Antarctic sea ice levels reached record lows in 2022, and 2023 is on track to be worse

A line graph shows average sea ice levels between 1981 and 2021, compared with the relatively low levels seen in 2022. Another line shows that 2023 sea ice levels are even worse.
This chart shows area of ocean (in millions of square kilometres) with at least 15pc sea ice.
Chart: ABC News/Leonie Thorne Source: National Snow and Ice Data Center