### cloud | aerosol | fog:

Advection fog
* Most advection fog is caused by air
* involves a breeze or moderate wind
  - very moist low level air moving over cold ground
  - common along the pacific coast of the United States

Dense fog
* is most common in the spring when warm air masses ride over melting snowpack.
* plagues the mariner most often in spring and early summer over the open lake waters.
* reduces visibility.

Heavy fog
* are common along the coast in summer
  - rare, and are confined chiefly to the coast
* is visibility below one quarter of a mile.
* occurs mostly during the winter and early spring.

Ice fog
* Most ice fog occurs in cold weather
* fog that forms as ice crystals instead of water droplets.
* is common during the winter

### cloud | aerosol | fog:

Mist
* Most mist creates water.
* Some mist is caused by heat.
* are tiny droplets of liquid suspended in the air
  - liquid droplets usually created by spraying, mixing, or cleaning activities
  - very small droplets of liquids that are inhaled
* can be as high as mountain tops when extreme temperatures are low.
* commonly shroud the hills during the monsoons.
* covers areas
  - mirrors, walls, and ceiling
  - nursery areas
* descend quickly and the temperature can drop dramatically.
* encourages growth.
* is clouds
  - located in waterfalls
* leaves daily to counteract the drying influence of artificial heat.
* loaves with water and turn occasionally while they bake.

### cloud | aerosol | fog | mist:

Thick mist
* are a common occurrence, sometimes even occurring in the winter months.
* is common during the hot humid summers.

Pea soup
* is fog
  - food
  - served at canteens, restaurants, homes and in the army always on Thursdays
  - soup
  - the staple diet of skaters who ride long-distance treks past windmills and dykes
* remains a popular dish in restaurants where tourists enjoy a true taste of old Quebec.

Radiation fog
* Some radiation fog occurs on surfaces.
* can occur in a variety of synoptic conditions.
* is caused by cooling close to the earth's surface
  - common over land in late fall and winter
  - most common in autumn and early winter
  - usually a few meter deep and typically lasts for only a few hours after sunrise

### cloud | aerosol:

Fume
* Many fumes can be deadly to birds, and flying can stir up dust and feathers that are very flammable.
* accumulate in the walls or other surfaces.
* are definitely toxic and including ingestion probably account for most toxic occurances
  - especially hazardous to birds
  - gases
  - harmful to the aluminum antenna parts
  - heavier than air and sink to the floor
  - solid particles of evaporated metal
  - very small recondensed particles, which have a very small particle size
* can also contaminate food stored in refrigerators or freezers
  - be moderately to highly irritating to the lungs
* can cause headaches and dizziness, convulsions and unconsciousness
  - headaches, dizziness and stupor
  - irritation of respiratory tract
  - permanent damage to cornea of eyes
* can damage eyes and lungs
  - lungs, permanently
  - produce asthma-like symptoms
  - strongly irritate the nose, throat and lungs
* cause irritation of eyes and respiratory passages.
* escaping from the gas tank contribute to the formation of ground-level ozone.
* generated during brazing can be a serious hazard.
* is an aerosol
* smell strongly of garlic when heated.

### cloud | aerosol | fume:

Exhaust fume
* can kill all trace of human scent.
* contain deadly carbon monoxide.