According to the Intergovernmental Panel on Climate Change (IPCC), the global mean sea level rose by about 20 cm (7.9 inches) between 1880 and 2018, and the rate of sea level rise has accelerated in recent decades. This rise in sea level is largely attributed to the melting of glaciers and ice sheets, including those in the polar regions.
Observations from satellite data and other monitoring methods suggest that the ice caps in Greenland and Antarctica are losing ice at an increasing rate. For instance, a study published in the journal Nature in 2021 estimated that the Greenland Ice Sheet lost about 267 billion tons of ice per year between 2002 and 2019, while the Antarctic Ice Sheet lost about 155 billion tons of ice per year during the same period.
However, it's important to note that the rate of ice loss can vary over time and can be influenced by factors such as natural climate variability and the complex interactions between the atmosphere, ocean, and cryosphere (ice components of the Earth system). Additionally, some regions within the polar ice caps may be melting faster than others.
Overall, while the scientific community agrees that the polar ice caps are melting and contributing to sea level rise, there is ongoing research to refine estimates and projections regarding the exact rates of ice loss and the potential impacts of climate change on these critical regions.
