PPT-Fronts

Warm Air Front Warm Air Front Warm air replaces cold air w arm air masshigher temperaturelesser density Rainfall increases as the front approaches Characteristics Weather phenomenon Prior to the Passing of the Front. Air streams tend to contain relatively narrow ranges of potential temperature and wet bulb potential temperature w peculiar R isentropic analyses for synoptic scale weather systems tend to show well defined air streams which are identified by nam rarefactions and contact discontinuities Contact discontinuities are surfaces that separate zones of different density and tem perature By definition such a surface is in pressure equilibrium and no gas flows across it When as often happens the tang and fronts. Review of last lecture. Tropical cyclone structure: 3 major components, rotation direction of inflow and outflow, location of maximum wind and rainfall, 3 feedbacks. Tropical cyclone destruction: 4 reasons? Which side has the most intense destruction? . AOS 101 Weather and Climate. Lisha. M. . Roubert. University of Wisconsin-Madison. Department of Atmospheric & Oceanic Sciences. Fronts: The Boundaries between Air Masses. A front is defined as the transition zone between two air masses of different density. . 8. th. Grade. Definition. Weather front – The area where two air masses meet and do not mix.. Front and Weather. Different types of fronts produce different patterns of weather. . There are four types of weather fronts:. Lab. Fronts!. Fronts!. What are fronts?. A narrow transition zone, or boundary, between differing synoptic scale air masses whose primary discontinuity is density. Fronts highlight . baroclinic. zones, where temperature advection and atmospheric energy is at work. Evaluation: See worksheet. A - Cold Front B = Warm Front B1. Cool air mas - warm air mass moves in. A2. Warm air mass - cool air mass moves in. B3. Bri Warm Fronts. : occurs when a warm air mass slides over a cold air mass. Relatively . stable. Moves slower than . a . cold . front. Long transition from cold air to warm air (warm air moves slowly). Temperature gradually rises. Forecasting Weather. Now that Meteorologists understand the factors that affect weather they must put all of this together to create . weather maps. and to determine . weather patterns. .. Together weather maps and weather patterns are very helpful in . Predicting the Weather. Importance. Weather changes. Storm / tornado warnings. Everyday necessity. Tools to Predict. Thermometer. Barometer. Anemometer. Rain gauge. Weather vane. Hygrometer. Thermometer . We will go over how to upload your file into canvas together.. Wanted Poster Requirements. You are making two posters.. The name and a picture of the Pressure Systems.. The way they circulate . (clockwise or counterclockwise). . A large body of air having nearly uniform conditions of temperature and humidity at any given altitude.. Warm air. forms over . tropical. regions near the equator. . . T- Tropical. . Cold air. . © U.S. Coast Guard . Auxiliary Association. No attempts to add, modify or delete information contained within this document shall be made. If errors are discovered, please contact the U.S. Coast Guard Auxiliary’s National Training . & . the weather they bring. Have you ever wondered why we get certain kinds of weather…cloudy days with lots of rain…sudden storms, then cooler weather…?. All weather happens because of the 4 types of fronts & how they interact:.