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Meteorology

سحابة عدسية ثابتة

A smooth, lens-shaped cloud that forms at high altitudes in the crest of mountain waves; often stationary, and indicative of significant atmospheric turbulence downwind of mountain ranges.

Quick answer: A smooth, lens-shaped cloud that forms at high altitudes in the crest of mountain waves; often stationary, and indicative of significant atmospheric turbulence downwind of mountain ranges.

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Quick answer

A smooth, lens-shaped cloud that forms at high altitudes in the crest of mountain waves; often stationary, and indicative of significant atmospheric turbulence downwind of mountain ranges.

Why it matters

سحابة عدسية ثابتة matters because it supports clear communication in Meteorology contexts for Pilots, Air Traffic Controllers, and Cabin Crew. It also connects to aviation training and exam language such as ICAO Level 4, ICAO Level 5, ICAO Level 6, and EASA FCL.055.

Editorial context

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Questions and answers

Questions and answers

What is سحابة عدسية ثابتة?

In this glossary, سحابة عدسية ثابتة refers to: A smooth, lens-shaped cloud that forms at high altitudes in the crest of mountain waves; often stationary, and indicative of significant atmospheric turbulence downwind of mountain ranges.

How is سحابة عدسية ثابتة used in aviation?

In aviation communication, this term appears in contexts such as: "إخطار جميع الطائرات عن وجود سحابة عدسية ثابتة على ارتفاع طيران ١٢٠ جنوب المطار؛ من المتوقع حدوث اضطرابات."

Why does سحابة عدسية ثابتة matter in aviation?

سحابة عدسية ثابتة matters because it supports clear communication in Meteorology contexts for Pilots, Air Traffic Controllers, and Cabin Crew. It also connects to aviation training and exam language such as ICAO Level 4, ICAO Level 5, ICAO Level 6, and EASA FCL.055.

Who uses سحابة عدسية ثابتة?

سحابة عدسية ثابتة is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does سحابة عدسية ثابتة belong to?

In this glossary, سحابة عدسية ثابتة is grouped under Meteorology. Related pages in this category explain adjacent procedures, commands and operational concepts.

Where does this definition come from?

This definition is sourced from ICAO Doc 9432, FAA PCG and published by Protermify Aviation as a static aviation reference page.

Definition

A smooth, lens-shaped cloud that forms at high altitudes in the crest of mountain waves; often stationary, and indicative of significant atmospheric turbulence downwind of mountain ranges.

Operational example

Advise all aircraft of a standing lenticular cloud reported at flight level one two zero south of the field; possible turbulence expected.

Localized term

سحابة عدسية ثابتة

Localized example

إخطار جميع الطائرات عن وجود سحابة عدسية ثابتة على ارتفاع طيران ١٢٠ جنوب المطار؛ من المتوقع حدوث اضطرابات.

Definition language

English reference definition

Source

ICAO Doc 9432, FAA PCG

Category

Meteorology

Exam relevance

  • ICAO Level 4
  • ICAO Level 5
  • ICAO Level 6
  • EASA FCL.055

Target audience

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

Related terms

Use the related links below to continue through connected aviation terminology.

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