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Western Italian Alps Monthly Snowfall and Snow Cover Duration

Summary

This dta set consists of snow observations for 18 stations in the western Italian Alps. Two types of data are included: monthly snowfall amounts and monthly snow cover duration in days. The period of record varies with each station, with the longest station record including data from 1877 to 1996. The average station record duration is approximately 61 years. Available stations range from 565 meters to 2720 meters in elevation. The data are summaries of snow stake measurements. Daily observations of total snow depth were generally made at 8 a.m. local time. Data were aquired using a snow measuring rod. Snowfall amount was defined as being any increase over the previous day's reading. This measurement may be an underestimate of as much as 10-20% due to snow pack settlement. However, this underestimation is fairly consistent for all measurements. The daily data were then totaled to yield the monthly values.

Access to the Western Italian Alps Monthly Snowfall and Snow Cover Duration data set is unrestricted, but users are encouraged to register for the data. Registered users will receive e-mail notification about any product changes.

Citing These Data

Mercalli, L., and C. Castellano. 1999. Western Italian Alps monthly snowfall and snow cover duration. Boulder, CO: National Snow and Ice Data Center. http://dx.doi.org/10.7265/N5NP22C0

We kindly request that you cite the use of this data set in a publication using the following citation example. For more information, see our Use and Copyright Web page.

Overview Table

Category Description
Data format ASCII
Spatial coverage Western Italian Alps
Temporal coverage 1877-1996
File size The entire data set is 203 KB (compressed).
Parameter(s) Monthly snowfall amounts and monthly snow cover duration in days
Metadata access View metadata
Data access Data are available via FTP.

Table of Contents

1. Contacts
2. Detailed Data Description
3. Data Access and Related Collections
4. Acknowledgements
5. Document Information

1. Contacts

Investigators

Dr. Luca Mercalli and Dr. Claudio Castellano
Societe Meteorologica Subalpina
V. G. Re 86
I-10143
Turino, Italy
meteo@arpnet.it

Technical Contact

NSIDC User Services
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder, CO 80309-0449  USA
phone: +1 303.492.6199
fax: +1 303.492.2468
form: Contact NSIDC User Services
e-mail: nsidc@nsidc.org

2. Detailed Data Description

Parameters

Monthly snowfall amounts (total, in cm) and monthly snow cover duration in days

Spatial and Temporal Coverage and Resolution

Station Name
Elevation (in meters ASL)
Latitude (degrees North)
Longitude (degrees East)
Period of Record
Lago Toggia
2200
46.425
8.436
1932-1996
Lago Alpe Cavalli
1502
46.092
8.120
1931-1996
Lago Goillet
2526
45.925
7.670
1947-1996
Lago Gabiet
2340
45.842
7.853
1928-1996
Lago Cignana
2160
45.875
7.603
1927-1996
Gressoney D'Ejola
1850
45.858
7.793
1928-1996
Rimasco
891
45.858
8.070
1925-1996
Ceresole Reale
1579
45.425
7.253
1926-1996
Lago Valsoera
2440
45.492
7.403
1959-1996
Lago Serru'
2260
45.458
7.128
1955-1996
Balme
1432
45.308
7.211
1929-1996
Lago della Rossa
2720
45.275
7.153
1938-1996
Lago Moncenisio
2000
45.225
6.962
1931-1996
Lago Rochemolles
1926
45.125
6.762
1925-1996
Bardonecchia
1340
45.075
6.695
1925-1996
Lago Castello
1660
44.608
7.053
1943-1996
Cuneo
565
44.392
7.550
1877-1996
Lago Chiotas
2010
44.192
7.317
1979-1996

Format

Data are stored in fixed length comma delimited fields in an ASCII file. Each data field is a four digit integer. All missing data are flagged as 9999.

Both the snowfall and the snow cover duration data files include a header combining station name, elevation, latitude, and longitude.

Monthly snowfall amount fields:

Sample monthly snowfall record for file sbalme.dat:

	Balme, 1432, 45.308, 7.211
	1929,  82,   8,  23,  46,   4,   0,   0,   0,   0,   0,   9,  70, 242,9999  

The first record is the header. Descriptions of the second record entries are as follows:

Entry
Description
1929 year of the data
82 snowfall (in centimeters) in January
8 snowfall (in centimeters) in February
23 snowfall (in centimeters) in March
46 snowfall (in centimeters) in April
4 snowfall (in centimeters) in May
0 snowfall (in centimeters) in June
0 snowfall (in centimeters) in July
0 snowfall (in centimeters) in August
0 snowfall (in centimeters) in September
0 snowfall (in centimeters) in October
9 snowfall (in centimeters) in November
70 snowfall (in centimeters) in December
242 total amount of snowfall (in centimeters) in 1929
9999 missing flag for the total for the hydrologic year 1929 which runs from October 1928 through September 1929

Monthly snow cover duration fields included:

Sample monthly snowfall record for file dbalme.dat.

	Balme, 1432, 45.308, 7.211
	1929,  31,  28,  17,   9,   1,   0,   0,   0,   0,   0,  17,  31, 134,9999 

The first record is the header. Descriptions of the second record entries are as follows:

Entry
Description
1929 year of the data
31 days of snow cover in January
28 days of snow cover in February
17 days of snow cover in March
9 days of snow cover in April
1 days of snow cover in May
0 days of snow cover in June
0 days of snow cover in July
0 days of snow cover in August
0 days of snow cover in September
0 days of snow cover in October
17 days of snow cover in November
31 days of snow cover in December
134 total number of days of snow cover in 1929
9999 missing flag for total number of days in the hydrologic year 1929, which runs from October 1928 - September 1929

File Size

The entire data set is 203 KB (compressed).

3. Data Access and Related Collections

Data are available via FTP. NSIDC has many snow data sets that can be found by searching the data catalog.

4. Acknowledgements

This data set is maintained at NSIDC with support from the NOAA National Geophysical Data Center.

5. Document Information

Document Authors

Unknown

Document Creation Date

Unknown

Document Revision Date

In July 2006, this document was reformatted.

Document URL

http://nsidc.org/data/docs/noaa/g01186_west_ital_alps_snow_fall/index.html