PPT-Fronts and Air Masses

An air mass is a large pool of air having similar temperature and moisture characteristics An air mass occupies thousands of square miles of the Earths surface Air masses are created . 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? . Dr. . Hooda. . What is an air mass?. 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. . 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. . 10/2/12. Weather changes as air masses move.. ____________- large volume of air where temperature and humidity are the _________ at different altitudes.. Air masses can cover thousands of square miles. 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…. 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 . 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.. The Causes of Weather. Objectives:. Compare and contrast weather and climate. Analyze how imbalances in the heating of the Earth’s surface create weather. Describe how and where air masses form. Meteorology is the study of atmospheric phenomena, from the ancient Greek meteor “high in the air”. . ATMO 1300. Summer II . 2017. Air Mass. A large body of air in which there are similar horizontal temperature and moisture properties.. . Properties largely acquired from underlying surface. Air masses can cover thousands of miles. & . 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.. Weather Maps. Storms. Weather Maps. Weather Stations. Show the following data. in a concise way:. . - cloud cover. . - wind direction. . - wind speed. . - temperature. . - precipitation. . 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..