Christina Schmidt
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christinaocean.bsky.social
Christina Schmidt
@christinaocean.bsky.social
950 followers 200 following 48 posts
🌊🧊 Ice/Ocean Modeller @bas.ac.uk

🎓 @ccrc.bsky.social (UNSW) & @geomarkiel.bsky.social

🌐 https://schmidt-christina.github.io
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christinaocean.bsky.social
Congrats @adele-morrison.bsky.social
July 25, 2025 at 8:38 AM
christinaocean.bsky.social
See our paper for more details on model setup/ evaluation and modeling downslope flow.

doi.org/10.1029/2024...

Thanks to my co-authors @adele-morrison.bsky.social, @profmattengland.bsky.social, Wilton Aguiar and Angus Gibson

@ccrc.bsky.social@antarcticsciaus.bsky.social@access-nri.bsky.social
🌊
Sensitivity of Antarctic Bottom Water Formation and Export to Horizontal Model Resolution
Dense Shelf Water formation decreases when the model resolution is refined from 1/10° to 1/20° to 1/40° due to shelf freshening Antarctic Bottom Water export increases with finer model resolution...
doi.org
July 14, 2025 at 5:50 AM
christinaocean.bsky.social
We conclude that a horizontal resolution of 1/10° is sufficient to simulate AABW export from East Antarctica, but finer resolutions of up to 1/40° increase the offshore transport and may be required to resolve the AABW export in the Weddell and Ross Seas.
July 14, 2025 at 5:48 AM
christinaocean.bsky.social
The total offshore AABW transport increases, however, with increasing model resolution, especially across the 2500m isobath, due to less diapycnal mixing during the downslope flow. This resolution dependency is strongest in the Ross and Weddell Seas, the two most important regions of AABW formation.
AABW export in the 1/10° (blue), the 1/20° (orange) and the 1/40° (green) experiments. (a) Offshore transport across the 1,000 m (left) and 2,500 m (right) isobaths for σ2 ≥ 37.15 kg m-3 and (b) for the four individual regions of AABW export using customized density layers, as defined in the figure labels.
July 14, 2025 at 5:48 AM
christinaocean.bsky.social
The formation of Dense Shelf Water, the precursor of AABW, reduces with increasing model resolution due to
shelf freshening. Increased eddy activity with higher model resolution flattens the isopycnals in the open Southern Ocean and enables access of lighter waters onto the continental shelf.
Surface water mass transformation integrated over (a) the Ross Sea, (b) the Weddell Sea, (c) Prydz Bay, and (d) the Adélie Coast in the 1/10° (blue), the 1/20° (orange), and the 1/40° (green) experiments. The mean transformation rate, averaged across density between the gray dashed lines (where the transformation rate in the 1/10° experiment is 25%–75% of the peak transformation), is given in the insets of each panel.
July 14, 2025 at 5:48 AM
christinaocean.bsky.social
More about our outreach program on the #DMV blog: antarctic.org.au/outreach-at-...
Outreach from the bottom of the world - ACEAS
Outreach from the bottom of the world By Neve Clippingdale I have always loved science communication. There is just nothing better than being able to share your enthusiasm for something and seeing som...
antarctic.org.au
April 29, 2025 at 5:15 AM
Reposted by Christina Schmidt
antarcticsciaus.bsky.social
Yesterday, the weather cleared, paving the way for these stunning images from the air 🙌

📷: Pete Harmsen / AAD
April 16, 2025 at 6:53 AM