What Is Trough?
An elongated area of low pressure, often bringing clouds, rain, and cooler weather. In technical terms: An elongated region of relatively low pressure or geopotential height with cyclonic curvature; on upper-air charts, the equatorward dip of height contours; the area ahead (downstream) of an upper trough is typically favored for ascent.
Also called: Trough Axis
Trough In Plain English
An elongated area of low pressure, often bringing clouds, rain, and cooler weather.
The Technical Definition
An elongated region of relatively low pressure or geopotential height with cyclonic curvature; on upper-air charts, the equatorward dip of height contours; the area ahead (downstream) of an upper trough is typically favored for ascent.
Lessons That Use Trough
- Highs, Lows, Troughs And Ridges Unit 3: Wind And Pressure Systems
- Water Vapor Imagery And The Upper Air Unit 13: Weather Satellites
