GEO 110 Lecture Notes - Lecture 6: Cyclogenesis, Squall, Stratus Cloud
5 Mar 2018
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Geo110 week 5 atm moisture and weather. Hydrologic cycle: water covers over 70% of planet, substance that easily changes state, cycles through, evaporation/transpiration (out of plants through respiratory processes) Interception (water gets caught up in the leaves: water hits the leaves and perfectly flows down the stem and trunk and into the ground. Infiltration: water soaking into the soil, condensation. Humidity: amount of water vapour in the air, max quantity held in air depends on air temp. Specific humidity actual quantity of water held by a parcel of air: grams of water vapour per kg of air, highest in equatorial zones, lowest near the poles. Dew-point temp temp at which air will reach saturation when cooled without changing pressure; condensation begins once reached. Frost-point saturation occurs below the freezing point. Saturation vapour pressure: max water vapour possible, solely temp dependant, exponentially increases with temp. Achieving saturation: add water vapour, mix cold and warm air, cool air to the dew point.
