Antarctica Gained Ice Mass Between 2021 and 2023
Heavy snowfall temporarily offset long-term ice loss trends across the continent.
Updated on Oct. 5, 2026 in Environmental
Live Poll
Do you feel extreme weather events are becoming more frequent in your community?
Between July 2021 and April 2023, Antarctica gained 695 gigatonnes of ice mass. This research-based observation marks a temporary interruption to the continent's broader trend of ice loss.
Why it matters
Understanding these fluctuations is critical for climate modeling, as unusual atmospheric circulation patterns momentarily balanced ice discharge with increased surface accumulation. This phenomenon highlights the complexity of sea-level projections, which still anticipate significant long-term mass loss.
The continent gained 695 gigatonnes of mass, bringing the net balance near zero during the study period. While ice accumulation increased, researchers note a 92% probability of continued mass loss throughout the 21st century.
The details
Warming waters in the tropical Indian and Pacific oceans generated atmospheric pressure shifts that directed moisture toward Antarctica. This process fueled atmospheric rivers—narrow, concentrated corridors of intense water vapor—which delivered heavy precipitation to the Antarctic Peninsula, Queen Maud Land, and Wilkes Land. This increased surface snowfall temporarily outweighed the ice discharge and calving, where large chunks of ice break off from the edge of a glacier.
Timeline
2020: Atmospheric rivers increased in frequency and intensity.
July 2021: Measurement period for mass gain commenced.
April 2023: Measurement period concluded.
September 2026: Antarctic sea ice reached a winter maximum of 17.59 million square kilometres.
2100: Projected timeframe for sea-level rise contributions.
The Tech Race
This finding sits within the broader climate modeling race to refine projections for global sea-level rise by 2100. It challenges researchers to better isolate transient, weather-driven moisture events from the persistent, climate-driven ice discharge patterns.
This research provides a more granular baseline for scientists estimating global sea-level rise, which is projected to reach a median of 15.7 centimetres by 2100. It emphasizes that localized weather events do not alter the broader, long-term trajectory of global coastal risk.
The takeaway
While Antarctica saw a temporary mass gain due to rare atmospheric moisture transport, the underlying trend remains one of net loss. Researchers will continue to watch for the dissipation of these specific circulation patterns to confirm the long-term projections for the remainder of the century.
Further reading
Explore deeper insights into Environmental research and the shifting climate of the polar regions.
Source note: This article includes information reported by Economic Times.
Live Poll
Do you feel extreme weather events are becoming more frequent in your community?
