1 parts per million (ppm). This was 50% greater than the pre-industrial level, 2.4 ppm greater than the 2021 amount, and the highest measured amount in the modern observational records as well as in paleoclimatic records dating back as far as 800,000 years. [...] - Ocean heat and global sea level were the highest on record. Over the past half-century, the ocean has stored more than 90% of the excess energy trapped in Earth’s system by greenhouse gases and other factors. The global ocean heat content, measured from the ocean’s surface to a depth of 2,000 meters (approximately 6,561 ft), continued to increase and reached new record highs in 2022. Global mean sea level was record high for the 11th-consecutive year, reaching about 101.2 mm (4.0 inches) above the 1993 average when satellite altimetry measurements began.