Term | Definition Absolute humidity, specific humidity, and mixing ratio | |
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Term | Definition mass of WV in air X volume of air | |
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Term | Definition Mass of WV in air/total mass of air | |
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Term | Definition mass of WV in air/mass of dry air | |
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Term | Definition (specific humidity/saturation specific humidity) X 100 | |
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Term | Definition amount of water vapor present in relation to its saturation point | |
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Term relative humidity can be affected by either: | | Definition 1) change in temperature 2) change in amount of WV | |
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Term In the morning, relative humidity is ____. Temperature is lower, so saturation humidity is ____. | | Definition |
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Term | Definition temperature to which air must be cooled to reach saturation | |
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Term | Definition difference between water vapor capacity and actual water vapor content (if equal, saturation occurs) | |
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Term | Definition hair hygrometer, sling psychrometer | |
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Term | Definition max amount of water vapor that can exist in the atmosphere that can exist at a certain temperature | |
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Term when evaporation=condensation, ____ occurs | | Definition |
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Term Is the saturation curve linear? | | Definition |
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Term different ways to acheive saturation | | Definition add water vapor to the air, mix cold and warm air, or lower the temperature to dew point | |
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Term adding water vapor to the air | | Definition showers; water vapor added by rainfall causes fog under clouds | |
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Term adding warm air to cool air | | Definition jet plane conetrails, temperature balances, but as curve is exponential, more water vapor is present than can be held. fog forms | |
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Term high droplet curvature means | | Definition less resistant to evaporation (less surface area), | |
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Term low droplet curvature means | | Definition high surface tension, more resistant to evaporation | |
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Term | Definition |
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Term the more curved the droplet... | | Definition the higher the supersaturation required to keep it from evaporating away (decreases rapidly with increasing droplet size) | |
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Term | Definition when droplets form by chance collisions and WV molecules bond under supersaturated conditions | |
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Term | Definition water-attracting particulates that assist in droplet formation at relative humidities far below that of homogenous nucleation | |
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Term | Definition when hygroscopic aerosols assist in roplet formation at relative humidities far below that of homogenous nucleation | |
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Term | Definition hygroscopic aerosol particles onto which the droplets form in heterogeneous nucleation | |
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Term the effect of solution and size is _____ to that of curvature | | Definition |
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Term | Definition results in cloud droplets with lower saturation points than pure water | |
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Term droplets formed by soluble condensation are _____ likely to evaporate than those formed by_____. this effect promotes_______. | | Definition less, homogenous nucleation, condensation | |
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Term a large insoluble condensation nuclei is (more/less) likely to condense than a small drop of pure water. Why? | | Definition more, it is covered in a film of water | |
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Term in nature, condensation nuclei consists of a mix of ____ and _____particles. | | Definition |
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Term the combined effects of solution and size are _____ to that of droplet curvature | | Definition |
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Term at relative humidities near or below 100%..... | | Definition condensation naturally occurs | |
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Term | Definition extremely small droplets created by some condensation nuclei capable of attrating water below 90% RH | |
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Term two ways to lower air temperature | | Definition diabatic and adiabatic processes | |
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Term two ways to lower air temperature | | Definition diabatic and adiabatic processes | |
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Term 1st law of thermodynamics (purpose) | | Definition describes what happens when heat is added or removed from a gas | |
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Term 1st law of thermodynamics (formula) | | Definition change in heat=(pressure X change in volume)+(specific heat of air X change in temperature) | |
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Term | Definition energy is added or removed from a system | |
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Term air that passes over a (warm/cool) surface (gains/loses) heat | | Definition warm and gains, cool and loses | |
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Term | Definition temerature changes but but no heat added/lost | |
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Term how can a temperature be changed w.o a loss or gain of feet | | Definition warm air cools, cool air expans | |
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Term | Definition upward displacement of air that leads to adiabatic cooling, sometimes clouds | |
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Term | Definition cold front pushes into warm air, lifting it. if reversed the warm air still rises | |
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Term | Definition low pressure ell, winds converge on center and push up | |
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Term | Definition |
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Term | Definition air's susceptibility to uplift | |
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Term unstable air_____, while stable air_____ after lifting mechanism ends | | Definition continues to rise, sinks back | |
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Term | Definition parcel never becomes warmer than environment, cools faster | |
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Term | Definition air parcel is never cooler than environment, cools slowly | |
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Term | Definition parcel is unsaturated and stable, | |
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