News

October 28, 2024 - Invited talk at the NCKF Climate Research Symposium, Copenhagen, Denmark

Extreme events in climate models: Diagnosing temperature extremes in climate models: pitfalls and prospects

October 14-18, 2024 - Participation at the nextGMES Hazard Hackathon, Wageningen, Netherlands

Co-lead of the data handling/extreme index challenge

October 11, 2024 - Guest lecture University of Vienna

Klimarecht im intra- und interdisziplinären Dialog: Naturwissenschaftliche Grundlagen der Klimakrise

October 3, 2024 - HighResLearn Kick Off

July 18, 2024 - Guest lecture / Invited talk Universität Freiburg

ClimateGeography talk: Are we miscalculating how heatwaves change?

July 12, 2024 - Blog post on the nextGEMS blog

nextGEMS blog post about Brunner and Sippel (2023): Using Machine Learning to identify climate models

May 1, 2024 - New position at Universität Hamburg

Climate Extremes group, Research Unit Sustainability and Climate Risks: News article

April 26, 2024 - New publication

O’Reilly C., Brunner L., Qasmi S., Nogherotto R., Ballinger A., Booth B., Befort D., Knutti R., Schurer A., Ribes A., Weisheimer A., Coppola E., and McSweeney C. (2024): Assessing observational constraints on future European climate in an out-of-sample framework, npj Climate and Atmospheric Science, PDF Supplement

April 17, 2024 - Mentioned in Media

• Der Standard (in German): Hohe Wahrscheinlichkeit für noch extremere Hitzewellen in Europa
• Die Presse (in German): Forscher: Europa muss mit längeren und intensiveren Hitzewellen rechnen
• orf.at (in German): Europa drohen extreme Hitzewellen

April 15-19, 2024 - EGU24

Session convener: Regional Climate Modeling, Including CORDEX and Constraining Global Multi-Model Ensembles: Link

Oral presentation: Revealing a systematic bias in percentile-based temperature extremes (PDF)
Vienna, Austria | Abstract on the conference homepage: Link

Mentor in the EGU mentoring programme: Link

April 3-4, 2024 - Presentation Österreichischer Klimatag

Revealing a systematic bias in temperature extremes and its implications (PDF)
Vienna, Austria | Conference homepage (in German): Link

March 20, 2024 - Mentioned in Media

Die Presse (in German): Irrtum der Experten: Es gibt mehr Hitzetage

March 18, 2024 - New publication

Brunner L. and Voigt A. (2024): Pitfalls in diagnosing temperature extremes, Nature Communications, PDF, Supplement, Review files

Related material:

• Hajek S. (2024): Analyse eines Fehlers in der Definition der Hitzemetrik Cumulative Heat, Bachelor thesis supervised by L. Brunner and A. Voigt, PDF (in German)
• Meindl M. (2024): Changes in heatwave properties under climate change, Master’s thesis supervised by L. Brunner and A. Voigt, PDF
• Poster (PDF)
• Presentation (PDF)
• Short presentation (PDF)

Daily maximum air temperature over 30 seasonal cycles (thin black lines), thresholds (thick red line), exceedances (red shading), and monthly averaged frequencies (bars) for a selected grid cell in the North Atlantic (figure 1c in the main paper).

March 13, 2024 - Keynote Deutsche Klimatagung (Potsdam, Germany)

Conference homepage: 13. Deutsche Klimatagung
Systematic errors in temperature extreme definitions and their impacts (PDF)

March 4-8, 2024 - Participation 4th km-scale Hackathon (Hamburg, Germany)

February 13, 2024 - Talk Climate Analytics (Berlin, Germany)

Pitfalls in diagnosing temperature extremes

January, 2024 - PI project funded

• Title: High-resolution machine learning for the climate community in Austria (HighResLearn)
  
• Funding call: Austrian Climate Research Programme (ACRP) 2023
  
• Partners: University of Innsbruck, GeoSphere Austria, Change Centre Austria (CCCA)
  
