In order to study snow cover variations across the latest years, the daily maps of snow depth are here 2-monthly aggregated. The used aggregation functions are the following:

• mean: mean snow depth in the selected 2-month period;
• min: minimum snow depth in the selected 2-month period;
• q25,q50,q75,q90: respectively 25th,50th (median),75th,90th percentiles of snow depth in the selected 2 month period;
• max: maximum snow depth in the selected 2-month period;
• sd: standard deviation of daily snow depth in the selected 2-month period;
• snow cover duration: number of days with snow depth greater than 5 centimeters in the selected 2 month period;

Snow depth values are expressed in millimeters whereas snow cover duration is expressed in days. To visualize snow map, select the 2-month period and the year.

mean min q25 q50 (median) q75 q90 max snow cover duration sd Select Period November-December January-Februrary March-April May-June July-August September-October Select Year 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Go To Val Rendena

Snow Depth[mm] Snow Cover Duration [days]

Maps show snow variability with elevation and terrain aspect. Moreover, maps show the variability of snow distribution during the different winters. Interestingly, in recent snowy winters, like 2009 and 2014 (January-February), snow depth mean tends to be lower in the valley floor ( 600 - 800 m above sea level) than in other former snowy winters like in 1991 when snow was more uniformly distributed. This is confirmed by viewing snow cover duration for the same periods.

The maps were realised by aggregating daily maps modelled by GEOtop Hydrological Model and then processed with geotopbricks . Actually illustrated data can be asked writing a message in the Contact us module. Any feedback is well appreciated!

Map of Snow Depth in Val Rendena simulated with the GEOtop Distributed Hydrological Model by Emanuele Cordano is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.