Similarities between fog and haze are visibility obstruction.But the reasons for the formation of fog and haze and conditions but there\'s a big difference.Fog is floating in the air of a large number of small water droplets or ice crystals, forming conditions requires a higher water vapor saturated.Appeared fog air humidity, air relative humidity is 100%, or closer to 100%.Appear when the fog effective horizontal visibility to le than 1 km.When effective 1-10 km horizontal visibility as mist.Fog has with the daily variation of air humidity and appear sooner or later, the more common or add thick, relatively reduce and disappear phenomenon during the day.A haze when air is relatively dry, air relative humidity under 80% usually.Its formation is due to a large number of tiny particles of dust, smoke, salt crystals evenly suspended in the air, make effective horizontal visibility to le than 10 km air mixed corrosion phenomenon, symbols for \"up\".The diurnal variation of the haze is not obvious in general.When air maes without big changes, the air ma is stable, continue to appear for a long time, sometimes sustainable more than 10 days.Because the haze and mist, dust, flying sand, dust, smoke, such as a weather phenomenon, floating in the air for all the large number of very small dust particles and smoke that effective horizontal visibility to le than 10 km.Sometimes makes meteorological profeionals are difficult to distinguish.Must be combined with the weather background, air condition, air humidity, color, smell and other factors, such as satellite monitoring to comprehensive analysis and judgment, to correct conclusions, and fog and haze weather phenomenon can transform each other sometimes.
雾和霾相同之处都是视程障碍物。但雾与霾的形成原因和条件却有很大的差别。雾是浮游在空中的大量微小水滴或冰晶，形成条件要具备较高的水汽饱和因素。出现雾时空气潮湿，空气相对湿度常达100%或接近100%。出现雾时有效水平能见度小于1KM。当有效水平能见度1－10KM时称为轻雾。雾有随着空气湿度的日变化而出现早晚较常见或加浓，白天相对减轻甚至消失的现象。出现霾时空气则相对干燥，空气相对湿度通常在80%以下。其形成原因是由于大量极细微的尘粒、烟粒、盐粒等均匀地浮游在空中，使有效水平能见度小于10KM的空气混蚀的现象，符号为“∞”。霾的日变化一般不明显。当气团没有大的变化，空气团较稳定时，持续出现时间较长，有时可持续10天以上。
由于阴霾、轻雾、沙尘暴、扬沙、浮尘、烟雾等天气现象，都是因浮游在空中大量极微细的尘粒或烟粒等影响致使有效水平能见度小于10KM。有时使气象专业人员都难于区分。必须结合天气背景、天空状况、空气湿度、颜色气味及卫星监测等因素来综合分析判断，才能得出正确结论，而且雾和霾的天气现象有时可以相互转换的。
Measures to prevent
Go out wearing a mask
If go out can be put on the mask, so that we can effectively prevent dust particles into the body.Best mask with cotton masks, because some people allergic to non-woven fabrics, and cotton masks, it is generally not allergic, and easy to clean.Go out back, should immediately to clean face and bare skin.Fog haze weather le open the window
Many people used to open a window ventilated.But if haze all day do not come loose, it is the closed or open a window ventilated doors and Windows? Li zhi refers to The fog haze weather, fog, haze weather not advocating a window ventilated, reopen window is ventilated, such as the sun came out best.Light diet drink more water
Fog diet should choice light digestible and foods rich in vitamins, drink water more, eat fresh vegetable and fruit more, such not only can supplement various vitamin and inorganic salt, still can rise to embellish lung in addition to dry, the action of expectorant cough, spleen and kidney.Eat excitant food le, eat more pears, loquat, clear lung phlegm food such as orange, orange.④A moderate amount of vitamin D supplements
Mist, le sunshine, the more this season because of a shortage of ultraviolet irradiation, inadequate vitamin D production in the human body, some people will produce the phenomenon such as mental lazine, depreed, added some vitamin D when neceary.
