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The Polar Winter Atmosphere from Troposphere to Mesosphere - coupling mechanisms, forcing and feedback

02.02.2015 - 06.02.2015

Dates: 02.02.2015-06.02.2015

A collaboration between Bjerknes Centre for Climate Research and Birkeland Centre for Space Science

Location: Bergen

Duration: 5 days

Target group: Master and PhD students within meteorology, atmosphere dynamics, and space physics. Researchers not aiming to get the student credits can choose to only attend the lectures.

Estimated student credits: 2ECTS (attendance) / 5 ECTS (approved assignment) *

Registration form is found at the bottom of this page.

Registration deadline: January 26th 2015.

Participants not from Bergen are asked to book travel and accommodation.


There are strong indications that seasonal weather forecasts can be improved by including the middle atmosphere. Also, the middle atmosphere structure and dynamics cannot be described without taking into account the forcing from below. We focus on the interdependence of the different atmospheric layers and the mechanism coupling them together, in particular in respect to potential solar forcing.

Scheduled lectures:

Monday: Solar variability forcing

12:30-13:00: Welcome
Thomas Toniazzo and Hilde Nesse Tyssøy

13:15-15:00: Solar variability in the atmosphere: Photons
Robert Hibbins

15:15-17:00: Solar variability in the atmosphere: Particles
Hilde Nesse Tyssøy

Tuesday: The Northern Winter atmosphere and its anomalies

09:15-11:30: Climatology of the Hemispheric winter circulation, from top to bottom and vice versa.

(Thomas Toniazzo, Hilde Nesse Tyssøy)

13:15-16:00: Observed anomalies of the Hemispheric winter circulation across altitudes

(Yvan Orsolini, Thomas Spengler)

Wednesday: The Northern Winter atmosphere and its anomalies (cont.)

09:15-11:00: Interhemispherical impact (mesosphere)

(Patrick Espy)

13:00-15:00 Stratosphere/Troposphere coupling

(Haraldur Olafsson)

Thursday: Recent and historical long-period variability and hypothesized feedback mechanisms

09:15 - 11:00: Geomagnetic activity and polar surface air temperature variability
(Annika Seppälä)

13:15-15:00: Ozone climate interactions in the stratosphere
(Frode Stordal)

16:00-: Discussion assignment

Friday: Models

09:15-11:00: Models and forecasts

(Jeff Knight)

12:00-: Discussion assignment



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