Project

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CLimate IMPacts of Utilizing Land in Switzerland and Europe (CLIMPULSE)

Applicant Davin Edouard
Number 172715
Funding scheme Project funding (Div. I-III)
Research institution Institut für Atmosphäre und Klima ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Climatology. Atmospherical Chemistry, Aeronomy
Start/End 01.12.2017 - 30.11.2021
Approved amount 542'398.00
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Keywords (7)

regional climate model; biosphere-atmosphere interactions; land management; land surface modelling; Land use change; biogeophysical processes; climate change

Lay Summary (French)

Lead
L’utilisation des sols par l’Homme, liée à l’agriculture et à l’extraction de ressources forestières, est une des marques les plus visibles de l’influence des activités humaines sur notre planète. Les conséquences environnementales de cette anthropisation des écosystèmes terrestres, qui affecte actuellement environ deux tiers de la surface des continents, sont multiples. En particulier, l’utilisation des sols a un impact sur le climat a l’échelle régionale ou locale par le biais de la modification des propriétés biophysiques de la surface (albédo, évapotranspiration, rugosité, etc.). Ces effets "biophysiques" restent cependant peu ou mal quantifiés. L’émergence de nouvelles méthodes d’observation de la surface terrestre et ses caractéristiques offre une occasion sans précédent de confronter modèles et observations et ainsi d’améliorer la quantification des impacts de l’utilisation des sols sur le climat.
Lay summary

Contenu et objectifs du travail de recherche

Le projet CLIMPULSE a pour but de fournir une évaluation exhaustive des effets biophysiques de l’utilisation des sols en se focalisant particulièrement sur l’Europe et la Suisse. L’une des caractéristiques du projet sera de combiner des observations, notamment satellites, avec des simulations à haute résolution basées sur un modèle climatique régional sophistiqué. En résumé, les objectifs du projet CLIMPULSE sont (i) d’améliorer la compréhension des impacts biophysiques de l’utilisation des sols sur le climat a l’échelle régionale, (ii) de fournir des informations utilisables par les décideurs impliqués dans la planification de l’occupation des sols, notamment sur les conséquences climatiques possibles de différents scénarios futurs d’utilisation des sols en Suisse et (iii) de développer des outils scientifiques opérationnels permettant d’inventorier de façon fiable les impacts biophysiques liés à l’utilisation des sols et ainsi remédier a l’absence de prise en compte de ces effets dans le contexte décisionnel actuel.

Contexte scientifique et social du projet de recherche

La planification de l’utilisation des sols est une composante essentielle des politiques climatiques au niveau national comme international. Cependant, dans ce contexte, seuls les impacts biogéochimiques (par exemple les émissions de gaz à effet de serre) sont considérés et non pas les effets biophysiques. En contribuant à améliorer la compréhension et la quantification de ces effets biophysiques, le projet CLIMPULSE permettra un premier pas vers une prise en compte plus exhaustive du rôle de l’utilisation des sols dans le cadre des politiques climatiques actuelles.

Direct link to Lay Summary Last update: 28.04.2017

Responsible applicant and co-applicants

Employees

Project partner

Publications

Publication
Increasing the broad-leaved tree fraction in European forests mitigates hot temperature extremes
Schwaab Jonas, Davin Edouard L., Bebi Peter, Duguay-Tetzlaff Anke, Waser Lars T., Haeni Matthias, Meier Ronny (2020), Increasing the broad-leaved tree fraction in European forests mitigates hot temperature extremes, in Scientific Reports, 10(1), 14153-14153.
The opposing effects of re/af-forestation on the diurnal temperature cycle at the surface and in the lowest atmospheric model level in the European summer
Breil M., Rechid D., Davin E.L., de Noblet-Ducoudré N., Katragkou E., Cardoso R.M., Hoffmann P., Jach L.L., Soares P.M.M., Sofiadis G., Strada8 S., Strandberg G., Tölle M.H., Warrach-Sagi K. (2020), The opposing effects of re/af-forestation on the diurnal temperature cycle at the surface and in the lowest atmospheric model level in the European summer, in Journal of Climate, 1-58.
Biogeophysical impacts of forestation in Europe: first results from the LUCAS (Land Use and Climate Across Scales) regional climate model intercomparison
Davin Edouard L., Rechid Diana, Breil Marcus, Cardoso Rita M., Coppola Erika, Hoffmann Peter, Jach Lisa L., Katragkou Eleni, de Noblet-Ducoudré Nathalie, Radtke Kai, Raffa Mario, Soares Pedro M. M., Sofiadis Giannis, Strada Susanna, Strandberg Gustav, Tölle Merja H., Warrach-Sagi Kirsten, Wulfmeyer Volker (2020), Biogeophysical impacts of forestation in Europe: first results from the LUCAS (Land Use and Climate Across Scales) regional climate model intercomparison, in Earth System Dynamics, 11(1), 183-200.
Biomass heat storage dampens diurnal temperature variations in forests
Meier Ronny, Davin Edouard L, Swenson Sean C, Lawrence David M, Schwaab Jonas (2019), Biomass heat storage dampens diurnal temperature variations in forests, in Environmental Research Letters, 14(8), 084026-084026.
Evaluating and improving the Community Land Model's sensitivity to land cover
Meier Ronny, Davin Edouard L., Lejeune Quentin, Hauser Mathias, Li Yan, Martens Brecht, Schultz Natalie M., Sterling Shannon, Thiery Wim (2018), Evaluating and improving the Community Land Model's sensitivity to land cover, in Biogeosciences, 15(15), 4731-4757.

