Editor’s choice!

I just learnt that Svenja Ryan’s paper (with the exceptionally prolonged title?) “Exceptionally Warm and Prolonged Flow of Warm Deep Water toward the Filchner‐Ronne Ice Shelf in 2017” (GRL) was highlighted in Science as “Editor’s choice“! The editor gets some of the details wrong – but still, how cool isn’t that? Congratulations Svenja! I’m so proud to be a co-author!

In the highlighted paper we present the latest data from the southern Weddell Sea (including temperature time-series from one of my LoTUS-buoys  that I tell about here), which reveal that 2017 was a special year. The seasonal inflow of warm water that we typically observe to flood the continental shelf during summer was warmer and longer than normal, and we suggest that the anomalous conditions are linked to a fresh anomaly developing upstream as a consequence of high summer sea ice melt. The presented mooring records end early 2018 –  showing that the shelf density then was lower than normal, potentially leaving the “door open” for an earlier than normal onset of next year’s inflow.

Hopefully Polarstern (and I!) make it back to the Weddell Sea this winter (despite Corona) to recover the moorings deployed in 2018, so that we can tell the rest of the story and learn more about the implications of freshwater anomalies.

Ice berg in the Weddell Sea Photo: E. Darelius






COSMUS – a multidisciplinary expedition to the Weddell Sea in 2021

Today I’ve been listening in on the COSMUS cruise-planning meeting at AWI in Bremerhafen – it’s been great to hear all the groups that are joining the cruise tell about the exciting research that they are planning! During 75 days  – no that’s not a typo, 75 days or almost eleven weeks* – at sea, physical oceanographers, sea-ice physicists, all sorts of biologists and bio-geo-chemists will live and work onboard Polarstern – and people will do so many cool things! There will be bottom landers that measures the oxygen consumption of benthic fauna, bottom crawlers that map the ocean floor at millimeter precision, microplastic filtering, profiling with high cameras to quantify the amount of sinking organic matter… and off course plenty of good old CTDs and moorings! There will also be seal tagging, and I was excited to see my name in the group of people that gets to go on the ice and actually meet the beasts up close!

I joined Polarstern on a cruise in 2005, when I’d just started on my PhD. I bet many things will have changed – but rumours has it that “Zillertal” (the small bar) is still around!

Joining Polarstern in Cape Town for my first Antarctic cruise in 2004. In 2021 I’ll do it once again.

*I didn’t tell my husband yet that the cruise will be that long, not quite sure about how to break the news… I’ve been told to tell things like that when there are lots of people around – and preferably nice food on the table… but I’m not sure about that one!

Are you thinking of a PhD in physical oceanography?

Then come and join us! We are currently have one PhD position at the University of Bergen (apply here*, deadline 10/1, 4 years) and one position at the Norwegian Polar Institute in Tromsø (apply here, deadline 7/1, 3 years) open. Both candidates will work on processes related to oceanic heat transport and melting ice shelves in the Weddell Sea, Antarctica – an exciting topic! If you’ve got questions about the positions, then don’t hesitate to contact me!

*The position in Bergen is announced only in Norwegian since it includes 25% duty work related to the project “EkteData” which aims to increase the interest for math and science among high school students. The candidate must therefor speak a Scandinavian language.