Trough (meteorology)
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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 press
Representation of alternating troughs and ridges in upper-level westerlies for the Northern Hemisphere, with regions of convergence and divergence labeled.
Cyclogenesis
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Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere. Cyclogenesis is an umbrella term for at least three different processes, all of which result in the developm
This collage of GOES 13 satellite images shows the development of a nor'easter over two days.
This image displays a dense cloud pattern and arcing band of convection, indicating a young, developing cyclone.
The diffuse cloud pattern in this image indicates an old, low-pressure system undergoing Cyclolysis.
This image illustrates the relative positions of two storm systems over the north-eastern Pacific.