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>The natural melting snow performance of GANGI with the steep roof in the wet and heavy snowfall zone : At Niigata Pref. Nagaoka City Tochio Haramachi December 2012 / March 2013
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The natural melting snow performance of GANGI with the steep roof in the wet and heavy snowfall zone : At Niigata Pref. Nagaoka City Tochio Haramachi December 2012 / March 2013
In the winter season of 2012 and 2013, the cold day continued, the maximum snow depth reached 205 cm and the snow weight of the ground became 615 kg/m2. In spite of these surroundings, looking at the steep roof of 40 degrees to south which is covered with black asphalt roofing with sand, the maximum snow load stopped to 72 kg/m2 and the snow melted 25 day earlier completely. The followings are this cause. ① the average amount of evaporation was up to 4 kg/(m2･day) between the 25th January and the 6th March. ② Solar radiation in the winter season is usually less, but the average global solar radiation during the period reached 77 W/(m2･daytime). ③ The average daily amount of snow melting of the steep roof in the snow period reached 5.2 kg/(m2･day).
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机译：在2012年和2013年冬季，持续的寒冷天气，最大积雪深度达到205厘米，地面积雪重量达到615 kg / m2。尽管有这些环境，但向南倾斜40度的陡峭屋顶（上面铺满了黑色的黑色沥青屋顶）覆盖着沙子，最大积雪量停止在72千克/平方米，并且25天前融雪完全融化了。以下是此原因。 ①1月25日至3月6日，平均蒸发量达4 kg /（m2·day）。 ②冬季的太阳辐射通常较少，但此期间全球平均太阳辐射达到77 W /（m2·day）。 ③积雪期间，陡峭屋顶的平均日融雪量为5.2 kg /（m2·day）。
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