Introduction to the Atmosphere

Introduction to the Atmosphere - Introduction to the...

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Introduction to the Atmosphere (Lecture 2) The “Spheres” Hydrosphere o Water part of our planet o Water has greatest heat capacity Lithosphere o Land part of the planet the crust of the Earth Biosphere o Living part of the planet Atmosphere o A mixture of many different gases o The composition of the atmosphere is NOT constant as it changes from place to place and time to time Composition of Atmosphere Permanent gases (98% by volume) o Nitrogen 78.08% o Oxygen 20.95% o Argon .93% o Neon .001% Variable gases (2% by volume) o Greenhouse gases o Allows energy to pass through and then holds the heat o Water vapor (H2O) Most important and most variable of the variable gases Will find it near zero by volume in colder areas, high elevation, and desert (doesn’t have any moisture) because water cannot Will find it in 4% (its highest) near coasts where temps are warmer, low latitudes closer to sea level o Methane (CH4) o Ozone (O3) Not a stable compound
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Introduction to the Atmosphere - Introduction to the...

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