PPT-Wind Circulations, Fronts, &

MidLatitude Cyclones Geostrophic Winds Geostrophic Wind Wind flowing in a straight path parallel to the isobars at a constant speed Above the influence of friction the Boundary Layer a given parcel will accelerate toward the lower pressure due to the PGF. 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. . de-patterning) circulations, such patterning should also enhance the food web. Fronts and intensify vertical laterally convergent gences. These produce alternating upwelling flow. eddy denotes an area 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. . “Whirlwind Theory”. Rotation. Coriolis. Espy. Convergence into Low. PGF. 1841. Loomis. Rotation AND Convergence. 1860. Early Maritime Observations (Winds). http://m.nautil.us/issue/25/water/the-dueling-weathermen-of-the-1800s. Mid-Latitude Cyclones. Geostrophic Winds. Geostrophic Wind. Wind flowing in a straight path, parallel to the isobars at a constant speed.. Above the influence of friction (the Boundary Layer) a given parcel will accelerate toward the lower pressure due to the PGF.. Warm Air Front. Warm Air Front. Warm air replaces cold air. w. arm air mass=higher temperature=lesser density. Rainfall increases as the . front approaches. Characteristics. Weather phenomenon. Prior to the Passing of the Front. Andrew C. Winters. ATM 619. 28 January 2016. 250 . hPa. Wind Speed. 1200 UTC 22 Jan 2016. UW-Madison AOS. Modified from . Defant. and . Taba. (1957). STJ. POLJ. Tropical Tropopause. Subtropical Tropopause. 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). . 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.. © 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:. 3. Its structure, composition and dynamics. In last week’s lecture, we focussed on how weather is generated.. The key ingredients are energy and gradients.. Last Week’s Lecture. Incoming energy from the Sun is balanced with outgoing radiative cooling of the Earth, resulting in an equilibrium temperature of about 15 °C. . 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..