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Australian Antarctic Program Partnership Profile picture
Australian Antarctic Program Partnership
@Ant_Partnership
$50M program to understand the role of the Antarctic and Southern Ocean within the global climate system and implications for marine ecosystems. Led by @UTAS_.
Jun 19, 2023 • 6 tweets • 5 min read
Anomalies in #Antarctic sea ice concentration show the monthly variation from the long-term mean. This map from nilas.org shows more ➖ than ➕ anomalies for June. See the lack of sea ice in Bellingshausen Sea (arrowed), almost at summer ice levels in mid-winter! Image This map from @NSIDC and @NASAEarth shows sea ice concentration on 17 June. The orange line is the typical extent for that day based on the average from 1981 to 2010. Some coastal regions are now ice-free where that has not been observed before. Image
May 26, 2023 • 9 tweets • 6 min read
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The massive currents swirling around Antarctica are a crucial driver of the global network of ocean currents that transport heat, carbon, oxygen and nutrients around the world. How will this lifeline change on a warming planet?
[animation: @NASAViz] 2/9
 New research from @CSIRO, @AntarcticSciAus, @ccrc_unsw, @AucklandUni and AAPP shows the deep ocean currents in the Australian Antarctic Basin have slowed by approximately 30% over the past three decades, reducing oxygen levels in the deep ocean.
aappartnership.org.au/antarctic-deep…
May 24, 2023 • 4 tweets • 2 min read
Three great @AntarcticSciAus Research Associate positions in @UTAS_ Hobart: paleo ice-sheet modeller (closes 5 June); magnetotelluric geophysicist (closes 11 June); and ice-sheet modelling and data science (closes 26 June).
Please share and/or apply!
Details at links below 🔽
May 9, 2023 • 7 tweets • 6 min read
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Each spring in the Southern Ocean, sometimes seen from space by @NASA satellites, swirling blooms of solar-powered phytoplankton turn CO2 into food for everything else. While we know the blooms are critical to the biological carbon pump, what triggers them is up for debate. NASA satellite view of Sout... 2/6
 In #ASLO_Letters, researchers from @IMASUTAS, @ClimateExtremes, @CSIRO & @Ant_Partnership use chlorophyll, phytoplankton carbon & nitrate to understand the best indicator for the timing of blooms - the first study to look at all 3 at once.
➡️ doi.org/10.1002/lol2.1… @aslo_org Image
Apr 28, 2023 • 8 tweets • 6 min read
🫁 It’s like you can see the oceans breathing. As seasons change, chlorophyll levels from tiny marine plants ripple around the planet. Phytoplankton use chlorophyll to absorb carbon dioxide to make food. This @NASA map gives insights to the oceanic carbon cycle. Read on...🧵 2/7
 🔃 Crucial for ocean carbon cycling is the 'biological pump', where carbon is taken from the atmosphere by life and put into storage in the deep. It turns out that tiny phytoplankton in the @_SouthernOcean play an outsized role in stopping the planet from overheating. Microscopic phytoplankton (...