Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aae541 |
Basal ice formation in snow cover in Northern Finland between 1948 and 2016 | |
Rasmus, Sirpa1,2; Kivinen, Sonja3; Irannezhad, Masoud4,5 | |
2018-11-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland; Peoples R China |
英文摘要 | Basal ice formation in the terrestrial snow cover is a common phenomenon in northern circumpolar areas, onehaving significant impacts on ecosystems, vegetation, animals and human activities. There is limited knowledge on the spatial and temporal occurrence of basal ice formation because of the sparse observation network and challenges involved in detecting formation events. We present a unique dataset on the annual extent of ice formation events in northern Finland between 1948 and 2016 based on reindeer herders' descriptions of the cold season in their management reports. In extreme years, basal ice can form over wide geographical extents. In approximately half of the herding districts studied, it occurred more frequently in the period 1983-2016 than in the period 1948-1982. Furthermore, five out of seven of the most extensive basal ice formation events (90th percentile) occurred between 1991 and 2016. Themost commonly reported processes related to ice formation were thaw or rain-on-snow events followed by freezing of the snow cover. Years with extensive basal ice formation were often characterized by above-average October-December air temperatures, air temperature variations around 0 degrees C and relatively high precipitation. However, basal ice did not occur during all warm and wet early winters, and formation events were generally weakly linked to the large-scale atmospheric teleconnections. Another risk factor for reindeer grazing associated with warm and rainy earlywinters is the growth of mycotoxin-producing molds below the snow. Approximately 24% of all reported mold formation events co-occurred with basal ice formation. The prevalence and frequency of basal ice formation events can be assessed based on our results. Ourwork contributes to understanding long-term fluctuations and changes in snow and ice conditions and the impacts of this variability in circumpolar areas. |
英文关键词 | basal ice climate change Northern Fennoscandia practitioners' knowledge semi-domesticated reindeer (Rangifer tarandus tarandus) snow cover warm winter events |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000449184500004 |
WOS关键词 | WINTER WARMING EVENTS ; CLIMATE-CHANGE ; REGIME SHIFTS ; TRENDS ; REINDEER ; VARIABILITY ; IMPACTS ; MODEL ; PRECIPITATION ; CRYOSPHERE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26062 |
专题 | 气候变化 |
作者单位 | 1.Univ Lapland, Arctic Ctr, POB 122, FI-96101 Rovaniemi, Finland; 2.Univ Jyvaskyla, Dept Biol & Environm Sci, POB 35, FI-40014 Jyvaskyla, Finland; 3.Univ Eastern Finland, Dept Geog & Hist Studies, POB 111, FI-80101 Joensuu, Finland; 4.Southern Univ Sci & Technol SUSTech, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China; 5.Univ Oulu, Water Resources & Environm Engn Res Grp, POB 4300, FI-90014 Oulu, Finland |
推荐引用方式 GB/T 7714 | Rasmus, Sirpa,Kivinen, Sonja,Irannezhad, Masoud. Basal ice formation in snow cover in Northern Finland between 1948 and 2016[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(11). |
APA | Rasmus, Sirpa,Kivinen, Sonja,&Irannezhad, Masoud.(2018).Basal ice formation in snow cover in Northern Finland between 1948 and 2016.ENVIRONMENTAL RESEARCH LETTERS,13(11). |
MLA | Rasmus, Sirpa,et al."Basal ice formation in snow cover in Northern Finland between 1948 and 2016".ENVIRONMENTAL RESEARCH LETTERS 13.11(2018). |
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