Climate Crisis in Antarctica

Antarctica is at a crossroads. The global climate crisis is interrupting natural processes across large parts of Antarctica and the Southern Ocean.

As we stand on the brink of catastrophic change, the actions we take over the next decade will determine the course of human civilization for generations.

close up of Adelie penguin
Adélie penguin (Pygoscelis adeliae). Image credit: Canva.com.
Deville glacier calving in Andvord Bay near Neko Harbor
Deville glacier calving in Andvord Bay, near Neko Harbor. Image credit: Canva.com.

What’s happening?

CLIMATE CRISIS IN ANTARCTICA

Antarctica and the Southern Ocean play a central role in regulating Earth’s climate system. Through their influence on global ocean circulation, heat storage, and carbon cycling, changes in the Antarctic region have consequences far beyond the continent itself.

Over millions of years Antarctic ice, oceans, and ecosystems have helped regulate global temperatures. Ice reflects solar energy and contributes to ocean circulation patterns that redistribute heat around the planet. Antarctic ecosystems draw significant amounts of carbon from the atmosphere and store it in the ocean for long periods, reducing its contribution to atmospheric warming.

These interconnected systems have helped maintain a relatively stable climate for millennia, but they are now undergoing rapid change.

CLIMATE CRISIS IN ANTARCTICA

What are the impacts?

We know the Antarctic plays a critical role in regulating the global climate, and that global heating is disrupting polar systems. Scientists are working to understand these shifts, and to make sense of complex changes that are already affecting life across the globe.

Follow the links below to learn more about the climate crisis in Antarctica.

Antarctic mountain and ocean

Ocean Pump

The Southern Ocean plays a critical role in the global climate system.

Gentoo penguins

Penguins

Since 1980, several penguin colonies on the Antarctic Peninsula have vanished.

Tabular icebergs and plates of sea ice.

Ice Shelves

Melting ice shelves could lead to several feet of sea level rise by 2100.

stormy southern ocean

Heating Ocean

The Southern Ocean is slowing climate change by absorbing excess heat. But it comes at a cost.

melting sea ice

Sea Ice

Sea ice is more than just frozen ocean. It is a vital habitat and critical climate regulator.

Emperor penguin and chick
Emperor penguin (Aptenodytes forsteri) with chick. Image credit: Canva.com.
Adelie feeding chick
Adélie penguin (Pygoscelis adeliae) with chick. Image credit: Canva.com
Antarctic hairgrass
Antarctic hairgrass (Deschampsia antarctica), one of only two flowering plants in the Antarctic. Image credit: Canva.com
Antarctic Pearlwort.
Antarctic pearlwort (Colobanthus quitensis), one of only two flowering plants in the Antarctic. Image credit: Liam Quinn

Why it’s important

CLIMATE CRISIS IN ANTARCTICA

What happens in Antarctica doesn’t stay in Antarctica. In fact, it affects all of humanity.

Reduced winter sea ice threatens to slow global ocean circulation and drive extreme weather events across the globe. Find out more.

Antarctic glaciers are melting at an accelerating rate, with the potential to raise global sea levels by hundreds of feet. Even a few feet of sea level rise would be catastrophic for millions of people, destroying critical sources of freshwater and farmland with saltwater, and displacing millions of people. Find out more.

Lamaire channel sunset

CLIMATE CRISIS IN ANTARCTICA

What ASOC is doing

ASOC advocates for rapid cuts to carbon emissions, and policies that will build Antarctic ecosystem resilience in the face of climate change. 

We work to build awareness of the impacts of climate change on the Antarctic environment through public advocacy, reporting to Antarctic governance meetings, and conducting outreach to governments. 

CLIMATE CRISIS

How we work

As the only environmental NGO invited to observe Antarctic Treaty meetings, we represent the Antarctic conservation community at the highest levels of Antarctic governance.

We work within the system to address the climate crisis in the following ways:

Gentoo underwater
Marine Protected Areas

ASOC strongly supports the establishment of a representative network of marine protected areas across the Southern Ocean.

