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Data Set ID:
G01186

Western Italian Alps Monthly Snowfall and Snow Cover Duration, Version 1

This data 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.

Geographic Coverage

Parameter(s):
  • Snow/Ice > Snow Cover
  • Snow/Ice > Snow Depth
Spatial Coverage:
  • N: 46.425, S: 44.192, E: 8.436, W: 6.695

Spatial Resolution: Not Specified
Temporal Coverage:
  • 1 January 1877 to 31 December 1996
Temporal Resolution: Not specified
Data Format(s): Not specified
Platform(s) GROUND-BASED OBSERVATIONS
Sensor(s): SNOW MEASURING ROD
Version: V1
Data Contributor(s): Luca Mercalli, Claudio Castellano
Data Citation

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Mercalli, L. and C. Castellano. 1999. Western Italian Alps Monthly Snowfall and Snow Cover Duration, Version 1. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: http://dx.doi.org/10.7265/N5NP22C0. [Date Accessed].

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Detailed Data Description

Parameters

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

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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

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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:

  • Year of data
  • Monthly values
  • Summary of the year
  • Summary for one hydrologic year, October through September

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:

  • Year of data
  • Number of days of snow cover for the month
  • Yearly total of days of snow cover
  • Total days of snow cover for one hydrologic year, October through September

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
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File Size

The entire data set is 203 KB (compressed).

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Contacts and Acknowledgments

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

Acknowledgments: 

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

Document Information

Document Authors

NSIDC Technical Writer

Document Creation Date

Unknown

Document Revision Date

In July 2006, this document was reformatted.

No technical references available for this data set.
No FAQs or How Tos available for this data set.

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