Image from page 269 of "Bell telephone magazine" (1922)
Title: Bell telephone magazine
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive
View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.
Text Appearing Before Image:
akewell over an hour to collect the infor-mation from all stations in NorthAmerica. As the weather data become avail-able, they are given immediately toa group of plotters in the WBANAnalysis Center whose job it is toenter the data on a large-scale chartso that they may be more compre-hensively understood in the laterstages of weather analysis. Thework is sub-divided among severalplotters so that several sections of the country are being plotted at thesame time. As fast as these sections are com-pleted, they are passed to a group ofweather analysts. These analysts in-clude some who specialize in the anal-ysis of surface weather conditions,while others concern themselves onlywith the analysis of upper air condi-tions. The job of these analysts Isto convert the data on the chart sec-tions Into those strange, wanderinglines, known as Isobars, which arefamiliar to all who have ever at-tempted to read a weather chart ormap and which give the trained fore- 236 Bell Telephone Magazine WINTER
Text Appearing After Image:
The objective of the whole process is an accurate local forecast by the Air Forceweather man at each air field. H. G. Stommel, technical assistant at WeatherAnalysis Center, is here shown working on a prognostic chart such as is shown on theopposite page which will go out over the facsimile network to assist in this firial step caster an instantaneous picture of thehigh- and low-pressure areas. Other information interpreted bythe analysts is the location of so-called fronts—the boundary areasbetween large masses of warm andcold air. By comparison with earliercharts, the analyst is able to showthe direction of movement of thefronts. Such analyses, particularlyof surface weather observations, areno mere matter of routine drafting.Many local conditions—the nature ofthe surrounding terrain, hills or moun-tains, rivers or other large bodiesof water, other topographical condi-tions—can influence the recordingsat any single point and it takes atrained and skillful analyst to inter-pret
Note About Images
Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.