TERMIUM Plus®

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PILOT-BALLOON METEOROLOGICAL PLOTTING BOARD [1 record]

Record 1 2015-03-12

English

Subject field(s)
  • Statistical Graphs and Diagrams
  • Meteorological Forecasting, Data Measurement and Analysis
DEF

A board upon which the horizontal trajectory of a pilot-balloon is plotted and the wind speeds and directions determined.

OBS

Pilot Balloon - Meteorological Plotting Board. Observations of a pilot balloon ascent, made by a theodolite are solved for wind speed and direction by graphical means using a plotting board. This method was used in the United States military and civilian weather services until the wide spread adoption of computer programs for solving the sightings. This board is used with a standard slide rule as opposed to the U.K. Met. Office Pilot Balloon Slide Rule.

Key term(s)
  • pilot balloon meteorological plotting board
  • pilot-balloon plotting board
  • pilot-balloon meteorological plotting board
  • pibal plotting board

French

Domaine(s)
  • Diagrammes et graphiques (Statistique)
  • Prévisions météorologiques et mesure et analyse des données
DEF

Graphique sur lequel on reporte la trajectoire horizontale d'un ballon-pilote et on détermine les directions et les vitesses du vent.

Spanish

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