The Greenhouse Effect Carbon dioxide is a greenhouse

The Greenhouse Effect

Carbon dioxide is a greenhouse gas that traps heat in the atmosphere. Without it and other greenhouse gases (like water vapor, Earth would be a frozen world, like Mars. Image from: www. anthonares. net/ ogle_planet. jpg

Our Solar System Image from: http: //www. astro. lsa. umich. edu/sas/scales_universe/solar_system. jpg

Greenhouse Effect on Other Planets Venus Thick Atmosphere: 96% CO 2, Sulfuric Acid Average Temperature: 850 o F Mars Thin Atmosphere: 95% CO 2, also Argon, etc. Average Temperature: -64 o F Earth Atmosphere: 79% N 2, 20% O 2, 1% Other gases Average Temperature: 56 o F

Earth’s Atmosphere UV Light All weather takes place in the Troposphere Image from: www. wyckoffschools. org/. . . / images/atmosphere. gi

Depletion of the Ozone Layer Ozone hole over Antarctica, September 2006. The blue and purple colors are where there is the least ozone. Ozone depletion is human caused – due to the release of Chlorine and Bromine gases into the Stratosphere. Image from: http: //www. nasa. gov/vision/earth/lookingatearth/ozone_record. html

Spectrum of the sun compared with that of the earth Slide from: Scott Denning, 2007 Atmospheric Science Class

Image from: http: //www. noirextreme. com

Shortwave radiation comes through the atmosphere Earth warms and radiates longwave radiation All weather takes place in the Troposphere

Shortwave radiation comes through the atmosphere t n e v e g n i r r u c ! c p o u y l l d a e r s s u t e a m n e A v a h e w t tha Earth warms and radiates longwave radiation All weather takes place in the Troposphere

The average atmospheric temperature varies year by year, but overall, there has been a noticeable increase since 1920. From book: Essentials of Geology, S. Marshak, p. 533

Carbon is always on the move From book: Essentials of Geology, S. Marshak, p. 520

Eruption of Mount Cleveland, Alaska adds Carbon Dioxide to the air. Image from: www. nasa. gov/. . . / image_feature_756_prt. htm

Plants use Carbon Dioxide and sunlight to grow. The byproduct of Photosynthesis is Oxygen and sugars that make the plant grow. Image from: grapevine. net. au/. . . / science/photosynthesis. html

When plant material burns, it releases Carbon Dioxide in the Atmosphere. Image from: www. wpclipart. com/weather/ scenes/forest_fire. png

Image from Energy Information Administration

There is 30 percent more Carbon today than there was 150 years ago

Carbon in the atmosphere joins with Oxygen to form CO 2 Carbon atom Oxygen atoms

Present-day Greenhouse Gas Sources 56. 6% Carbon Dioxide, fossil fuels (oil, coal) 7. 9% Nitrous Oxide 17. 3% Carbon Dioxide, decay of plant material 14. 3% Methane, natural gas, agriculture, etc. Image from IPCC

Carbon is always on the move From book: Essentials of Geology, S. Marshak, p. 520

Shortwave radiation comes through the atmosphere Additional Greenhouse gases Earth warms and radiates longwave radiation, heat is trapped All weather takes place in the Troposphere

The average atmospheric temperature varies year by year, but overall, there has been a noticeable increase since 1920. From book: Essentials of Geology, S. Marshak, p. 533