GEOG 2505 Lecture Notes - Lecture 37: Coordinated Universal Time, Greenwich Mean Time, Edward Norton Lorenz
Document Summary
The due date for all assignments is tuesday, december 11 at 11:59 pm. Exam review day and help session: monday, december 3 and wednesday, Shows position of low for each ensemble member. Tightly packed cyclone locations = high confidence forecast. Wide variation in cyclone locations = low confidence forecast. A note about time: gmt(greenwich mean time, utc(coordinated universal time) Z(zulu time: all refer to a standard 24hr worldwide clock, used for coordinating times without resorting to confusing time zones. Important for establishing a snapshot in time for weather data collection: conversion to est & edt: gmt is 5 hrs. ahead of est; 4 hrs. ahead of edt. Est: 12z: 1200hrs 5 = 700hrs or 7:00am. 18z: 1800hrs 5 = 1300hrs or 1:00pm. Edt: 12z: 1200hrs 4 = 800hrs or 8:00am. 18z: 1800hrs 4 = 1400hrs or 2:00pm. The world always launches weather balloons at 12 noon gmt. Major model run times: 12z, 18z, 0z, 06z (7:00am, 1:00pm, 7:00pm, 1:00am)
