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The second Swiss National GAW/GCSO Symposium took place on 25 and 26 March 2026 in Ittigen, Bern. Around 100 experts of the GAW-CH and GCOS-CH communities came together to showcase achievements, set priorities for the implementation of the GAW and GCOS programmes and spark ideas for innovative approaches across the broeader Swiss GAW and GCOS communities. There were two Keynotes by Laurence Rouil (ECMWF) and Felix Seidel (Geolab) and 16 presentations by experts of different institutions and fields. Beside the presentations, there were around 30 posters presented.
Please find the Slides of the presentation as well as the presented Poster on this website.
| Day 1 | ||
|---|---|---|
Opening A lot has happened since 2021. | Paolo Laj, Antonio Bombelli, | |
Keynote: AI/ML – from NWP to atmospheric composition forecasting, a game changer Laurence Rouil, Director of CAMS, ECMWF | Laurence Rouil, ECMWF | 0.3 |
Recent Progress Presentations of the projects funded | Gunter Stober,
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| Matthias Huss, ETH Zurich | 1.2 | |
| Jan Dirk Wegner, University of Zurich | 1.3 | |
Stavros Stagakis, Dominik Brunner, |
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Increasing Importance of Earth system observations are | Gerrit Kuhlmann,
| 2.1 |
| Michael Brechbühler, Eawag | 2.2 | |
| Martin Hoelzle, University of Fribourg | 2.3 | |
| Gregory Giuliani, University of Geneva | 2.4 |
| Day 2 | ||
|---|---|---|
Keynote: ETH Swiss GeoLab – Transforming Felix Seidel, Managing Director, ETH Swiss GeoLab | Felix Seidel,
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New Generation of Scientific Leadership in Recently several Swiss GAW and GCOS key scientist | Claudia Mohr,
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| Eliza Harris, University of Bern | 3.2 | |
| Timofei Sukhodolov, PMOD | 3.3 | |
| Benjamin Stocker, University of Bern | 3.4 | |
Earth System Data for Impactful Applications Earth system observations address fundamental | Stephan Henne,
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| Regula Mülchi, MeteoSwiss | 4.2 | |
| Nadine Salzmann, SLF | 4.3 | |
| Fabia Hüsler, FOEN | 4.4 |
| Increasing Importance of Earth System Data | ||
|---|---|---|
| Accurate in-situ monitoring of UTLS water vapor by laser absorption spectroscopy | S. Brunamonti, Empa | 1 |
| URS – an open access platform for standardized Swiss urban climate data | M. Burger, University of Bern | 2 |
| A cryogenically cooled radiometer, for middle atmospheric water vapor retrievals | A. Filinis, University of Bern | |
| Assessment of summer drying in Switzerland – with focus on observational soil moisture and runoff data | M. Hirschi, ETH Zurich | 4 |
| Renewal of the FTIR platform at Jungfraujoch: first characterization of the performance of the new equipment | E. Mahieu, University Liège | |
| Swiss H2O Hub observations of post Hunga-Tonga UTLS water vapor with balloon-borne frost point hygrometers | Y. Poltera, University of Bern | 6 |
| Automatization of the totalizer network in Switzerland: results of the pilot phase | M. Rohrer, Meteodat | 7 |
| Standardizing atmospheric measurements of halogenated VOCs based on SI-traceability | D. Roos, Metas | 8 |
| GAW QC – an interactive dashboard to facilitate quality control of in situatmospheric composition measurements | M. Steinbacher, Empa | 9 |
| The Quality Assurance / Science Activity Centre Switzerland of WMO's Global Atmosphere Watch Programme | M. Steinbacher, Empa | 10 |
| Development and Application of the Peltier Cooled Frostpoint Hygrometer (PCFH) for Water Vapor Measurements up to the Lower Stratosphere | F. Wienhold, ETH Zurich | 11 |
| Three Decades of WCC‑Empa Audits: Strengthening Traceability and Data Quality in the GAW Network | C. Zellweger, Empa | 12 |
| Towards Stand-Alone Monitoring of Carbonaceous Aerosol: FATCAT Measurements and Thermogram-Based Interpretation | A. Keller, FHNW | 13 |
| Day 2 | ||
|---|---|---|
| From Dust Storms to Wildfire Smoke: Extreme Events Shaping a Decade of Aerosols at Jungfraujoch | B. Brem, PSI | 1 |
| ICOS Switzerland: The Swiss Contribution to a Pan-European Environmental Research Infrastructure | S. Burri, ETH Zurich | 2 |
| A 3D radiation model for urban ecophysiology modelling | G. Cavalcabo’, University of Basel | 3 |
| Detection and 24-year climatology of the frequency and mass of Saharan dust at the high-altitude site Jungfraujoch | M. Collaud, MeteoSwiss | 4 |
| High-resolution seasonal soil moisture maps for Swiss forests | A. Dietzel, WSL | 5 |
| Detecting drought impacts on ecosystem physiology from multispectral, thermal, and meteorological remote sensing data. | Y. El-Mejjaouy, University of Bern | 7 |
| Where do city trees get their water? Urban density effects on tree water uptake in Zurich | S. Emberger, ETH Zurich | 8 |
| Automatic and real-time Swiss pollen monitoring network | S. Erb, MeteoSwiss | 9 |
| A physically based approach to compensate for shadow effects in imaging spectroscopy data | L. Groeneveld, University of Zurich | 10 |
| Permafrost evolution in the Swiss Alps based on 25 years of coordinated observation | J. Noetzli, SLF | 12 |
| GNSS-IR for snow and soil moisture retrieval | B. Soja, ETH Zurich | 13 |