🌊 The interconnection between sea ice and our #atmosphere is magnificent, and polynyas are vivid representations of it! Our #nextGEMS calendar brings you a spectacular piece of #ScienceArt capturing the magic of polynyas. 🗓️ Our May calendar page, crafted by Thomas Rackow, unveils the breathtaking sight of a #polynya opening in the Canadian Arctic.
🔍 What's a polynya, you ask? It's a fascinating phenomenon in #oceanography — a pocket of open water amidst sea ice, often found in polar regions
Researchers have discovered the missing piece of the puzzle behind a rare opening in the sea ice around Antarctica, that occurred during the winters of 2016 and 2017. It reveals a key process that had eluded scientists as to how the opening, called a polynya, was able to form and persist for several
The Ice Bridge: A Haven for #Seabirds in Pikialasorsuaq
https://www.oceansnorth.org/en/blog/2024/03/the-ice-bridge-a-haven-for-seabirds-in-pikialasorsuaq/
"In early spring, when ice still covers most of #BaffinBay, millions of #birds migrate north to the open waters of #Pikialasorsuaq, a huge #polynya between #Greenland’s west coast and #Canada’s #EllesmereIsland, where they feed and raise their young. Pikialasorsuaq is a very special area. It’s the most productive open water in the #Arctic"
did a radio podcast thing for our #Antarctic voyage - it was a great conversation (Sharon Brettkelly was so on to it) but I rambled as usual - the team at Radio NZ crafted a great (and dare I say important) story. And our PhD student Liv just aced it with enthusiasm to counter my school principal vibe. #DoYourSelfaFavour #climate #oceanography #polynya
https://www.rnz.co.nz/programmes/the-detail/story/2018930763/the-sea-ice-factories-of-antarctica
That was somehow to be expected. Let's see how long this area stays free of ice. Very interesting season!
#Antarctic #WeddellSea #Polynya #MaudRise #Meermittwoch
By the way, there are plenty open positions at @awi to obtain a PhD. Deadline already mid August. One related to Antarctic sea ice: https://jobs.awi.de/Vacancies/1429/Description/2
The NASA Worldview app provides a satellite's perspective of the planet as it looks today and as it has in the past through daily satellite images. Worldview is part of NASA’s Earth Science Data and Information System. ESDIS makes the agency's large repository of data accessible and freely available to the public.
@tobias1hoffmann @ClnHz @seaice
From the operational oceanography side, we get quite frequent images of the #polynya from a variety of satellite missions (radars, optical, passive microwave,...) We have some in-situ obs of the water column.
I do not think we have skillful short-range forecasts of the opening of the #polynya (or I do not know about them).
@tobias1hoffmann @ClnHz @seaice
Hello Tobias. One of the main drivers for having a #polynya at this location is ocean bottom topography, e.g. Holland (2001).
But why it opens some years and not other years is still not settled (?) and apparently linked to weather events (cyclones, atmospheric rivers) e.g. Francis et al. (2019).
But Céline (@ClnHz) know much more than I do !
https://doi.org/10.1126/science.1059322
https://doi.org/10.1029/2019JD030618
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