斯德哥爾摩上空的“幻日”
    A parhelion, or sundog, combined with a halo, is seen over the Lake Malaren in central Stockholm, Sweden on November 30. These weather phenomena are created by ice crystals in the atmosphere during cold weather。
    11月30日，瑞典斯德哥爾摩梅拉倫湖上空出現(xiàn)帶有光圈的幻日現(xiàn)象。據(jù)了解，幻日現(xiàn)象乃大氣層中的冰晶在寒冷天氣中(反射、折射以及衍射光線)而成。