My Research By: Ms. Williams June 29, 2004. Warm-Up Activity.
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Transcript of My Research By: Ms. Williams June 29, 2004. Warm-Up Activity.
AerosolAerosol
1 : a suspension of fine solid or liquid particles in gas <smoke, fog, and mist are aerosols>
CloudCloud
1 : a visible mass of particles of condensed vapor (as water or ice) suspended in the atmosphere of a planet (as the earth) or moon
ClimateClimate
2 a : the average course or condition of the weather at a place usually over a period of years as exhibited by temperature, wind velocity, and precipitation
Aerosol-Cloud-Climate Aerosol-Cloud-Climate InteractionsInteractions
Aerosol Cloud Climate
Direct Effect
IndirectEffect
The sun emits short-wave radiation towards to earth
The Earth re-emits long-wave radiation back towards space
Fun Fact
Without Earth's atmosphere, temperatures would climb to over 2000°F (93°C) during the day and fall to 280°F (138°C) below zero at
night.
Why does it feel cooler Why does it feel cooler on a cloudy day?on a cloudy day?
Sunny Day @ the Beach
Cloudy Day @ the Beach
Cloud FormationCloud Formation
Clouds form in Clouds form in regions of the regions of the atmosphere atmosphere where water where water vapor is vapor is supersaturated.supersaturated.
However, the However, the water vapor must water vapor must condense on condense on aerosol particles aerosol particles to form clouds to form clouds Aerosols that
become a cloud drop
Cloud
Aerosol Cloud
Why do clouds not form Why do clouds not form everywhere water vapor everywhere water vapor exists?exists?
Cloud Regions Water Vapor Regions
11stst Indirect Effect Indirect EffectAerosol Cloud
More polluted:Smaller drops
Less polluted:Larger drops
Fun Fact:
The droplets of water or ice in a cloud are
about 70 times smaller than the period at the end of this sentence.
Why is the crushed ice Why is the crushed ice brighter than the cubed brighter than the cubed ice?ice?
How does this affect us?How does this affect us?
Climate is a Climate is a delicate systemdelicate system
Predict future Predict future climate trendsclimate trends
Predict Predict consequences consequences of current of current actionsactions
“The Day After
Tomorrow”
Other Aerosol ImpactsOther Aerosol Impacts
Acid RainAcid Rain Anthropogenic Anthropogenic
(man-made) (man-made) aerosolsaerosols
Vegetation DamageVegetation Damage Ecological systemEcological system
HealthHealth Respiratory EffectsRespiratory Effects
VisibilityVisibility Smog, Fog, Haze, Smog, Fog, Haze,
etc…etc…
RecapRecap
AerosolClimate
Direct Effect:Direct Effect:-Aerosols absorb -Aerosols absorb and scatter Sun’s and scatter Sun’s RadiationRadiation
Aerosol Cloud
Indirect Effects:Indirect Effects:-Clouds need aerosols to -Clouds need aerosols to formform
Cloud Climate
Clouds Reflect Clouds Reflect Sunlight From SpaceSunlight From SpaceClouds reflect more Clouds reflect more and live longer as the and live longer as the number of aerosols number of aerosols increaseincrease