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1. en.wikipedia.org › wiki › Trough_(meteorology)Trough (meteorology) - Wikipedia

   en.wikipedia.org › wiki › Trough_(meteorology)

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   Troughs may be at the surface, or aloft, at altitude. Near-surface troughs sometimes mark a weather front associated with clouds, showers, and a wind direction shift. Upper-level troughs in the jet stream (as shown in diagram) reflect cyclonic filaments of vorticity. Their motion induces upper-level wind divergence, lifting and cooling the air ...

2. www.metlink.org › resource › weather-systems-2MetLink - Royal Meteorological Society Weather Systems

   www.metlink.org › resource › weather-systems-2

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   • Trough
   • Introduction
   • Development of A Depression

   Whereas fronts separate air masses, which are different in temperature, troughs generally develop in cold air and are characterised by an increase in the frequency and intensity of showers. Pressure begins to fall as the trough approaches and often rises sharply once it has passed. As with fronts, the wind tends to back ahead of the trough and to v...

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   A depression is an area of low pressure and is associated with unsettled weather. This is due to the fact that the air within the depression is rising, causing it to cool and the water vapour within it to condense into clouds. This rising air within a depression causes an area of low pressure at the surface. The deeper the depression (or low), the ...

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   Stage 1 – Origin and infancy

   The depression usually starts life as a wave, shown on a chart by ‘buckling’ on a front. At this stage, the air is warm to the south of the front and relatively cold to the north of it. The weather in the warm air can vary from fine and sunny to cloudy, sometimes with drizzle and perhaps even with fog. The type of cloud is layered or stratiform and is not very thick. In the cold air, there is usually some cloud, but it tends to be more broken, appearing as discrete speckles on a satellite ima...

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3. Videos

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     3:55

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     Trough (meteorology)

     3 Dec 2015

     4.7K views

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     2:27

     youtube.com

     Identifying Troughs and Ridges

     12 Feb 2014

     58.8K views

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     4:15

     youtube.com

     Weather School - Ridges & Troughs, what do they mean?

     11 Feb 2013

     38.9K views

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4. www.metoffice.gov.uk › weather › learn-aboutHow to read synoptic weather charts - Met Office

   www.metoffice.gov.uk › weather › learn-about

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   The air trapped between a warm and cold front is called a 'warm sector' and we often see low cloud and patchy light rain associated with this type of air. Troughs. Black lines that have no...

5. climavision.com › blog › weather-troughs-formationsWeather Troughs: Formations, Impacts, and Types - Climavision

   climavision.com › blog › weather-troughs-formations

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   Oct 24, 2023 · In this blog post, we will delve into what weather troughs are, the different types of troughs that occur in our atmosphere, how they form, the difference between troughs and fronts, the type of weather associated with troughs, and how the resulting weather impacts businesses.

6. en.wikipedia.org › wiki › Weather_frontWeather front - Wikipedia

   en.wikipedia.org › wiki › Weather_front

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   A weather front is a boundary separating air masses for which several characteristics differ, such as air density, wind, temperature, and humidity. Disturbed and unstable weather due to these differences often arises along the boundary.

7. www.metoffice.gov.uk › binaries › contentWeather charts - Met Office

   www.metoffice.gov.uk › binaries › content

   A trough (of low pressure) is a pressure feature of the synoptic chart; it is characterised by a system of isobars which are concave towards a depression and have maximum curvature along the axis...

8. www.dpi.nsw.gov.au › __data › assetsUnderstanding weather - fronts, troughs and ridges

   www.dpi.nsw.gov.au › __data › assets

   Troughs have the potential to intensify rapidly, generally at the expense of the cold front, resulting in strengthening of the northerly winds ahead of a cool change. In summer the major significant wind change is associated with prefrontal troughs. Figure 2 shows a cold front and prefrontal trough through SA and Victoria. An easterly dip (not ...