Name: Workshop: Stratospheric predictability and impact on the troposphere
Start: 2019-11-18T12:30:00+00:00
End: 2019-11-21T17:00:00+00:00
Location: ECMWF

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Sessions*

Poster session

Workshop dinner at Côte Brasserie

Registration and coffee

Ice breaker, drinks and posters

Panel discussion with Joan Alexander, Amy Butler, Ted Shepherd and Günther Zängl

Session 1 : Introductory / motivating talks

Session 2 : Stratosphere-troposphere coupling in sub-seasonal to seasonal modes

Session 4 : Trace gases, ozone, Brewer-Dobson circulation

Session 5 : Model development, impact of model biases

Session 6 : Diagnostics

Working group summaries / discussions and closing

Session 2 (cont.) : Stratosphere-troposphere coupling in sub-seasonal to seasonal modes

Session 3 : Polar vortex : predictability and downward influence

Session 3 (cont.) : Polar vortex : predictability and downward influence

Session 7 : Gravity waves in observations and models

Working groups (with refreshments available in the Weather Room and lobby 15:30-16:00)

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Contributions*

A new approach to linear ozone modelling (in session "Session 5 : Model development, impact of model biases")

A signal and noise analysis of stratosphere-troposphere coupling in sub-seasonal prediction models (in session "Session 2 : Stratosphere-troposphere coupling in sub-seasonal to seasonal modes")

Beyond Traditional Limits of Gravity-Wave Parameterizations: Transient Wave-Mean-Flow Interactions and Unbalanced Mean Flows (in session "Session 7 : Gravity waves in observations and models")

Causes and fixes for stratospheric temperature biases in IFS and their impact on predictability (in session "Session 3 : Polar vortex : predictability and downward influence")

Chemical, radiative and dynamics interactions in the stratosphere using a hierarchy of models (in session "Session 4 : Trace gases, ozone, Brewer-Dobson circulation")

Dependence of simulated atmospheric teleconnections on biases in stratospheric circulation (in session "Session 5 : Model development, impact of model biases")

Dynamics of Sudden Stratospheric Warmings (in session "Session 5 : Model development, impact of model biases")

Global gravity wave distributions observed from satellites and resolved in the ECMWF-IFS (in session "Session 7 : Gravity waves in observations and models")

How does knowledge of atmospheric gravity waves guide their parametrizations? (in session "Session 7 : Gravity waves in observations and models")

How does the Troposphere Amplify Stratospheric Variability? (in session "Session 6 : Diagnostics")

Importance of the stratosphere for extended-range prediction (in session "Session 1 : Introductory / motivating talks")

Investigation of ECMWF IFS Arctic winter 2015/16 lowermost stratosphere moist bias using airborne limb-imaging infrared observations (in session "Session 6 : Diagnostics")

On the dynamics of stratosphere-troposphere planetary-wave coupling (in session "Session 2 : Stratosphere-troposphere coupling in sub-seasonal to seasonal modes")

Recent work at DWD to improve model dynamics and physics in the stratosphere and mesosphere (in session "Session 5 : Model development, impact of model biases")

Remote presentation: Future trends in stratosphere-to-troposphere transport in CCMI models (in session "Session 4 : Trace gases, ozone, Brewer-Dobson circulation")

Remote presentation: Propagating annular modes (in session "Session 6 : Diagnostics")

Remote presentation: Trace Gas Transport in the Stratosphere: Opportunities and Challenges (in session "Session 4 : Trace gases, ozone, Brewer-Dobson circulation")

Stratospheric data assimilation at ECMWF (in session "Session 5 : Model development, impact of model biases")

Stratospheric impact on surface climate on seasonal time scales (in session "Session 2 (cont.) : Stratosphere-troposphere coupling in sub-seasonal to seasonal modes")

Stratospheric impacts of a source-based parameterization of gravity waves generated by flow imbalance (in session "Session 7 : Gravity waves in observations and models")

Stratospheric waves over the Southern Andes (in session "Session 7 : Gravity waves in observations and models")

Subseasonal Forecasting of Sudden Stratospheric Warming Events and their Influence on the Troposphere in the NASA-GEOS-S2S Forecast System (in session "Session 2 : Stratosphere-troposphere coupling in sub-seasonal to seasonal modes")

Subseasonal-to-seasonal predictability of the Southern Hemisphere eddy-driven jet during austral spring and early summer (in session "Session 2 : Stratosphere-troposphere coupling in sub-seasonal to seasonal modes")

Sudden stratospheric warmings in reanalyses and their tropospheric fingerprint (in session "Session 3 : Polar vortex : predictability and downward influence")

The dynamics and predictability of sudden stratospheric warmings and their surface impacts (in session "Session 3 : Polar vortex : predictability and downward influence")

The impact of Arctic sea-ice anomalies on the stratospheric polar vortex (in session "Session 3 : Polar vortex : predictability and downward influence")

The importance of stratospheric initial conditions for winter North Atlantic Oscillation predictability (in session "Session 2 : Stratosphere-troposphere coupling in sub-seasonal to seasonal modes")

The representation of stratosphere-troposphere coupling in S2S models (in session "Session 1 : Introductory / motivating talks")

Using causal discovery algorithms to evaluate troposphere-stratosphere linkages in reanalyses and modelling experiments (in session "Session 6 : Diagnostics")

Welcome and opening

What influences the timing of Sudden Stratospheric Warmings? (in session "Session 3 (cont.) : Polar vortex : predictability and downward influence")

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18/11/2019

19/11/2019

20/11/2019

21/11/2019

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Workshop: Stratospheric predictability and impact on the troposphere

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