LINKS CHAPTER A WEATHER ANALYSIS AND FORECASTING Books [~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~] Class Meetings Course 1. The National Weather Service issues 24-hour weather Description forecasts that are correct about _______ percent of the Course Schedule time. Grading 10 Learning 15 Objectives 50 Photographs 85 Practice Questions 2. Greenwich Mean Time (GMT) is the time at longitude. Special Notice 0 degrees Student 45 degrees Responsibilities 90 degrees 100 degrees Access to Online Daily Weather 3. Modernization of NWS facilities during the 1990s Summary and involves Learning replacement of manual observation systmes with automated Activities systems phase out of conventional radar and installation of National Weather Doppler radar. Service - Green installation of AWIPS Bay All of the above are correct Home 4. A radiosonde transmits to a ground station vertical profiles of air temperature air pressure humidity All of these are correct 5. Upper-air (radiosonde) soundings are made ________ during a 24-hour day. hourly once twice three times 6. Air pressure readings are reduced to sea-level in order to remove the influence of ________. temperature water vapor concentration radiation station elevation 7. on a surface weather map, fronts occupy troughs ridges 8. The altitude of a pressure surface (the 500-mb surface, for example) is directly proportional to the ______ below the surface. air temperature air density ozone concentration humidity 9. The altitude of the 500-mb surface _______ toward the poles. does not change slopes upward slopes downward 10. The drop in air pressure with altitude is more rapid in _____ air than in ______ air. cold...warm warm...cold 11. Which one of the following cannot be determined from a 500-mb weather map? wind direction at 500-mb wind speed at 500-mb location of a arctic high temperature and air mass advection at 500-mb 12. On a 500-mb weather map, a ridge is ______ and a trough is _______. warm-core...cold-core cold-core...warm-cold 13. At 500-mb, cold air advection into ridges and warm air advection into troughs favor a _________ circulation pattern. meidional zonal split-flow persistent 14. Forecasting the track of a hurricane is based on records of tracks of similar hurricanes in the past numerical models of the atmosphere the experience of the forecaster A combination of all of the above 15. The decline in forecast skill as the forecast period lengthens is due to missing or inaccurate weather observations failure of weather stations to detect subsynoptic-scale weather systems imprecise numerical models All of the above are correct Score = Correct answers: [~ ~ ~ ~ ~ ~ Back to Top ~ ~ ~ ~ ~ ~] Web Site created by David Dimmer Last Updated on December 11, 1998