https://www.metoffice.gov.uk/about-us/press-office/news/weather-and-climate/2024/met-office-carbon-dioxide-forecast-on-the-limits-of-compatibility-for-achieving-1.5c The build-up of atmospheric carbon-dioxide between 2023 and 2024 is forecast to be faster than that required to track IPCC scenarios that limit global warming to 1.5°C, that is the finding from the latest Met Office CO₂ forecast.

Which dataset (e.g. NASA, NOAA, Berkeley Earth)? How are ties resolved?

@StevenK I‘d say NOAA is a good dataset

@StevenK If there is a tie, I return 50%

Two words: El Niño

@Gideon37 But might have peaked in December

Why close so early?

@ICRainbow Changed it

The trend is your friend!