PPT-Air Pressure and Wind

What is air pressure Air Pressure the force exerted by the weight of the air above it Why does the weight of the air not crush you The pressure is exerted in all directions not just down Ruler and newspaper demonstration. Three real forces . (gravity, pressure gradient, and friction) push the air around. Two apparent forces . due to rotation (Coriolis and centrifugal). Large-scale flow is dominated by gravity/pressure and Coriolis … . Coriolis. Effect. Air pressure differences cause the movement of air. Air moving parallel to the ground is called . wind. Air moving up or down is called a . current. Air generally moves from the poles to the equator, . 003: Lab 4. Chapter 4: 14ab, 15c. Chapter 5: 4abc, 10ab, 18. Chapter 6: 2ab, 7ab, 9acd. Chapter 7: 9ab. 4.14a,b. pg. 163. Isohyets: . . isopleths of rainfall. a). -same guidelines as all isopleths. Chapter 2.2 Guided Notes. What is Weather?. Weather is the condition of Earth’s atmosphere at a particular time and place.. What is Wind. ?. Wind is air moving across the surface of the Earth. It can move horizontally or parallel to the ground.. • . moving air. • horizontal movement of air from an area of high pressure to an area of low pressure. •winds can be . local or global. What is wind?. Matt Vaughan. ATM 619. Motivation. Moisture is an important factor in cyclogenesis. Moisture is a necessary ingredient in extreme precipitation events. Neiman and Shapiro (1993). Motivation. Latent heating modifies the pressure field around cyclones, affecting the track and intensity of the surface cyclone. Chapter 2.2 Guided Notes. What is Weather?. Weather is the condition of Earth’s atmosphere at a particular time and place.. What is Wind. ?. Wind is air moving across the surface of the Earth. It can move horizontally or parallel to the ground.. Three real forces . (gravity, pressure gradient, and friction) push the air around. Two apparent forces . due to rotation (Coriolis and centrifugal). Large-scale flow is dominated by gravity/pressure and Coriolis … . 19.1 Understanding Air Pressure. Don’t notice change in your day to day activities. Mostly cause-and-effect relationship. Air pressure causes wind. Wind brings change in temperature/humidity/precipitation. What is the ultimate energy source for most wind?. Do Now. What is the ultimate energy source for most wind. ?. The Sun. Do Now. Coriolis Effect. Humidity. Isobar. Friction. Key Words. Air Pressure. Barometer. Will air circulate Clockwise or Counterclockwise around each of these pressure centers?. H. L. Cyclonic and anticyclonic winds in the Northern Hemisphere. Cyclones and anticyclones . Cyclone. A center of . WIND LOAD ON ANTENNA STRUCTURES PREPARED BY: JANAK GAJJAR SD1909 Introduction Wind calculation Pressure distribution on Antenna Conclusion References Introduction Wind forces undoubtedly play a significant role in the design and operations of large steerable antennas, and the need for satisfactory estimates of these forces is becoming increasingly evident. Inertial . Oscillations. :. A fluid parcel is initially at . (. x. o. ,y. o. ) . and “pushed” with a velocity . u. o. . = . u. (. x. ,t. =0) = (. u. o. , . v. o. ).. It is then allowed to move freely on a rotating earth.. Sea and Land Breezes (Thermal Wind). Coriolis Force. Geostrophic Wind. Centrifugal Force & Friction. Gradient Wind. Surface vs Aloft Winds. Mountain Breezes. Katabatic Winds. Force: a quick lesson.