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IMG 0556 Bella Zeldis copy

Highlights from Antarctic ice dynamics research 2022/23
Date: 2023
Type: Update
Authors: Project 1
Summary: The world’s ice sheets are sensitive to environmental change and, as the largest reservoir of freshwater on Earth, melting of the Antarctic Ice Sheet has significant potential to raise sea levels and disrupt global ocean circulation. To determine ice sheet response to warming, our team of researchers in the Antarctic Ice Dynamics project are looking at environmental records of how the Antarctic ice sheets and surrounding ocean have changed in the past, and comparing those records to signals of change that we can detect today.
Hydrographic mooring being deployed in Terra Nova Bay

Highlights from Antarctic ocean mechanics research 2022/23
Date: 2023
Type: Update
Authors: Project 2
Summary: A changing Antarctica will impact oceanic transport of heat and other associated materials, such as salt, carbon dioxide, oxygen and nutrients. Researchers in the Antarctic Ocean Mechanics project are investigating past and present ocean conditions - currents, polynya formation, sea ice and dispersion of meltwater - and how this may change as the world warms.
Fig 1 tangaroa in Ant

Highlights from ecosystems research 2022/23
Date: 2023
Type: Update
Authors: Project 3
Summary: The Ross Sea region contains one of the most productive marine ecosystems in the Southern Ocean, encompassing open ocean, pack ice and coastal habitats, including much of the world’s largest marine protected area. It also harbours diverse land-based ecosystems ranging from iconic Antarctic lakes to ancient soils that are home to unique biota. Our team of researchers in the Ross Sea Ecosystems project is working to better understand what the future may hold for these environments. We are developing new techniques and autonomous instruments for remote sensing to fill gaps in understanding of biodiversity and ecological process.
Sampler site

Highlights from sea ice and carbon cycle feedback research 2022/23
Date: 2023
Type: Update
Authors: Project 4
Summary: Sea ice extent, and the exchange of carbon dioxide (CO2) and other gases between the atmosphere and ocean, varies from year to year, influenced by changes in atmospheric and open-ocean conditions. Understanding the difference between seasonal variability and long-term change is key to predicting Antarctica’s influence on the future global climate system. Researchers in the Sea Ice and Carbon Cycle Feedbacks project are analysing variability in sea ice and the carbon cycles in the Ross Sea region and on larger scales, including connections to atmospheric circulation and climate processes across the Southern Ocean and much of the Southern Hemisphere.
Oceans1

We landed a camera on Venus before seeing parts of our own oceans – it’s time to ramp up observations closer to home
Date: 2023
Authors: Craig Stevens and Natalie Robinson
Summary: If we want to better understand the climate-regulating role of Earth’s oceans, we must increase the effort we put into observing them, with a focus on our planet’s largest heat sink, the Southern Ocean.
Objective 2 Sea ice cracks I Mc Gregor

Sea ice scientists call for urgent emissions reductions to keep our climate liveable
Date: 2023
Type: Update
Summary: Antarctic scientists concerned about dramatic sea ice retreat have today issued the following statement from the emergency summit in Wellington. They have called for urgent reduction in carbon dioxide emissions to keep the climate within liveable conditions.
Ice sheet/shelves

New reconstructions of past ice sheet dynamics
Date: 2023
Type: Science
Authors: Antarctic Science Platform
Summary: Five new reconstructions of past Antarctic ice sheet dynamics have recently been published, relying on sedimentological and geochemical analyses.
Sea ice in the Ross Sea

As Antarctic sea ice continues its dramatic decline, we need more measurements and much better models to predict its future
Date: 2023
Authors: Inga Smith, Andrew Pauling, Greg Leonard, Maren Richter, Max Thomas, Pat Langhorne and Wolfgang Rack
Summary: After two seasons of record-breaking lows, Antarctica’s sea ice remains in dramatic decline, tracking well below any winter maximum levels observed since satellite monitoring began during the late 1970s.
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