乳白天空”是极地的一种天气现象，也是南极洲的自然奇观之一。它是由极地的低温与冷空气相互作用而形成的。当阳光射到镜面似的冰层上时，会立即反射到低空的云层，而低空云层中无数细小的雪粒又像千万个小镜子将光线散射开来，再反射到地面的冰层上。如此来回反射的结果，便产生一种令人眼花缭乱的乳白色光线，形成白蒙蒙雾漫漫的乳白天空。这时，天地之间浑然一片，人和车辆、飞机仿佛融入浓稠的乳白色牛奶里，一切景物都看见，方向难以判别。人的视线会产生错觉，分不清近景和远景，也分不清景物的大小。严重时还能使人头昏目眩，甚至失去知觉而丧命。
乳白色天空是极地探险家、科学家和极地飞行器的一个大敌。若遇到它，那是很危险的，正在滑雪的滑雪者会突然摔倒，正在行驶的车辆会突然翻车肇祸，正在飞行的飞机会失去控制而坠机殒命。这样的惨痛事件，在南极探险史和考察史上是屡见不鲜的。1958年，在埃尔斯沃恩基地，一名直升飞机驾驶员就因遇到这种可怕的坏天气，顿时失去控制而坠机身亡。1971年，一名驾驶LC-130大力神飞机的美国人，在距离特雷阿德利埃200公里的地方，遇到了乳白天空，突然失去联系，一直下落不明。
乳白天空虽然对人类在南极的活动构成危险，但只要事先进行有针对性的训练，有安全防范措施，也是可以避免的。一旦遇到它随即绕道躲开；正在野外活动的人和车辆则应呆在原地不动，注意保暖，耐心等待乳白天空的消失，或救援人员前来营救。
南极天空暴风雪
南极的白色风景
The whiteout” is the polar one kind of weather phenomena, is also one of antarctica natural marvelous sights. It is forms by the polar low temperature and the cold air interaction. Resembles when the Dangyang photoemission in the ice layer which to the mirror surface, will reflect immediately to the low altitude cloud layer, but in the low altitude cloud layer the innumerable tiny snow grain will look like thousands of small mirrors the scattering of light, will reflect again to the ground ice layer. So back and forth reflects the result, then produces one kind of dazzling cream color optical fiber, forms the misty white fog endless whiteout. By now, between the world quite the same as a piece, the human and the vehicles, the airplane integrated in as if the thick cream color milk, all sceneries saw, the direction distinguished with difficulty. Human's line of sight will have the illusion, will not be able to distinguish clearly the close view and the prospect, also will not be able to distinguish clearly the scenery size. Serious when can also cause the human dizzy dizzy, even passed out to lose their life.
The cream color sky is the polar explorer, the scientist and a polar flight vehicle's archenemy. If meets it, that is very dangerous, is skiing the slider will throw down suddenly, will be going the vehicles will overturn a vehicle suddenly cause an accident, will be flying the airplane can lose the control to plane crash perishes. Such deeply grieved event, explores Shi He in South Pole to inspect in the history is common. because in 1958, in the Else Wearn Base, a helicopter pilot on met this kind of fearful bad weather, lost the control to plane crash immediately dies. in 1971, drove the LC-130 Titan missile airplane's American, was being away from the special thunder Ardleigh Egypt 200 kilometers places, has met the whiteout, lost the relation suddenly, has been unaccounted. whiteout, although to humanity in South Pole's activity present hazards, so long as but carries on the target-oriented training beforehand, has the safety precaution measure, is also avoidable. Once meets it to detour to shunt immediately; Outdoor sports' person and the vehicles should stay are freezing, the attention maintains warmth, patience waiting whiteout's vanishing, or the rescue groups come to rescue.
