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1. • 

     geo.libretexts.org

     • A trough is an elongated region of relatively low atmospheric pressure without a closed isobaric contour that would define it as a low pressure area. Since low pressure implies a low height on a pressure surface, troughs and ridges refer to features in an identical sense as those on a topographic map.
     en.wikipedia.org/wiki/Trough_(meteorology)

     Trough (meteorology) - Wikipedia

2. People also ask

   Why are troughs and ridges important?

   • Troughs and ridges are important features in predicting the weather. They can tell you whether rain or snow is on the way or if dry conditions are likely. So, pay attention next time the weather comes because knowing where you are in regards to a trough or ridge will help you understand your weather forecast.

   What are Troughs and Ridges - DTN

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   What are troughs and ridges?

   • If you watch the weather on the nightly news, you may hear about troughs and ridges. Have you ever wondered what they are and why they are important? Troughs and ridges look like what you might expect; a trough is roughly U shaped. To the east of the trough, air will usually rise, allowing for the development of precipitation.

   What are Troughs and Ridges - DTN

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   How do Troughs form?

   • Troughs form when the jet stream dips southward into a bowl-like shape, and are associated with colder air, low pressure aloft, and a less stable atmosphere. This tends to result in cooler and more unsettled weather conditions.

   Understanding Ridges and Troughs - OpenSnow

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   What does trough mean?

   • The term ‘trough’ is also, and in accordance with this definition, applied to equatorward meanders of the flow of the upper westerly winds over middle latitudes. (The ‘equatorial trough’, where trade winds meet, is synonymous with the ‘intertropical convergence zone’.) See also long wave. 2 The lowest point of a fold surface.

   Trough - Oxford Reference

   www.oxfordreference.com/display/10.1093/oi/authority.20110803105852368

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   How do meteorologists evaluate ridges and troughs?

   • When evaluating ridges and troughs, meteorologists look at wind and pressure both at the surface and in the upper levels of the atmosphere. However, it is in the upper levels where wind, pressure, and temperature drive global weather patterns which in turn influence what happens at ground level.

   Understanding Ridges and Troughs - OpenSnow

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   What is an approaching trough?

   • Approaching troughs are associated with frontal storm systems that can produce all different types of weather depending on the time of year, from snow in the winter months to thunderstorms and heavy rain in the spring and summer.

   Understanding Ridges and Troughs - OpenSnow

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3. www.savemyexams.com › gcse › geographyGlacial Landforms: Troughs & Corries GCSE Geography Revision

   www.savemyexams.com › gcse › geography

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   Aug 9, 2024 · Learn about the formation of glacial landforms from corries to troughs, along with examiner tips and worked examples for the AQA GCSE Geography exam.

4. geo.libretexts.org › Bookshelves › Geography3.4.7: Extratropical Ridges and Troughs (Rossby Waves)

   geo.libretexts.org › Bookshelves › Geography

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   May 28, 2023 · The equatorward region of any meander is called a trough (pronounced like “troff”) and is associated with low pressure or low geopotential height. The poleward portion of a meander is called a ridge, and has high pressure or height.

5. Videos

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     Identifying Troughs and Ridges

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     Why Is Geography Important?

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6. www.bbc.co.uk › bitesize › guidesU-shaped valleys and their features - Glaciated upland ... - BBC

   www.bbc.co.uk › bitesize › guides

   U-shaped valleys. , or troughs, with a flat floor and steep sides. The glacier uses the processes of plucking and abrasion to widen, steepen, deepen and smooth 'V'-shaped river...

7. www.ncesc.com › what-is-a-ridge-vs-trough-on-a-mapWhat is a ridge vs trough on a map? - Geographic Pedia - NCESC

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   Jun 27, 2024 · Ridges and troughs are crucial features in weather prediction. Troughs are often associated with unstable atmospheric conditions, indicating the potential for rain or stormy weather. On the other hand, ridges are often associated with more stable atmospheric conditions, indicating the likelihood of fair weather.

8. www.dtn.com › what-are-troughs-and-ridgesWhat are Troughs and Ridges - DTN

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   Apr 21, 2016 · Troughs are found near low pressure areas while ridges are found near high pressure. Below is an example of what they tend to look like. Troughs and ridges are important features in predicting the weather. They can tell you whether rain or snow is on the way or if dry conditions are likely.

9. opensnow.com › understanding-ridges-and-troughsUnderstanding Ridges and Troughs - OpenSnow

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   May 10, 2024 · Troughs form when the jet stream dips southward into a bowl-like shape, and are associated with colder air, low pressure aloft, and a less stable atmosphere. This tends to result in cooler and more unsettled weather conditions.

10. www.oxfordreference.com › display › 10Trough - Oxford Reference

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    Sep 29, 2024 · Quick Reference. 1 An extension of low atmospheric pressure from the central regions of a low-pressure system into a zone where generally higher pressure prevails. The term ‘trough’ is also, and in accordance with this definition, applied to equatorward meanders of the flow of the upper westerly winds over middle latitudes. (The ...