Kalender

Sign up for lunch latest by Monday, October 6:  https://forms.gle/qBUetd3AZf25nrWw5

If you have already registered and are still participating, you don't need to sign up again.

Best, 

Lucía on behalf of the LBE consortium

The meeting will be hybrid and you can join remotely via Zoom: https://uib.zoom.us/j/62886269543?pwd=ajWbi97zr0hbniaoQdZkUtD2EUSSri.1
Meeting ID: 628 8626 9543 | Password: qSKTfKU3

The meeting schedule for this semester is in the following google doc.

https://docs.google.com/document/d/1yjicxkFp_8Y17LVftgksb1SnqSUSUXogg0pOFZfbK0g/edit?usp=sharing 

See you all on Wednesday! :)

Cheers,
~Hari and Yangfan

Zoom: https://uib.zoom.us/j/68473038190?pwd=T3JzY0Z5UXQ4ZUdmcE56c0VrcFhhQT09

Niels Dutrievoz – “Water vapour isotopes in Antarctica as tracers of boundary layer processes and large-scale dynamics”

The study of water isotopes connects two complementary fields: reconstructing past climates from ice cores and analysing the present-day Antarctic water cycle. Understanding the climatic and atmospheric drivers of isotopic signals in vapour and snow—archived in firn and ice—is key to interpreting past variability and anticipating future changes in surface mass balance. Such understanding requires models that integrate both large-scale moisture transport and air–snow exchanges. The aim of this PhD thesis is to improve our understanding of the Antarctic water cycle using isotopes as tracers of boundary-layer processes and large-scale dynamics, through a combined approach of observations and modelling with LMDZiso. First, we assess model performance over Antarctica and identify optimal configurations to minimise isotopic biases. We then investigate isotopic variability in vapour: at Concordia, East Antarctica Plateau (3233m), diurnal cycles are mainly controlled by surface fluxes, while at Dumont d’Urville, a coastal site, they result from both surface fluxes and katabatic advection. The analysis of two atmospheric river events (December 2018 and March 2022) reaching Concordia shows that isotopic variability cannot be explained by synoptic transport alone and requires a detailed representation of local boundary-layer processes. Then we investigate snow–vapour isotopic fluxes. We improve the agreement between the observed and simulated amplitudes of the diurnal cycle of vapour isotopes by introducing fractionation during sublimation and by applying the same formulation for isotopic condensation. Adding an active snow layer of about one centimetre further improves the representation of vapour isotopic anomalies during the March 2022 atmospheric river characterised by intense snowfall. All of these results provide a better understanding of the processes controlling atmospheric isotopic variability in Antarctica and improve the representation of the isotopic signal archived in snow, thereby opening promising perspectives on the interpretation of ice cores.

Zoom details https://uib.zoom.us/j/62554083320

Password: bScc54hk!

The Bjerknes Proposal Writing Class (Bjerknes proposal writing training 2) is an offer to scientists at the Bjerknes Centre who plan to submit a project proposal in 2026 and have little or no experience yet in proposal writing. By taking the class, you will consecutively develop your idea into a proposal draft and finally, a complete proposal ready to submit within the deadlines of 2026. This writing class will complement the support you get from your academic supervisor or scientific mentor but cannot replace that kind of support.

Lectures online on zoom. Link to all the lectures: (will follow)

Link to the special seminar: (will follow)

Link to all teaching material: (will follow)

Class format and time effort:

Weekly alternating lectures and writing seminars

Lecture-sessions consist of 1 hour lecture + up to 30 minutes question/discussion online: background and guidelines for a specific proposal aspect, instructions for specific remote work on your proposal;

Writing sessions consist of 1 hour writing on-site: perform remote work, present results and get feedback.

Remote work:

1-2 hours/week remote work on your proposal (in addition to writing seminars)

To be performed by the next class 

Individual meetings with assigned adviser and/or scientific mentor on demand 

You will get individual written feedback on your remote work from your assigned adviser

Imperfect and tentative individual work is better than no remote work!

Mathias Venning disputerer 14.11.2025 for ph.d.-graden ved Universitetet i Bergen med avhandlingen "Enacting a Global Vision for Climate Services". Les mer her: Brobygging over brukbarhetskløften i klimatjenester | Nye doktorgrader | UiB