weather and climate 1

weather and climate 1 - Weather/Climate Lecture Notes 18:23...

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Unformatted text preview: Weather/Climate Lecture Notes 18:23 Westward- wind toward west Westerly- wind from west Infrared-no cloud seen=low cloud-not associated with big rain Geostationary satellites Stationary w respect to fixed point on earths surface- resolves at same rate as earth Far from earth (~36000 km) source spatial resolution, but good temporal sampling Visible image viewed from space In fared image- best Space is bright white=cold Polar orbiting satellites Orbit earth from pole to pole Closer to earth ~900 km= better spatial resolution, poorer temporal sampling Surface-station model (A&K, appendix A) Difference btwn weather and climate Weather: state or condition of what is happening now Climate: conditions of atmosphere accumulated over long period of time Atmosphere Fluid Thin layer surrounding earth Mainly mixture of invisible gas with some solid and liquid particles, that stays in place due to force of gravity 90% of atmosphere is in bottom 16 km lecture 9/9/11 (what is atmosphere made of?) started with big bang stars formed (~13 billion yrs ago) universe composed of hydrogen and helium earths original atmosphere: helium hydrogen CH4 methane NH3 ammonia Where's O2, N2, CO2, H2O, O3? H and He are so light that they escaped pull of earths gravity Outgassing of water vapor H2O, CO2, and N2 o Escape through cracks Earths 2 nd atmosphere: CH4, NH3, N2 nitrogen (doesnt interact w/ other gasses), CO2, Ar, H2O, Ne, Kr Earth cooled over time and H2O vapor began to form clouds and it began to rain form lakes oceans and rivers CO2 gradually was soaked up by these reservoirs and atmosphere became rich in N2 2-3 billion years ago, primitive plants evolved in oceans plants produced food by photosynthesis sunlight+2CO2+3H2O 2O2+C2(H2O)3 so life itself is responsible for adding oxygen to atmosphere mix then other chemical ozone (O3) was produced ozone regulated by 2 reactions filtering UV rays=good first reaction uses UV rays to split ozone so ozone protects us from these deadly UV rays life responds to oxygen and ozone life colonizes dry land (ozone protects it) oxygen breathing animals can be big! (dinosaurs) Lecture 9/12/11 (basic principles) force can be thought of as a weight or a push weight=mass of object x acceleration energy: ability of object to do work kinetic energy is energy of motion temp: measure of average kinetic energy of molecules that make up substance faster molecules=higher temp pressure=force/area...
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This note was uploaded on 04/09/2012 for the course AOS 100 taught by Professor Martin during the Fall '08 term at Wisconsin.

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weather and climate 1 - Weather/Climate Lecture Notes 18:23...

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