9CaKrnQhzDL作者:china.huanqiu.comgallery内蒙古现罕见“日柱” 持续2小时/e3pmh1nnq/e3pn6eiep1482792780000责编:朱马烈视觉中国148279278000011[]{"gallery":{"members":[{"desc":" 12月26日,内蒙古自治区锡林郭勒盟出现日柱现象,“日柱”现象从晚间19时30分出现,持续至21时30分,当时室外气温为零下20摄氏度,天晴无风,十分利于市民观测。建筑物的照明灯光被反射成一道道色彩斑斓的光柱,把城市夜空点缀得如梦如幻,使人如同置身于“童话小镇”。(图:视觉中国)\r\n\r\n","url":"\/\/himg2.huanqiucdn.cn\/attachment2010\/2016\/1227\/20161227065353960.jpg"},{"desc":" 当冰晶从高层的云落下时,受温湿度、空气阻力等多种因素作用,有时会逐渐变成平板状。这些冰晶在落到地面时,几乎是水平的,阳光或月光被冰晶多重反射后,即产生日柱效应。\r\n\r\n","url":"\/\/himg2.huanqiucdn.cn\/attachment2010\/2016\/1227\/20161227065353677.jpg"},{"desc":" 日柱的出现,对冰晶的形状要求比较高,只有遇到扁平状的冰晶,它才能够在垂直角度上反射出太阳光。\r\n\r\n","url":"\/\/himg2.huanqiucdn.cn\/attachment2010\/2016\/1227\/20161227065353586.jpg"},{"desc":"图为“日柱”景观。\r\n\r\n","url":"\/\/himg2.huanqiucdn.cn\/attachment2010\/2016\/1227\/20161227065353917.jpg"},{"desc":"图为“日柱”景观。\r\n","url":"\/\/himg2.huanqiucdn.cn\/attachment2010\/2016\/1227\/20161227065353119.jpg"}]}}//himg2.huanqiucdn.cn/attachment2010/2016/1227/08/28/20161227082820112.jpg