Editing Rossby wave (section)

{{Short description|Inertial wave occurring in rotating fluids}}
{{Use dmy dates|date=March 2021}}
[[File:Jetstream - Rossby Waves - N hemisphere.svg|thumb|451x451px|Meanders of the Northern Hemisphere's [[jet stream]] developing around the northern [[polar vortex]] (a, b) and finally detaching a "drop" of cold air (c). Orange: warmer masses of air; pink: jet stream; blue: colder masses of air.]]

'''Rossby waves''', also known as '''planetary waves''', are a type of [[inertial wave]] naturally occurring in rotating fluids.<ref name="WhatIs">{{cite web |title=What is a Rossby wave? |url=https://oceanservice.noaa.gov/facts/rossby-wave.html |website=National Oceanic and Atmospheric Administration }}</ref> They were first identified by Sweden-born American meteorologist [[Carl-Gustaf Arvid Rossby]] in the [[Earth's atmosphere]] in 1939. They are observed in the [[atmosphere]]s and [[ocean]]s of Earth and other planets, owing to the [[rotation of Earth]] or of the planet involved. Atmospheric Rossby waves on Earth are giant [[meanders]] in high-[[altitude]] [[wind]]s that have a major influence on [[weather]]. These waves are associated with [[pressure systems]] and the [[jet stream]] (especially around the [[Polar vortex|polar vortices]]).<ref>{{cite book |title=Dynamic Meteorology |page=347 |year=2004 |first=James R. |last=Holton |publisher=Elsevier |isbn=978-0-12-354015-7}}</ref> Oceanic Rossby waves move along the [[thermocline]]: the boundary between the warm upper layer and the cold deeper part of the ocean.