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Weather Phenomena. By : Rodrigo Velarde Paloma Castellano Sebastián Velarde Juan Fernando Bazo. Stable. Unstable. Stable. Hoar Frost. Rime. Dew. Fog - Advection. Fog - Radiation. Hoar Frost. Looks like a blanket of ice crystals

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weather phenomena

WeatherPhenomena

By: Rodrigo Velarde

Paloma Castellano

Sebastián Velarde

Juan Fernando Bazo

slide2

Stable

Unstable

stable
Stable

HoarFrost

Rime

Dew

Fog - Advection

Fog -Radiation

hoar frost
HoarFrost
  • Looks like a blanket of ice crystals
  • Moisturedirectly condenses ontoanysurfacebelowfreezingpointtemperature
  • Developsunderclear, calmconditions
slide5
Rime
  • Rime is a frostcausedbysupercooleddropletsin the air
  • Rime freezesontoanythingsolid
  • Coverseverysurface in a film of ice
slide6
Dew
  • Leaveswaterdroplets

coveringsurfaces in the

morning

  • Occursoncoolnightswhen

moisture in the air condenses butitisnotcoldenoughforittofreeze.

fog advection
Fog - Advection
  • Warmed air movesover a coldsurface
  • Air iscooled and condensationresults
  • Sea fogs are alwaysadvectionfog.
fog radiation
Fog - Radiation
  • Cloudsthatformneartheground as result of condensation
  • Coldlandcoolsthe air aboveit, leadingtomoisture in the air condensing
unstable
Unstable

Rainfall - Frontal

Hail

Rainfall - Orographic

Rainfall - Convectional

slide10
Hail
  • Hail is a form of solid precipitation
  • Made of ice and measures between 5 and 200 millimeters in diameter
  • Hailstones generally fall at higher speeds as they grow in size
rainfall orographic
Rainfall - Orographic
  • When warm air is forsed to rise due to a barrier like a mountain or a slope
  • As the air rises it cools until it reaches dew point, when clouds are formed
  • Rainfall occurs on mountain. Areas on the other side of the mountain often have dry climates (Rain shadow effect)
rainfall convectional
Rainfall - Convectional
  • The land heats up the air above it
  • The air rises, it cools, until it reaches dew point temperature. Condensation of moisture creates cloud and rain follows
  • The hotter the day, the more likely there will be convectional rainfall
rainfall frontal or cyclonic
Rainfall – Frontal orCyclonic
  • Occurs when warm and cold air masses meet
  • The less dense warm air risesabove the cold air
  • The rising air cools until dew point, condensation, precipitation
  • Regularly occurs at 60º North and South on the Tri Celular model