Université Grenoble Alpes, Irstea, 2. Météo-France - CNRS, Grenoble, France * pierre.spandre@irstea.fr

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1 PICO #.0 EGU, 2 Apr. 206 Integration of snow management into a detailed snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. Université Grenoble Alpes, Irstea, 2 Météo-France - CNRS, Grenoble, France * pierre.spandre@irstea.fr S. Morin

2 PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. Why integrating snow management? Snow on ski slopes highly differ from natural snow (Fahey et al.,999; Rixen et al., 200; Fauve et al., 2002) Scientists Impact of current methods (Howard and Stull, 204; Hanzer et al., 204) Interaction with climate change (Marke, 204; Scott, 2003; Steiger, 200) Resorts stakeholders (policy makers, operators) Investments decision (Tawöger, 204; Hopkins, 203) Optimization Spandre et al., 206

3 PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. Scheme of the new model «Crocus-Resort» Spandre et al., 206

4 PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. Literature review (Howard and Stull, 204; Hanzer, 204; Guily, 99; Fauve, 2002) Modelling approach Snow management practices Interviews with profesionnals Snow management practices Observation-based expertise Field observations Evaluation Sources of development Spandre et al., 206

5 PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. Visit PICO #.0! «Integrating snow management processes into a detailed snowpack model» Spandre et al., 206

6 PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. Contents «2-minutes madness» slides Grooming approach Snowmaking approach About the uncertainty on water losses Spandre et al., 206 #. #.4 More details on our research in PICOs #.5

7 PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. Grooming: physical approach Static weight => Densification Tiller effect Mixing effect Densification Modification of snow microstructure Spandre et al., 206

8 PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. Grooming: practices approach Spandre et al., 206

9 PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. Grooming: evaluation Seasonal evolution Stratigraphies Spandre et al., 206

10 PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. Snowmaking: physical approach Initial properties specified Density (600 kg/m 3 ) Specific Surface Area (25 m 2 kg - ) Sphericity (90%) mm Production flow rate specified Wet-bulb temperature threshold specified Maximum wind speed (4.2 m s - ) Spandre et al., 206

11 Snowmaking: practices approach PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. Spandre et al., 206

12 PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. Snowmaking: evaluation Seasonal evolution Stratigraphies Spandre et al., 206

13 PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. About the uncertainty on water losses Seasonal evolution of snowpacks with R = 00% to 0% of the total water volume used by snowmakers More details on this question in PICO #. Spandre et al., 206

14 PICO #.0 Integrating snow management into a snowpack model Spandre P.,2,*, Morin S. 2, Lafaysse M. 2, Lejeune Y. 2, François H., George-Marcelpoil E. For more details Spandre, P., Morin, S., Lafaysse, M., George-Marcelpoil, E., Francois, H., Lejeune, Y., 206. Integration of snow management processes into a detailed snowpack model. Cold Regions Science and Technology doi :0.06/j.coldregions Spandre et al., 206 #. #.4 More details on our research in PICOs #.5

INTEGRATING SNOW MANAGEMENT PROCESSES AND PRACTICES INTO A DETAILED SNOW- PACK MODEL. RELEVANCE, APPLICATIONS AND PROSPECTS

INTEGRATING SNOW MANAGEMENT PROESSES AND PRATIES INTO A DETAILED SNOW- PAK MODEL. RELEVANE, APPLIATIONS AND PROSPETS Spandre P. 1,2, Morin S. 2, George-Marcelpoil E. 1, Lafaysse M. 2, Lejeune Y. 2, François