Sea Level Trend 1850-2024

This work describes the determination process of the sea level dataset in 1850-2024. Data for 1880-2024 are based on measurements, and for 1850-1880, on the parabolic trendline. The original data are according to various baselines and were converted in this work to the uniform “pre-industrial” 1850-1900 baseline. In 2024 the global sea level was 258 mm above the 1850-1900 baseline. The average sea level change in 1994-2024 was 3.33 mm/y. The acceleration of the sea level rise is currently 0.0164 mm/y2, (0.0164 mm/year)/year. The sea level change per 1°C of global warming decreased from 265 mm/°C in 1980 to 197 mm/°C in 2020. The dataset is available online at (no login required): https://nowagreen.ct.ws/sl.php