仪表等级飞行员理论培训stage3-215B GRAPHIC WX.ppt

METEOROLOGY Graphic Weather Products WEATHER CHARTS SURFACE ANALYSIS WEATHER DEPICTION RADAR SUMMARY COMPOSITE MOISTURE STABILITY CONSTANT PRESSURE ANALYSIS WINDS / TEMPERATURES ALOFT SIGNIFICANT WEATHER PROGNOSTIC SEVERE WX OUTLOOK SURFACE ANALYSIS CHART SURFACE ANALYSIS CHART Observation! Indicates pressure systems and fronts Overview of winds and temperatures Visual representation of a METAR Station model circle (human) square (automated) Why should we care about front locations? Cold Front: Strong lifting force (chance for convective WX) Wind shift: NW to SW Temperature change -Pressure change across front (get new altimeter setting) Warm Front: Weak lifting force (chance for stratiform IFR) Wind shift: SW to E Temperature change -Pressure change across front (get new altimeter setting) Why should we care about pressure system locations? High Pressure: Descending air Generally clear (possible low-level haze) Warmer Few clouds, maybe cirrus Low Pressure: Rising air Poor visibility due to rain/cloud Possible convective activity Surface Analysis-compare to Wx Depiction Same Area on Weather Depiction WX DEPICTION CHART Weather Depiction Chart “BIRD’S EYE VIEW OF THE WX” Overview of favorable and adverse weather conditions Graphic IFR, VFR, marginal VFR Derived from METARs Every 3 hours Station circle “]” means automated RADAR SUMMARY CHART Radar Summary Shows observed areas of precipitation Echoes Contours with levels of intensity Heights of tops in MSL Lines and cells of thunderstorms Cannot determine all areas where clouds may exist Keep in mind information may be an hour old and therefore ineffective at circumnavigating thunderstorms Use LIVE radar info as a supplement FAA fig 8 Radar Summary Chart Satellite Weather Pictures With composite radar image, full cloud cover picture is known Combined radar images from several radar sites Visible and infrared For IR, white or light gray clouds are colder temps or higher altitude Transmitted every 30 minutes Satell