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| composed of ice crystals, white and whispy, indicate fair weather |
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| ususally cover small portion of the sky, small ripples resemble fish scales, mackeral sky, |
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| thin sheet like clouds that cover the whole sky and form a halo around the sun |
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| composed of water droplets; only one km thick; gray puffy masses; often in parallel bands; |
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| gray or blue ice crystals that have watery sun |
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| dark gray wet looking and continuously falling rain or snow, light or moderately steady precip |
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| low lumpy clouds that appear in rows, patches, or rounded masses |
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| uniform grayish clouds covers whole sky kind of like fog that doesnt touch ground |
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| puffy cottonball like clouds |
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| aka thunderheads, bring hail and lightning and thunder |
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| these particles serve as surfaces on which water vapor may condense |
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| fog that forms as moist air flows upward along an elevated surface |
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| artic sea smoke and steam devils are a form of this type of fog |
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| a tiny liquid drop of dew that freezes when the air temp. drops below freezing |
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| fog that most often forms as warm rain falls into a cold layer of surface air |
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| when fog burns off it does this |
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| the most common type of fog along the pacific coast of north america |
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| beads of water that have condensed onto objects near the ground |
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| fog that most commonly forms on clear nights, with light or calm winds; formed by earths radiational cooling, surface cools quickly and air reaches RH=100%; longer nights, more fog can develop, common in late fall/ winter in valleys where cold wet air collects AKA NEBRASKA FOG; wintertime fog that often occurs in the central valley of california |
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| light shower of snow that falls intermittently from cumuliform clouds for a short duration |
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| particles in the atm on which ice crystals may grow |
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| another name for the ice crystal process of rain formation |
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| injecting a cloud with small particles with the intent to enhance precip |
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| intermittent heavy downpour of either rain or snow |
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| most common snowflake shape |
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| aggregate of ice crystals |
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| high winds, low temps and blowing or falling of snow |
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| ragged looking clouds that drift rapidly with the wind often beneath a nimbrosrtatus cloud |
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| fog most likely to form on a clear calm autumn morning; mixing 2 unsaturated masses of air moist air mizes with cold air aka steam fog |
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| gray in the infrared picture symbolizes |
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| least likely to produce precipitation that reaches the ground |
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| lumpy ice particles, aka snow pellets, that form in a cloud usually bythe process of accretion |
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Definition
| the freezing of supercooled droplets by contact iwth a nucleus |
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| cirrus clouds above altostratus clouds |
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Definition
| most suitable for natural cloud seeding |
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Term
| collission coalescence and ice crystal |
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Definition
| two processes that form precip |
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Definition
| water molecules thatare under freezing but not frozen |
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| ice crystal process;; starts as snow |
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Definition
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| ratio from ice crystal or water drop needed for precip |
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Definition
| what was used to seed clouds and what is used today |
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| alg causes ice crystals from when it comes into concact with supercooled lidquid and ice crystals frow in size as water vapor deposits onto AGL crystals |
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Definition
| how does cloud seeding work |
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Definition
| water droplets under .5mm |
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| evaporating precip that does not reach ground |
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| water droplets above .5mm |
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| falling snowflake melts in warmer air and then freezes in subfreezing surface area |
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| fog/small rain drops freeze when striking object that is below freezing |
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| pieces of ice ranging in size from small pea to gold balls or larger |
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| standard, tipping bucket, weighing type |
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| use doppler shift to detect speed of rain falling horizontally towards or away from radar can see inside t storms for tornadoes |
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| how does doppler radar work |
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| cloud resting near the ground |
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| lens shaped; formed my moist air; crossing mountains |
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| cap cloud, form above a cumulonimbus cloud or cumulus congestus cloud b/c most winds are defected to top of cloud |
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| called cow udders, form on underside of cumulonimbus clouds or form in sinking air |
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| condensation trails from aircraft |
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| polluted air with condensation nuclei and is a health danger |
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Term
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Definition
| formed by earths radiational cooling, surface cools quickly and air reaches RH=100%; longer nights, more fog can develop, common in late fall/ winter in valleys where cold wet air collects AKA NEBRASKA FOG |
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Term
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Definition
| warm moist air moves over a cool surface and air cools below dew point to produce fog, need wind and common in san fran |
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| warm moist air moves inland from gulf air passes over cooler areas and air cools below dew point and spreads over a large region and common in central US |
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| moist air that cools as it moves up mountain slopes/ihlls east side of mountains in winter and spring; fog that forms as moist air flows upward along an elevated surface |
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| mixing 2 unsaturated masses of air moist air mizes with cold air aka steam fog |
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| formed when warm air rides up and over cold surface this is why we get foggy days after a big snow followed by warm temps |
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