Collaboration

Group / person Country
Types of collaboration
Land Change Science, Swiss Federal Institute for Forest, Snow and Landscape Research WSL Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Federal Office of Meteorology and Climatology MeteoSwiss Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Community Terrestrial Systems Model, NCAR United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Communication with the public

Communication Title Media Place Year
Media relations: print media, online media https://www.tdg.chles incendies zombies de l'arctique inquietent les chercheurs Tribune de Genève Western Switzerland 2020
New media (web, blogs, podcasts, news feeds etc.) Kühlen Laub- oder Nadelbäume besser? wissenschaft.de International 2020
Media relations: print media, online media Les feuillus? De meilleurs climatiseurs que les conifères 20 minutes Western Switzerland 2020
Media relations: print media, online media Les incendies risquent de doubler en Amazonie Le Temps Western Switzerland 2020
New media (web, blogs, podcasts, news feeds etc.) Local cooling provided by broad-leaved trees in Europe WSL news International 2020
Media relations: print media, online media Aufforsten bekommt dem bergklima nicht Horizonte German-speaking Switzerland 2019
Media relations: print media, online media Können uns die Wälder retten? Aargauer Zeitung German-speaking Switzerland 2019
Media relations: radio, television Waldsterben SRF 1 Taggeschau German-speaking Switzerland 2019

Awards

Title Year
Best presentation award, Global Land Programme 4th Open Science Meeting 2019

Use-inspired outputs

Software

Name Year
COSMO-RESM 2020


Associated projects

Number Title Start Funding scheme
136273 CarboCount CH: Quantifying greenhouse gas fluxes and their sensitivity to climate variations: A case study in Central Europe and Switzerland 01.01.2012 Sinergia

Abstract

From a global perspective, the anthropogenic increase in CO2 and other trace gases has been by far the main driver of recent climate change. At the regional scale, however, other forcings may play a more important role. In particular, Land Use and Land Cover Change (LULCC) can impact local climate conditions in various ways by altering “biogeophysical” land properties such as albedo, evapotranspiration and surface aerodynamic properties. Although the quantification of these effects is still subject to particularly large uncertainties, there is growing evidence that LULCC may locally affect surface temperature in similar proportions as other climate forcings, for instance in areas strongly affected by deforestation or other land management changes. Despite this realization, LULCC is still largely ignored in current Regional Climate Models and resulting regional or national climate change assessments, as is the case in the Swiss Climate Change Scenarios national reports (CH2011 and CH2014). Furthermore, biogeophysical effects of LULCC are not accounted for in national and international climate protocols, certainly in part due to the lack of scientific consensus and appropriate biogeophysical metrics. The recent emergence of new observational evidence of the local biogeophysical effect of land cover changes offers an unprecedented opportunity to confront models and observations and tackle the currently large uncertainties. CLIMPULSE aims to provide the first exhaustive assessment of biogeophysical impacts of LULCC at the European scale with a focus on Switzerland. This will be done by combining observational data, in particular from remote sensing, and model experiments with a state-of-the-art regional climate model. Past impacts of LULCC will be quantified with a particular attention to the recent reforestation trend over the past 40 years in Europe and more specifically over the Swiss Alps. The regional model will be evaluated against observations, further improved in particular with respect to the representation of land management and finally used to produce high-resolution climate projections under a range of future land use scenarios.Overall, the CLIMPULSE project will 1) improve our understanding of past biogeophysical impacts of LULCC on regional climate, 2) deliver policy relevant information about the climatic consequences of a range of possible future land use trajectories for Switzerland and 3) provide the necessary scientific foundations and tools toward monitoring and integrating biogeophysical effects of LULCC in a policy context.
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