Part 7 2/22/2019
Week 16, 17, 18 and 19 The Atmosphere Modules 3, 4, 7 and 8 in AP The study of the Air and the Atmosphere and how we measure them Movement of the Atmosphere - Air Masses, Winds and Storms Weather Prediction Next test: Week 19 T Jan 23/25 - covers the atmosphere and hydrosphere Week 20 A Jan 30 - I will be away - analysis exercise U of IL - Wx Course Lyndon State Course 2/22/2019 2
Prep Questions Week 16 Week 17 Week 18 Week 19 (1) What role does the sun play in causing seasons and the weather? (2) What is the composition of the air? (3) What is the role of each component? Week 17 (1) What are the 5 layers of the atmosphere? (2) What is temperature? (3) What is Ozone hole? Week 18 (1) What factors influence the weather? (2) What are the weather elements? Week 19 (1) What are the factors that cause precipitation? (2) What are the differences and common characteristics of a thunderstorm, tornado, hurricane and a nor'easter low pressure system? 2/22/2019
Current Weather Review http://hss-1.us/phys-sci/Weather-Information.htm Radar/Sat US Radar US Radar NWS Goes Sat Page US Sat IR NRL Sat US Sat Vis NY VIS Sfc Analysis NWS Surface Plots Surface 12 Hour Fcst Surface 24 Hour Fcst Surface 36 Hour Fcst Surface 48 Hr Fcsts Emergency CURRENT SVR Wx RADAR National Weather Situation Page http://www.VueTOO.com Severe Weather Alert Link Your Local Forecast Local Fcsts Rome NY 43.23°N 75.46°W Rome Griffiss Airfield Lat: 43.23 Lon: -75.41 Elev: 504 ft Lat/Lon: 43.23°N 75.46°W Elevation:482 BGM Discussion Wx Maps NAM GFS 1. GFSx -Upper 2.GFSx-MRF- Precip Long Range NWS Model ECMWF CPC Datastreme Climo SYR CLIMO CLIMO STAT CNY ALB CLIMO Other NASA Solar Science Solar-Sun Spot-Space-Wx Sun & Moon Rise & Set Tables Moon Phases Your Sky Start Charts Tides Maine NOAA Space Wx Forecast Central 2/22/2019
Wind circulation around synoptic scale (large scale) high and low pressure systems The net result is that around synoptic scale pressure systems the CF cause the wind to circulate around the pressure systems and do not blow directly from the center of the high to the center of the low pressure as you initially might think. Thus the winds blow basically parallel to isobars with Clockwise circulation around a High Pressure system Counterclockwise circulation around a Low Pressure system. Surface friction modifies this relationship a little bit so the winds tend cross isobars form high to low at an angle of 10-20 degrees form parallel. This is important because friction helps to cause low level convergence and upward motion at the center of lows and low level divergence and downward motion at the center of highs. To be sure there are other factors that are more important in causing upward or downward motion than friction, but it is an important factor. 2/22/2019
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Buys Ballot's law" In the Northern Hemisphere, if you stand with your back to the wind, low pressure will be to your left. Near the surface the frictional effect deflects the wind 10-20 degrees into low pressure side. Must modify Buys Ballot's law near surface to account for this. Just rotate 10-20 degrees to the right of the wind at your back. 2/22/2019
Large Scale Storms 2/22/2019 8
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