Poster_rete_nivometeo_ISSW2013 [modalità compatibilità]

The snow and weather observation network of
the Valle d’Aosta Region (NW Italian Alps)
G.Burelli1, P.Dellavedova1, B.Frigo1, V.Segor 2
1 Fondazione Montagna Sicura, Villa Cameron, Località Villard de la Palud 1,
11013 Courmayeur (AO), Italy - [email protected]
2 Ufficio neve e valanghe, Assetto idrogeologico dei bacini montani, Regione Autonoma Valle d’Aosta, Loc. Amérique 33,
11020 Quart (AO), Italy – [email protected]
Introduction
• Mountain guide’s surveys:
Data on weather and snowpack conditions are fundamental element to
issue the Snow and Avalanche Bulletin as essential for the assessment
and prediction of avalanche danger. Obviously the Avalanche Warning
Services mainly base their analysis and forecast on a series of data
provided by snow and weather automatic station, snow study plots
and snowpack stability tests.
4 surveys per week, provided by 21 mountain guides
Giovanna Burelli
Snow and weather observation network:
Due to the complex morphology and the high spatial variability of
its climatic conditions, the Valle d’Aosta Region owns a wide
snow and weather observation network to forecast the avalanche
danger, which is composed of:
• Snow and weather automated stations:
81 snow and weather automated stations, placed at different
altitudes and managed by the regional “Centro Funzionale”
and by the Regional Agency for Environmental Protection
(ARPA)
Each survey provides snowpack profiles
(MOD 4 AINEVA), snowpack stability
tests (RB and ECT tests), snow cover
and avalanche activity observations
(MOD 6 AINEVA) and a complete report
Local scale weekly data are also
provided by 17 Local Avalanche
Committees
• Manual snow and weather observation network:
36 daily data (MOD 1 AINEVA)
25 weekly snowpack profiles in fixed, flat study plots
(MOD 4 AINEVA)
25 weekly snow cover
and avalanche activity
observations
(MOD 6 AINEVA)
Conclusions
The network is active
every year from
November to May. Data
are collected by the
Avalanche Warning
Service of Aosta,
The whole snow and
regional snow observers,
weather network
mountain guides, ski
patrollers, dams operators (CVA), forest rangers (CFV),
customs officer (SAGF), alpine huts staff, heliski guides, etc. .
Total data collected from November 2012 to May 2013: 4837
MOD 1 AINEVA, 549 MOD 4 AINEVA, 393 MOD 6 AINEVA,
99 mountain guides’ surveys, for the issue of 73 Snow and
Avalanche Bulletins.