PPT-Air Masses and Fronts

Whats the difference Air Mass An air mass is a large volume of air with the same temperature and moisture content As an air mass forms it takes on the characteristics of the area over which it develops. 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? . Great Flood of 1937. 70% of Louisville was submerged. 3.3 billion in damages. Crest - 85.4 ft. (Flood Stage – 55 ft.). 15 inches of rain in 12 days. Chapter 1: Monitoring the Weather (Basics). One of the Deepest Extratropical Cyclones Ever Recorded. 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. . Front: a boundary between 2 air masses. Warm air and cold air do not mix well.. Changes in weather occur along fronts.. 4 Types of fronts:. Cold Front. Warm front. Stationary front. Occluded front. 1. Cold Front. the. Weather. Sun = Energy driving weather. Equator = warm; Poles = cold .  . why. ?. Daytime: air over land warmer than over water; reverse at night. .  . why. ?. Convection currents . An . air mass. is a . huge body of air. that has similar characteristics as the area they were formed.. Air Masses . classified by…. MOISTURE. TEMPERATURE. COLD. HOT. WET. DRY. Air Masses are named based on where they FORMED…. 1. An air mass is a wide-spread section of the troposphere with uniform . temperature . and . humidity . (moisture). 2. The source region is the geographic location the air mass developed over. . If air settles over one location for a long time, it develops the characteristic temperature and moisture of the area.. Connecting the Weather. Air Masses. Fronts. Jet Stream. Quiz. Midweek Seminars. Meteorology – Jet Streams Fronts and Air Masses. Air Masses. A mass . of air takes on Temperature and Moisture from where the . is the study of atmospheric phenomena.. The Causes of Weather. Weather and Climate. Weather. is the current state of the atmosphere, including short-term variations that affect our lives.. The Causes of Weather. . Movements of Air Masses and Fronts are vital to our . understanding. and . prediction. of Weather Systems. . Weather Forecasting. requires that we understand. :. Cyclones (. L. =Lows) and Anticyclones (. 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. . & . 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:. Air masses. A body of air with similar characteristics throughout. Humidity. . and . temperature. are the two main characteristics used to classify air masses.. The “first name” of an air mass describes the humidity of the air mass.. air masses.. . An . Air Mass. is an immense body of air, some 1600+ km (~1000mi) across and 1-3 km (~.6 to 1.9mi) thick, with relatively homogeneous physical properties (density, T. . and moisture) at a given altitude..