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A sudden stratospheric warming (SSW) is an event in which polar stratospheric temperatures rise by several tens of kelvins (up to increases of about 50 °C (90 °F)) over the course of a few days. [ 1] The warming is preceded by a slowing then reversal of the westerly winds in the stratospheric polar vortex.
Rossby waves, also known as planetary waves, are a type of inertial wave naturally occurring in rotating fluids. [ 1] 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 atmospheres and oceans of Earth and other planets, owing to the rotation of ...
A Sudden Stratospheric Warming miles above the North Pole (a natural event) with a warmed Arctic due to climate change piggy backing on that pattern = unstable PV & wavy extreme jet stream, with ...
Brewer–Dobson circulation refers to the global atmospheric circulation pattern of tropical tropospheric air rising into the stratosphere and then moving poleward as it descends. [1] The basics of the circulation were first proposed by Gordon Dobson [2] [3] and Alan Brewer. [4] The term "Brewer–Dobson circulation" was first introduced in ...
This causes masses of warm air to destabilize the normally strong polar air mass and send brutally cold air right at Canada and the U.S., according to Slate. As the atmosphere continues to warm ...
A sudden stratospheric warming (SSW) is an event that occurs when the stratospheric vortex breaks down during winter, and can have significant impacts on surface weather. [ citation needed ] The tropospheric polar vortex is often defined as the area poleward of the tropospheric jet stream .
“We did have a sudden stratospheric warming in January,” explained Butler, a NOAA stratosphere expert. “The polar vortex weakened. “The polar vortex weakened. It got stretched out of shape ...
Quasi-biennial oscillation. The quasi-biennial oscillation ( QBO) is a quasiperiodic oscillation of the equatorial zonal wind between easterlies and westerlies in the tropical stratosphere with a mean period of 28 to 29 months. The alternating wind regimes develop at the top of the lower stratosphere and propagate downwards at about 1 km (0.6 ...