Rossby waves, also known as planetary waves, are a type of inertial wave naturally occurring in rotating fluids. They were first identified by Sweden-born American meteorologist Carl-Gustaf Arvid Rossby. They are observed in the atmospheres and oceans of planets owing to the rotation of the planet. He said that these waves drive the lower pressure systems and should be carefully studied and understood. However, some people say that polar jet stream play an important role in the weather of the northern hemisphere. All I want is a simple explanation of this issue.
Regards
All jet streams control the weather below them, however they should be considered as part of the surface weather, but occurring on the upper part of the atmosphere. They don't function separately on their own.
Dear Thaer,
The presence of the polar jet stream is always associated with a baroclinic zone (temperature gradient) to the southern boundary of the jet. Weather fronts occur there (see presentation attached). Rain, clouds, and turbulence are normally associated with fronts and polar jets. Polar jets have oscillation just as Rossby waves. They are connected. The stronger the amplitude of the Rossby wave, the stronger the polar jet, the stronger the front, and the more intense are low pressure and fronts.
https://www.ess.uci.edu/~yu/class/ess124/Lecture.8.pressure.2019w.all.pdf
Hope that is clear.
Dear Michael Issigonis
The situation of the Middle East which is located under the subtropical high belt. Here, the effect is for the subtropical jet stream which is not very effective in cyclogenesis. Instead, it is mostly associated with the high pressure underneath. Sure, we should take the whole picture of jet stream and surface weather as a one systems.
Regards
Dear Alain Robichaud
Thanks indeed, it is clear.
The presentation is very good and deserves a deep study.
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