Read more

Antarctica waterfall
Within the Antarctic Treaty System

ASOC advocates for precautionary, science-based policies at the highest levels of Antarctic governance.

Read more

Emperor penguin and chick
The Polar Code

ASOC advocates for mandatory measures within the Polar Code to address the climate impacts of shipping and reduce its contribution to environmental change in polar regions.

Read more

Video: courtesy of Richard Sidey

What you can do

climate crisis

It’s not too late to act. The greatest threats to Antarctica today come from right here – where we live. As Antarctica nears irreversible tipping points, we must take urgent action now to secure a safe climate future. 

Rally for Antarctica, May 2022. Brandenburg Gate, Berlin. Photo: Saskia Uppenkamp.
Rally for Antarctica, May 2022. Brandenburg Gate, Berlin. Photo: Saskia Uppenkamp.

Reference list

ASOC (2026) Climate response report card

ASOC (2026) Critical warming thresholds for the Antarctic Ice Sheet and implications for irreversible sea-level rise

ASOC (2026) Overshoot of 1.5°C and implications for Antarctica and the Southern Ocean

ASOC (2025) Critical climate thresholds for the Antarctic Ice Sheet and the risk of multi-meter sea-level rise

ASOC (2025) Geoengineering in Antarctica is not a solution to rapid ice loss and irreversible sea-level rise

ASOC (2023) Carbon Footprints of Antarctic Activities

ASOC (2023) Decarbonizing Antarctic Operations: best practices for renewable energy deployment at Antarctic research stations

ASOC (2023) Increasing evidence of critical sealevel rise with emissions above 1.5°C Paris agreement limit

ASOC (2023) Irreversible near-term consequences of Southern Ocean acidification with current CO2 emissions pathways

ASOC (2022) Banning Hydrocarbon Extraction in Antarctica Now: Reducing the Risks and Impacts of Global Climate Change

ASOC (2022) Ice Sheet Instability, Long-term Sea-level Rise, and Southern Ocean Acidification: Time for Coordinated Action by Antarctic Treaty Parties

ASOC (2019) Limiting global warming to 1.5°: the Antarctic context

ASOC (2017) Climate change report card

ASOC (2017) Decarbonizing Antarctic Operations

ASOC (2016) Antarctic Climate Change, Ice Sheet Dynamics and Irreversible Thresholds: ATCM Contributions to the IPCC and Policy Understanding

ASOC (2016) Antarctic Climate Change Report Card

ASOC (2015) Climate Change 2015: A Report Card

ASOC (2015) The Antarctic Treaty System, Climate Change and Strengthened Scientific Interface with Relevant Bodies of the United Nations Framework Convention on Climate Change (UNFCCC)

ASOC (2014) Antarctic Climate Change Report Card 2014

ASOC (2014) Near-term Antarctic Impacts of Black Carbon and Short-lived Climate Pollutant Mitigation

ASOC (2014) The West Antarctic Ice Sheet in the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC): a key threat, a key uncertainty

ASOC (2013) Black Carbon and other Short-lived Climate Pollutants: Impacts on Antarctica

ASOC (2013) Update: The Future of the West Antarctic Ice Sheet

ASOC (2011) Ocean Acidification and the Southern Ocean

ASOC (2010) Energy Efficiency And Renewable Energy Under Extreme Conditions: Case Studies From Antarctica

ASOC (2010) Key Climate Change Actions in Antarctica: Emissions Reduction, Adaptation and Science

ASOC (2009) Policy Implications Arising from SCAR’s Report: Antarctic Climate Change and the Environment

ASOC (2008) Impacts of Climate Change on Antarctic Ecosystems 

ASOC (2007) The Antarctic and Climate Change

ASOC (2006) The Antarctic and Climate Change

ASOC (2005) The Antarctic and Climate Change

Rintoul, S.R. (2018). “The global influence of localized dynamics in the Southern Ocean.” Nature Climate Change, 8, 635–636

Marshall, J. & Speer, K. (2012). “Closure of the meridional overturning circulation through Southern Ocean upwelling.” Nature Geoscience, 5, 171–180

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