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首页> 外文期刊>Forest Research Papers >Frequency and thickness of snow cover at the foot of the Babia Góra Massif in the winter seasons 1960/61 to 2014/15
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Frequency and thickness of snow cover at the foot of the Babia Góra Massif in the winter seasons 1960/61 to 2014/15

机译：1960/61至2014/15冬季BabiaGóraMassif脚下积雪的频率和厚度

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摘要

The aim of the study was to gain knowledge about changes in the nival conditions prevailing in the lower part of the Babia Góra massif in the winter, during the period from 1960/61 to 2014/15. The performed analyses concerned the daily snow cover thickness in the winter seasons of the years 1960/61–2014/15, and were based on data recorded by a meteorological station established by the Institute of Meteorology and Water Management – National Research Institute (IMGW-PIB) in Zawoja (697 m altitude). The study was focused on the period from the first to the last day of the appearance of the snow cover in the season. Based on long-term measurements carried out in in Zawoja, it was found that the average length of the occurrence of snow cover with the thickness of ≥ 1 cm was 104 days, which showed variability in individual seasons that ranged from 47 days in 2013/14 to 145 days in 1993/94. It was noted that the period of snow cover occurrence was shortened – from 118 days in the decade 1960/61–1969/70 to 96 days in the recent decade (2000/01–2009/10). The potential duration of snow cover was on average 157 days. The snowiest months were February and January, when snow cover occurred for 81% and 75% of all the observation days, respectively. The largest thickness of snow cover was recorded during these two months, with the maximum of 178 cm (January 30, 1976). In contrast, snow cover was not observed in July, August and September. The studied multi-year period was characterised by high variability of the winter snowiness index: from 1.61 in 2013/14 to 8.00 in 1962/63. In the period 1960/61–2014/15, in Zawoja, there was observed the distinct periodicity (16–19 years) with regard to the number of days with snow cover, the average and total snow cover and the winter snowiness.
机译：这项研究的目的是了解1960/61至2014/15冬季冬季BabiaGóra断层下部普遍存在的雪化条件的变化。进行的分析涉及1960 / 61-2014 / 15年冬季的每日积雪厚度，并基于由国家研究所气象与水管理研究所（IMGW-）建立的气象站记录的数据PIB）位于Zawoja（海拔697 m）。该研究的重点是从该季节积雪出现的第一天到最后一天。根据在Zawoja进行的长期测量，发现厚度≥1 cm的积雪的平均长度为104天，这表明各个季节的变异性从2013年的47天不等。 1993/94年为14至145天。值得注意的是，积雪的时间缩短了，从1960 / 61–1969 / 70十年的118天缩短到最近十年（2000 / 01–2009 / 10）的96天。潜在的积雪持续时间平均为157天。最下雪的月份是二月和一月，当时分别有81％和75％的天被积雪覆盖。这两个月记录到最大的积雪厚度，最大为178厘米（1976年1月30日）。相反，在7月，8月和9月没有观察到积雪。所研究的多年期的特点是冬季下雪指数变化很大：从2013/14的1.61到1962/63的8.00。在Zawoja的1960 / 61–2014 / 15期间，在有积雪天数，平均积雪和总积雪以及冬季下雪天方面，观察到了明显的周期性（16-19年）。

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