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Long-lying snow patches in Scotland have been noted from at least the 18th century,〔Ken Crocket, ''Ben Nevis – Scotland’s highest mountain'', ISBN 0-907521-16-9〕 with snow patches on Ben Nevis being observed well into summer and autumn. Indeed, the summit observatory, which operated from 1883 to 1904, reported that snow survived on the north-east cliffs through more years than it vanished.〔Martin Moran, ''Scotland’s Winter Mountains'', ISBN 0-7153-0794-0〕 More recently, additional and methodical field study on the subject has been carried out by others, most notably by ecologist Dr Adam Watson. Most of this work concentrated on the mountains of north-east Scotland (in particular, the Cairngorms), but more recent observations by him and others has shed light on various locations throughout Scotland where long-lying snow persists. The available information systematically gathered by observers over the last 50 years or so, and greatly increased since the 1990s, has built up a level of knowledge that points to Scotland’s snow patches being now amongst the best documented in the world. == General locations == There are many locations on the Scottish mountains where snow lies regularly into July, August and even September, but the two main areas where snow virtually always lies longer than anywhere else are the Cairngorms and the Lochaber mountains. These areas contain all of Scotland's mountains in excess of , including Ben Nevis. In some years snow can persist all summer, in some locations lasting through to the next winter. In 2015 some 73 patches were still present in late November at a time when the next winter's snows had started accumulating. The last time so many patches had survived all year was 1994. Other locations where snow has been known to survive: * 1. Creag Meagaidh hills, survived in 1994 * 2. Glen Affric/Strathfarrar hills, usually melts mid/late August but survivals noted on Sgurr na Lapaich and Toll Creagach (J Pottie and others) * 3. Ben Wyvis, normally melts July/August, though survival has been noted (A Watson) * 4. Grey Corries, normally survives until July/August, has survived at least once on Stob Coire Easain (A Watson) * 5. Glen Coe, late July is not unusual for final melt date, but survival of old snow until first, but not lasting, new snows in November has been noted 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Snow patches in Scotland」の詳細全文を読む スポンサード リンク
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