heating the atmosphere honors earth science. of the sun’s rays that enter our atmosphere, … 20%...
TRANSCRIPT
Of the sun’s rays that enter our atmosphere, …
20% are absorbed (gamma, x-rays, UV)
30% are reflected
50% of the sun’s rays are not used to heat the
earth!
How is the atmosphere heated?
1. The sun heats the ground.
2. The ground heats the atmosphere.
3. The greenhouse effect helps to trap the heat in the atmosphere along with the clouds.
The Greenhouse Effect is…
• the trapping of heat in the troposphere by certain gases in the atmosphere.
• The Greenhouse Effect is a natural process that is vital to the earth!
Greenhouse effect gives +32°C warming and allows for liquid H2O to exist on the planet.
Without the Greenhouse Effect, average earth temperature would be a cool, -17°C!
Water VaporIf a desert and a rain forest are the
same temperature
during the day, would they be the
same temperature at night? Why or
why not?
Water Vapor
• Water vapor traps heat in the atmosphere. The more water vapor in the air, the more heat that is trapped.
So…• The desert is cooler at night than the
rainforest because it has less water vapor in the air.
3. carbon dioxide = animals breathing, factories, burning fossil fuels, forest
fires, erupting volcanoes, etc.
Carbon Dioxide
Carbon dioxide traps heat in the atmosphere. The more carbon dioxide
that is in our atmosphere, the warmer the atmosphere could become.
If the Greenhouse Effect is natural and necessary, what’s the worry?
CO2, CH4, N2O, CFC’s, O3, H2O vapor
Resources• http://www.uk2planets.org.uk/images/gallery/venus_greenhouse%20effect_esa.jpg
• http://www.uwsp.edu/geo/faculty/ritter/animation/atmosphere/greenhouse_effect.gif
• http://www.srh.noaa.gov/lch/prep/heat.jpg
• http://www.geography.hunter.cuny.edu/~tbw/wc.notes/2.heating.earth.surface/images/earth.atm.heat.budget.jpg
• http://nesen.unl.edu/lessons/weather/fig19.GIF
• http://aspire.cosmic-ray.org/labs/atmosphere/greenhouse.jpg
• http://meted.ucar.edu/mesoprim/mpradfog/media/graphics/5cpix1.gif
• http://coastalartsleague.com/2006JuriedCompetition/Images/htm/ACatagory/images/Sun%20Rays,%20Lassen%20Natl.%20Forest,%202005%20-%20Michael%20Rubin.jpg
• http://www.worldofmolecules.com/fuels/methane.gif• http://www.ers.usda.gov/Briefing/GlobalClimate/Gallery/treec2.gif• http://vit.pp.ru/uploads/pics/no_farting.jpg• http://www.hi.is/~mmh/gos/images/photo1.jpg• http://www.koshland-science-museum.org/exhibitgcc/images/causes10b.jpg• http://www.esa.int/images/itesa1_887811_forest_fire_L.jpg