⑤Produce free radicals in the body
We know that smoking is harmful to health, because smoking can lead to increase the number of free radicals inside the body.Free radicals can attack the cells of the body organs, causing various diseases.Fog and haze after entering the human body can produce much more radical than smoking.Is the most direct performance of respiratory system diseases, even serious may induce heart disease, cancer and death.[18]
So when we encounter haze weather, in addition to physical isolation measures, but also completes the fog haze weather clear produce free radicals in the body, such ability can from inside to outside to protect our health.
The only effective against free radicals method is to add antioxidants [19], because antioxidant can effectively remove free radicals.Usually we eat some fruits and vegetables contain antioxidants, but very little content, and can\'t meet our body antioxidant needs every day, especially in the polluted city.These cases has attracted the attention of a great world preventive medicine, the development and production in some European and American developed countries some antioxidant value very high product, can be effective against the worsening environmental pollution to the harm of human body.
⑥Make personal hygiene
Fog appears to be moderate, it contains all kinds of acid, alkali, salts, amine and phenol, dust, harmful material such as pathogenic microorganism, therefore fog out should return immediately wash face and bare skin.⑦A variety of green plants
In his balcony, terrace, a variety of indoor green plant.Singapore indoor green wall, from the balcony, windowsill to underground warehouse, plant has been kind to the 9 floor from the ground floor.But in Beijing, a lot of high-grade office buildings are not green.If each plant one square metre, Beijing can be increased by 20 million square meters of green plant.In the proce of
interview, whether Wang Xianmin office doorway or indoor, reporters saw many plants.From his experience, other, evergreen, tiger and other green leafy plants, because of its bigger blades, adsorption capacity is relatively strong
防范措施
外出戴口罩
如果外出可以戴上口罩，这样可以有效防止粉尘颗粒进入体内。口罩以棉质口罩最好，因为一些人对无纺布过敏，而棉质口罩一般人都不过敏，而且易清洗。外出归来，应立即清洗面部及裸露的肌肤。
雾霾天气少开窗
很多人习惯开窗通风。可如果雾霾一整天不散，是该开窗通风还是紧闭门窗呢？李智指
雾霾天气
出，雾霾天气里，不主张早晚开窗通风，最好等太阳出来再开窗通风。 饮食清淡多喝水
雾天的饮食宜选择清淡易消化且富含维生素的食物，多饮水，多吃新鲜蔬菜和水果，这样不仅可补充各种维生素和无机盐，还能起到润肺除燥、祛痰止咳、健脾补肾的作用。少吃刺激性食物，多吃些梨、枇杷、橙子、橘子等清肺化痰食品。 适量补充维生素D
这个季节雾多、日照少，由于紫外线照射不足，人体内维生素D生成不足，有些人还会产生精神懒散、情绪低落等现象，必要时可补充一些维生素D。 体内产生自由基
我们知道吸烟有害身体健康，是因为吸烟会导致增加身体内自由基的数量急剧上升。自由基会攻击身体器官的细胞，从而引起各种疾病。而雾霾进入人体后会产生的自由基要远比吸烟多很多。最直接的表现就是呼吸系统的疾病，甚至严重的可能诱发心脏病、致癌、致死。[18]
所以当我们遭遇雾霾天气的时候，除了要做好物理措施的隔离，还要做好雾霾天气在体内产生的自由基的清理，这样才能够从里到外的全面保护我们的身体健康。
对抗自由基的唯一有效方法是补充抗氧化剂[19]，因为抗氧化剂可以有效清除自由基。平时我们吃的蔬菜水果就含有一些抗氧化成分，但是含量很少，并不能满足我们身体每天的抗氧化所需，特别是在污染严重的城市。这些情况引起了世界预防医学界的重视，在一些欧美发达国家研制生产出来一些抗氧化值非常高的产品，可以有效对抗日益恶化的环境污染对人体的危害。
做好个人卫生
雾气看似温和，里面却含有各种酸、碱、盐、胺、酚、尘埃、病原微生物等有害物质，因此雾天外出归来应立即清洗面部及裸露的肌肤。
多种绿植
在自家阳台、露台、室内多种绿植。
