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.本数据集涵盖意大利阿尔卑斯山西部18个观测站点的积雪观测资料，包含两类核心数据：月度降雪量与月度积雪持续天数。各观测站的记录周期各不相同，其中记录时长最长的站点数据覆盖1877年至1996年，单观测站的平均记录时长约为61年。现有观测站的海拔范围为565米至2720米。本数据为雪桩测量结果的汇总统计值：积雪总深度的每日观测通常于当地时间早8时开展，观测数据通过测雪杆获取。降雪量被定义为相较前一日观测读数的增量；受积雪压实沉降影响，该测量值可能存在最高10%至20%的低估，但该低估效应在所有测量中均保持相对一致。随后将每日数据汇总得到月度统计值。