Workshop: Stratospheric predictability and impact on the troposphere
from Monday, 18 November 2019 (12:30) to Thursday, 21 November 2019 (17:00)
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Monday, 18 November 201912:3012:30 - 13:15Room: Weather Room13:15 Welcome and opening - Nils Wedi (ECMWF)Welcome and opening
- Nils Wedi (ECMWF)
13:15 - 13:3013:3013:30 - 15:00Contributions-
13:30 Importance of the stratosphere for extended-range prediction - Ted Shepherd (University of Reading)
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14:15 The representation of stratosphere-troposphere coupling in S2S models - Amy Butler (CIRES/NOAA)
15:0015:00 - 18:00Contributions-
15:00 A signal and noise analysis of stratosphere-troposphere coupling in sub-seasonal prediction models - Andrew Charlton-Perez (University of Reading)
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16:00 The importance of stratospheric initial conditions for winter North Atlantic Oscillation predictability - Christopher O'Reilly (University of Oxford)
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16:30 Subseasonal-to-seasonal predictability of the Southern Hemisphere eddy-driven jet during austral spring and early summer - Nick Byrne (University of Reading)
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17:00 On the dynamics of stratosphere-troposphere planetary-wave coupling - Etienne Dunn-Sigouin (Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research)
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17:30 Subseasonal Forecasting of Sudden Stratospheric Warming Events and their Influence on the Troposphere in the NASA-GEOS-S2S Forecast System - Joan Alexander (NWRA)
18:0018:00 - 19:30Room: Weather Room; Lobby -
Tuesday, 19 November 201909:0009:00 - 09:30Contributions
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09:00 Stratospheric impact on surface climate on seasonal time scales - Steven Hardiman (Met Office)
09:3009:30 - 12:00Contributions-
09:30 The dynamics and predictability of sudden stratospheric warmings and their surface impacts - Daniela Domeisen (ETH Zurich)
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10:00 Causes and fixes for stratospheric temperature biases in IFS and their impact on predictability - Inna Polichtchouk (ECMWF)
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11:00 Sudden stratospheric warmings in reanalyses and their tropospheric fingerprint - Blanca Ayarzagüena (Universidad Complutense de Madrid)
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11:30 The impact of Arctic sea-ice anomalies on the stratospheric polar vortex - William Seviour (University of Bristol)
12:0012:00 - 13:0013:00 LunchLunch13:00 - 14:0014:0014:00 - 15:3015:30 Coffee breakCoffee break15:30 - 16:00Room: Weather Room; Lobby16:0016:00 - 16:30Contributions-
16:00 What influences the timing of Sudden Stratospheric Warmings? - Lesley Gray (NCAS / University of Oxford)
16:3016:30 - 18:00Contributions-
16:30 Remote presentation: Future trends in stratosphere-to-troposphere transport in CCMI models - Marta Abalos (Universidad Complutense de Madrid)
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17:00 Remote presentation: Trace Gas Transport in the Stratosphere: Opportunities and Challenges - Edwin Gerber (Courant Institute, New York University)
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17:30 Chemical, radiative and dynamics interactions in the stratosphere using a hierarchy of models - Alison Ming (University of Cambridge)
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Wednesday, 20 November 201909:0009:00 - 12:00Contributions
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09:00 Recent work at DWD to improve model dynamics and physics in the stratosphere and mesosphere - Günther Zängl (Deutscher Wetterdienst)
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09:30 A new approach to linear ozone modelling - Tim Stockdale (ECMWF)
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10:00 Dependence of simulated atmospheric teleconnections on biases in stratospheric circulation - Alexey Karpechko (Finnish Meteorological Institute)
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11:00 Dynamics of Sudden Stratospheric Warmings - Presenting on behalf of Thomas Birner (University of Munich): Álvaro de la Cámara (Universidad Complutense de Madrid)
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11:30 Stratospheric data assimilation at ECMWF - Elias Holm (ECMWF)
12:0012:00 - 15:00Contributions-
12:00 How does the Troposphere Amplify Stratospheric Variability? - Mark Baldwin (University of Exeter)
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12:30 Using causal discovery algorithms to evaluate troposphere-stratosphere linkages in reanalyses and modelling experiments - Marlene Kretschmer (PIK)
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14:00 Remote presentation: Propagating annular modes - Aditi Sheshadri (Stanford University)
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14:30 Investigation of ECMWF IFS Arctic winter 2015/16 lowermost stratosphere moist bias using airborne limb-imaging infrared observations - Wolfgang Woiwode (Karlsruhe Institute of Technology, IMK-ASF)
15:0015:00 - 17:30Room: Council Chamber; Large Committee Room, Lecture Theatre19:0019:00 - 21:00 -
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Thursday, 21 November 201909:0009:00 - 12:15Contributions
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09:00 Global gravity wave distributions observed from satellites and resolved in the ECMWF-IFS - Peter Preusse (Forschungszentrum Juelich)
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09:30 Stratospheric waves over the Southern Andes - Andreas Dörnbrack (DLR Oberpfaffenhofen, Institute of Atmospheric Physics)
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10:00 Beyond Traditional Limits of Gravity-Wave Parameterizations: Transient Wave-Mean-Flow Interactions and Unbalanced Mean Flows - Ulrich Achatz (Goethe Universität Frankfurt)
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11:15 How does knowledge of atmospheric gravity waves guide their parametrizations? - Riwal Plougonven (LMD/IPSL, Ecole Polytechnique)
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11:45 Stratospheric impacts of a source-based parameterization of gravity waves generated by flow imbalance - Álvaro de la Cámara (Universidad Complutense de Madrid)
12:1512:15 - 13:0013:00 LunchLunch13:00 - 14:00 -