Vocabulary Troposphere stratosphere Climate Ozone Mesosphere Thermosphere Meteorology Greenhouse effect Ionosphere Greenhouse gasses Temperature inversion Weather Climate Ozone Insulation Wind chill Humidity Dew point fog Cloud Dew frost

What is Weather. Weather Meteorology Is the State of the atmosphere at a given Time and Place. Includes types of clouds Rain, snow etc. – Precipitation Storms even dust storms Measure of temps pressure, wind speed, direction and amount of moisture in the air. Study of the entire atmosphere. Including the weather.

Venus Also the study of how the atmosphere heats and cools How clouds form and produce rain What makes the wind blow. Past and Present climates. Composition of the atmosphere and Atmosphere of other planets.

Tools of meteorology Most useful Clouds Many , instruments have been developed. i.e.. Thermometer Lab experiments. Mathematical models of the atmosphere and use of computers and satellites. Simple direct observation. Tells a lot. Cloudy-rainy cool: Clear-warmer and dry. Even humidity and pressure can be observed. Certain clouds come with weather and others foretell rain. What professions would benefit from weather forecasting???

People who look at the weather. Farmers/Sailors and others dependent on weather become skilled at forecasting the weather. Mackerel scales and mares tails make lofty ships carry low sails. A cloud formation predicts the coming of a storm. Red skies in the morning sailors take warning: red skies at night sailors delight.

Weather Models and Scales Beaufort Scale Help Scientist accuratly predict the weather. Relates the wind speed to its effects on land and sea. Pg478 blk text.

Wind Chill Scale Frostbite The use of this chart can help convert the actual temperature outside to the temp the body would feel if exposed to the air and wind. Pg 479. This adjusted temperature indicates the potential danger of frostbite in the outside air. Frostbite is, literally, frozen body tissue - usually skin but sometimes deeper - and must be handled carefully to prevent permanent tissue damage or loss. Here is an example of frost bit.

There are four degrees of frostbite. This is and example of fourth degree frost bite where only amputation of the affected area will save the patient.

Beaufort scale self cast Assignment Purpose : Learn to use a Meteorological scale to help forecast the weather. Obtain the Beaufort scale handout. Cut out scrambled scale parts and re- arrange them in your comp book. In Addition : Honors only.. Create a scale of your own using numbers, descriptions and pictures for a weather topic. You can cut out pics . Title it at the top in your comp book The Abbott scale of _________.

Composition of atmosphere Gasses Air and Water. Mixture. Oxygen, Nitrogen make up 99%of dry air volume. 1% argon carbon dioxide. Others … He, H, neon, ozone and krypton. This air thins out quickly as you increase altitude. Air always contains some water vapor. Humidity.

Ozone Importance Result?? Cause Is a form of oxygen gas. A molecule of ozone contains three oxygen atoms. A molecule of oxygen contains only two oxygen atoms. Ozone forms when ultraviolet light rays from the sun act on the oxygen in the upper most part of the atmosphere about 10 to 50 km up. It absorbs 99% of the harmful ultraviolet rays. If the atmosphere has less ozone, more ultraviolet rays reach Earth’s surface, causing more sunburns, skin cancer and plant damage. Chlorofluorocarbons or (cfc) Combo of chlorine, fluorine, and carbon. Used in coolants and foam products CFCs break down ozone.

Ozone Ozone measurements since 1970 show a hole in this protective layer of gas centered over Antarctica. It has been growing ever since.

Structure of the Earths Atmosphere. Troposphere Diagram pg #523 Study this diagram closely. Notice where temperatures pause before either rising or falling. Temperature cools with elevation all earths clouds and either occurs here. 0-18 km

Temp cools with elevation. Air molecules become ionized. 50-80km Stratosphere Mesosphere Thermosphere Temp rises with elevation. Contains ozone layer. Little or no weather here. 18-50km Temp cools with elevation. Air molecules become ionized. 50-80km Temp rises with elevation meteors and northern lights happen here. 80-500km Special layer of the atmosphere occurs from 65-500km up. http://205.138.55.154/a/abbott/

Ionosphere Northern lights. Ions are formed when uv light from the sun knock electrons off of oxygen atoms. These layers reflect radio waves back to earth Each layer can reflect a different frequency. Affected by solar events. Are caused by solar events . The eruptions of solar energy interact with Earth’s magnetic fields at the poles. Together with the air particles thy form auroras.

Northern Lights.

Green House Effect Earth surface radiates inferred heat waves. These waves are reflected back by water vapor and carbon dioxide in the atmosphere. In a green house the glass roof acts like the carbon dioxide and water vapor in the air. It lets the light in to heat up the soil but does not let the inferred waves out. Gasses that thicken the atmosphere. Water vapor C02 Methane Green house effect. Green house gasses.

E. Importance of the Atmosphere Stable environment Protection- sun & meteoroids Warmth- water can exist as a liquid

“The Atmosphere” Video Questions What does the atmosphere block? Describe Bill’s “atmosphere cylinder” experiment, & what were his findings? How do pilot’s determine their current altitude? Describe the difference of air pressure between Death valley & on top of a mountain. Why the difference? Why do your ear’s pop in a plane? Order the five layers of the atmosphere from highest to lowest. Why is it warmer in low cities than in the high mountains? How are Earth’s atmosphere and a greenhouse similar? Bill must run around the track _______ times to simulate the height of the troposphere. Name three topics of the atmosphere that were described in the “weather rap.”