altostratus

Thân thiện

A layer of altostratus clouds covers the sky before the rain.

Definition

1. Noun:
   • A stratus cloud at an intermediate altitude of 2 or 3 miles: "Altostratus" is a meteorological term for a mid-level cloud layer that is generally uniform and gray or bluish in color, often covering the sky entirely and potentially leading to light precipitation.

Usage

• "Altostratus" is used as a singular noun to describe a specific type of cloud formation. It is a technical term primarily used in weather reports, aviation, and scientific contexts.
• Example:

Examples

• Noun:
  • The pilot noted a thick layer of altostratus at 10,000 feet.
  • When altostratus clouds thicken, they often signal an approaching warm front.
  • The sky was a dull gray, obscured by a sheet of altostratus.

Advanced Usage

• "Altostratus translucidus": A variety of altostratus that is thin enough to reveal the sun or moon as if seen through ground glass.
  • We observed the sun as a bright disk through the altostratus translucidus.
• "Altostratus opacus": A variety of altostratus that is thick enough to completely hide the sun or moon.
  • The altostratus opacus layer made the day feel dark and gloomy.

Variants and Related Words

• Altocumulus (n): A mid-level cloud type composed of layers or patches of individual, rounded masses.
  • Altocumulus clouds often appear on fair weather days.
• Stratus (n): A low-level, uniform, gray cloud layer that often resembles fog.
  • The stratus cloud ceiling was very low this morning.

Synonyms

• Mid-level stratus cloud: A descriptive synonym emphasizing its altitude and type.
• Sheet cloud: An informal term describing its widespread, uniform appearance.

Related Phrases

• Altostratus undulatus: A variety characterized by a wavy, undulating base.
  • The altostratus undulatus created a beautiful pattern in the sky.
• Altostratus with virga: Altostratus from which precipitation (virga) is falling but evaporating before reaching the ground.
  • We could see streaks of virga descending from the altostratus layer.

Học thuật

Noun

1. a stratus cloud at an intermediate altitude of 2 or 3 miles

Từ đồng nghĩa

• altostratus cloud