• Cooperation: Klimadashboard - Verein zur Förderung datenbasierter Berichterstattung und Bewusstseinsbildung zur Klimakrise, University of Graz, Max-Planck-Institute for Meteorology (Hamburg), University of Leipzig
  More information
  
  

(c) MPI-M/DKRZ

November 16, 2023 - Guest speaker in Green Finance seminar

Naturwissenschaftliche Grundlagen der Klimakrise

November 13, 2023 - Research price Vorarlberg for young researchers

Press release (in German): link

October 19, 2023 - Guest talk by Katharine Hayhoe

I managed to invite Katharine Hayhoe for a keynote on very short notice. Here’s a summary of her talk: link

August 23, 2023 - New publication

Merrifield A. L., Brunner L., Lorenz R., Humphrey V., and Knutti R. (2023): Climate model Selection by Independence, Performance, and Spread (ClimSIPS v1.0.1) for regional applications, Geosci. Model Dev., PDF, Supplement

August 24, 2023 - Food For Though session at the EFA23

Session on “Data sparks action: the role of information in tackling the climate crisis” together with David Jablonski

August 2023

Participation at the European Forum Alpbach 2023 (EFA23)

July 2023

Blog article about a visit at the Vienna Scientific Cluster during the Lecture Modelling and Data anaysis: Klimamodelle am Vienna Scientific Cluster

July 16, 2023 - Presentation at IUGG 2023

Session: Diagnosing and Reducing Errors and Biases in Weather and Climate Models
Distinguishing climate models on short time scales using a neural network

July 3, 2023 - New publication

Brunner L. and Sippel S. (2023): Identifying climate models based on their daily output using machine learning, Env. Data Sci., PDF, Supplement

Confusion matrix showing the frequency of predicted versus true labels. The main diagonal shows correct predictions using green shading, purple shading indicates misclassifications within a model family, and red shading indicates other misclassifications. Two cases are singled out: assignments within the HadGEM family and confusions between models and the two reanalyses ERA5 and MERRA2.

May 2023 - Research price 2023 for young scientists from the state of Vorarlberg

Press release: link (in German)

May 25, 2023 - Talk Leipzig Institute for Meteorology, Leipzig University

May 15, 2023 - Talk Institute for Meteorology Colloqium, FU Berlin

May 9, 2023 - Talk Climate statistics and extremes group, Universität Hamburg

May 2023 - Research stay FU Berlin

April 28, 2023 - Presentation at EGU23

Session: Machine Learning for Climate Science
Separation of climate models and observations based on daily output using two machine learning classifiers

April 21, 2023 - New publication

Palmer T. E., McSweeney C.F., Booth B. B. B., Priestley M. D. K., Davini P., Brunner L., Borchert L., and Menary M. B. (2023): Performance based sub-selection of CMIP6 models for impact assessments in Europe, Earth Syst. Dynam., PDF

March 24, 2023 - Invited talk Global Carbon Budget workshop

Online
Some practical thoughts on model weighting

January 18, 2023 - Guest speaker in Green Finance seminar

Vienna, Austria | u:find entry: Link
Naturwissenschaftliche Grundlagen der Klimakrise: PDF

January 13, 2023 - Klimaszenarien.AT kick-off

Online | News item (in German): Link

November 14 - 19, 2022 - Participation at the UN Climate Conference (COP27)

Sharm El-Sheikh, Egypt | Homepage: Link
univie Blog article: Link

November 7, 2022 - Article Rudolphina

Hitze, Dürre, Flut: Sind Katastrophen das neue Normal? (in German)

October 27, 2022 - Interview Ö1 Kinderuni

Wie entstehen Wolken? (in German)

October 10, 2022 - New publication

Gründemann G. J, van de Giesen N., Brunner L., and van der Ent R. (2022): Rarest rainfall events will see the greatest relative increase in magnitude under future climate change, communications earth & environment PDF

