You have to admit, Greta is right
The Earth's oceans are what moderate the temperaturs of the Earth.
For 3/4 of 2023, the global ocean surface temperatures were totally above the range of temperatures that we've seen over the past 45 years making 2023 by far the hottest year recorded for Ocean temperature (see charts in link below). January of 2024 jumped to an even higher level making it look like it will surpass 2023.
If this doesn't alarm you, you have been breathing too much exhaust fumes.
https://climate.copernicus.eu/copernicus-2024-world-experienced-warmest-january-record