What is a trough line?

A trough is an elongated (extended) region of relatively low atmospheric pressure, often associated with fronts. The weather charts in some countries or regions mark troughs by a line. In the United States, a trough may be marked as a dashed line or bold line.Click to see full answer. Also, what is a weather trough and ridge?Ridges and troughs are often mentioned on the weather forecast. A ridge is an elongated area of relatively high pressure extending from the center of a high-pressure region. A trough is an elongated area of relatively low pressure extending from the center of a region of low pressure.Similarly, what is meant by low pressure trough? trough of low pressure. A pressure system in which the isobars around a low pressure become elongated such that the pressure is lower along the axes of the trough than on its two sides. Active weather fronts always lie in troughs, but not all troughs are frontal. Beside this, what does a trough look like? 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. 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.What is a ridge in aviation?A ridge is a region with relatively higher heights. A broad region of sinking air or a deep warm air mass will both lead to ridging. Since air is often sinking within a ridge they tend to bring warmer and drier weather. Troughs and ridges are analyzed on pressure surfaces aloft such as 850, 700, 500 and 300 mb.

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