October 7, 2022 - Workshop Inspirationstag der Erzdiözese Wien

Vienna, Austria | Topic: Naturwissenschafltiche Grundlage der Klimakrise PDF

August 3, 2022 - New preprint

Palmer T. E., McSweeney C.F., Booth B. B. B., Priestley M. D. K., Davini P., Brunner L., Borchert L., and Menary M. B. (2022): Performance based sub-selection of CMIP6 models for impact assessments in Europe, Earth Syst. Dynam. Diss., PDF

July 11, 2022 - Participation kinderuni: Mittendrin im Klimalabor

Vienna, Austria | Homepage (German): Link

Picture: © Griwank

June 25, 2022 - New publication

Befort D. J., Brunner L., Borchert L. F., O’Reilly C. H., Mignot J., Ballinger A. P., Hegerl G. C., and Murphy J. M. (2022): Combination of decadal predictions and climate projections in time: Challenges and potential solutions, Geophys. Res. Lett. PDF

Example of inconsistencies introduced by concatenation of decadal predictions and climate projections. Time series of near-surface air temperatures over Northern Europe region (NEU) for a) uninitialized climate projections from 1976 to 2001 b) decadal predictions from 1976 to 1985 (initialized in 1975) and climate projections from 1986 to 2001.

June 28 - July 2, 2022 - Participation at the NextGEMS hackathon

Vienna, Austria

Picture: © NextGEMS

June 15 - 18, 2022 - Participation at the The Future of the Earth performance

Pratteln, Switzerland & virtual | Project homepage and live stream: Link
More impressions here

May 27, 2022 - Presentation at the EGU General Assembly 2022

Investigating 25 years of coupled climate modeling | Abstract: PDF
Vienna, Austria | Conference homepage: Link

May 19, 2022 - New preprint

Brunner L. and Sippel S. (2022): Separation of climate models and observations based on daily output using machine learning, submitted to Env. Data Sci. / available on EarthArXiv, PDF

Logistic regression coefficients learned from daily data in the period 1950-1999 and used to separate daily temperature maps from models and observations.

May 12, 2022 - Poster presentation at the Climate Informatics Conference

Classifying climate models based on temperature patterns from a single day using a convolutional neural network
Virtual | Conference homepage: Link

May 4, 2022 - Presentation at nextGEMS meeting

Separating models and observations based on daily temperatures using machine learning
Virtual | Project homepage: Link

May 4, 2022 - Presentation at the EUCP workshop 2022

Constraining European projections - EUCP progress towards a unified method (PDF)
Virtual | Project homepage: Link

April 21, 2022 - Poster presentation at the Austrian Klimatag 2022

Gewichtung von Klimamodellen reduziert die prognostizierte globale Erwärmung in CMIP6 (PDF)
Vienna, Austria | Conference homepage (in German): - Link

February 4, 2022 - Presentation at the DACH Quality control methods meeting

Constraining Future European Climate from GCMs - Methods, Results, and Ways Forward, PDF
Virtual

February 3 - 4, 2022 - Session chair and presentation at the CliMatters workshop

Uncertainty in climate modeling and projections (session) | Separating Uncertainties in Projections of Future Climate – Importance, Lessons, and Solutions, PDF
Virtual | Workshop homepage: Link

January 18, 2022 - Presentation at the University of Vienna Meteorological/Geophysical Colloquium

Weighting models by performance and independence - Effects on projections of future climate, PDF
Virtual | Department homepage: Link

Older (selection)

November 16, 2021 - Keynote at the EC-Earth meeting

Uncertainties in multi-model assessments of future climate, PDF
Virtual | Meeting homepage: Link

October 21, 2021 - Invited talk at the Wegener Center Common Space seminar (University of Graz)

Weighting models by performance and independence - Effects on projections of future climate, PDF
Virtual | Institute homepage: Link