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Polar Electro Oy (commonly known as Polar) is a Finnish manufacturer of sports training computers, particularly known for developing the world's first wireless heart rate monitor. [ 1 ] The company is based in Kempele , Finland and was founded in 1977.
The term "polar wind" was coined [7]: 1937 in 1968 in a pair of articles by Banks and Holzer [8] and by Ian Axford. [9] Since the process by which the ionospheric plasma flows away from the Earth along magnetic field lines, is similar to the flow of solar plasma away from the Sun's corona (the solar wind), Axford suggested the term "polar wind."
It can seem counterintuitive, but when the flow weakens, pieces of polar air can travel southward and create pools of bitterly cold air that often lead to uncomfortable and stormy results.
The polar jets, at lower altitude, and often intruding into mid-latitudes, strongly affect weather and aviation. [19] [20] The polar jet stream is most commonly found between latitudes 30° and 60° (closer to 60°), while the subtropical jet streams are located close to latitude 30°. These two jets merge at some locations and times, while at ...
Schematic of the Birkeland or Field-Aligned Currents and the ionospheric current systems they connect to, Pedersen and Hall currents. [1]A Birkeland current (also known as field-aligned current, FAC) is a set of electrical currents that flow along geomagnetic field lines connecting the Earth's magnetosphere to the Earth's high latitude ionosphere.
'Chicago Beach Keeps Locals Warm During Polar Vortex' – video new report from Voice of America. Chicago river frozen during 2019 polar vortex February 1, 2019. In the Chicago area, temperatures plummeted as low as −23 °F (−31 °C) at O'Hare International Airport on January 30, with a windchill of −52 °F (−47 °C).
In the battle of the seltzer wars, Polar Seltzer is a fan favorite. We ranked eight of the brand's classic flavors, including lime, lemon, and black cherry. I Tasted 8 Flavors of Polar Seltzer ...
The term 'auroral electrojet' is the name given to the large horizontal currents that flow in the D and E regions of the auroral ionosphere. Although horizontal ionospheric currents can be expected to flow at any latitude where horizontal ionospheric electric fields are present, the auroral electrojet currents are remarkable for their strength and persistence.