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Unformatted text preview: s are called Earths __________________. Why? m Earth like a blanket by trapping heat energy inside Layers of the Atmosphere Note on greenhouse gases and cooling aerosols The gases of the atmosphere are MOSTLY nitrogen and oxygen, then argon, ____________ gases and inert gases. Greenhouse gases (GGs): GREENHOUSE EFFECT ____________ of Earth Carbon dioxide 1. Water vapor 2. Methane 3. Ozone 4. Nitrous oxide 1. Short-wavelength radiation from the sun passes through the atmosphere and warms Earths surface 2. Earths surface radiates longer infrared radiation away back into the atmosphere 3. Greenhouse gases _________and _________ the infrared radiation thereby trapping energy/heat GGs keep energy in Earth system Atmospheric warming by greenhouse effect is a ___________ phenomenon that has allowed ________ to exist on Earth It is the ___________ ___________ of GGs in the atmosphere that causes concern INCREASED warming effects global temperature and climate Most of the concern is with increasing levels of ___________ _____________ AEROSOL EFFECT ___________ of Earth 1. Some particulate matter, especially __________-containing aerosols scatter Suns rays, cooling Earth 2. This partially offsets greenhouse warming effect making it harder to observe. Example of cooling: volcanic eruption of Mount Pinatubo, Philippines in 1991 Sulfate aerosol particles remained in atmosphere for a few years What happened to global temperature? It dropped for about 3 years since 1991. That event was powerful enough to cool global temperature, though short-term....
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- Fall '09