Search results
Results from the WOW.Com Content Network
By acting as a heat sink, the polar cell moves the abundant heat from the equator toward the polar regions. The polar cell, terrain, and katabatic winds in Antarctica can create very cold conditions at the surface, for instance the lowest temperature recorded on Earth: −89.2 °C at Vostok Station in Antarctica, measured in 1983. [6] [7] [8]
The polar of the closed convex cone C is the closed convex cone C o, and vice versa. For a set C in X , the polar cone of C is the set [ 4 ] C o = { y ∈ X ∗ : y , x ≤ 0 ∀ x ∈ C } . {\displaystyle C^{o}=\left\{y\in X^{*}:\langle y,x\rangle \leq 0\quad \forall x\in C\right\}.}
The shutting down of the current would also mean that warm water in the middle latitudes would get even warmer, potentially giving rise to more tropical storms and hurricanes.
The "polar vortex" that plunged Canada and the U.S. into historical cold last winter is said by researchers to have occurred because melting polar ice changes weather patterns, according to a ...
Relationship of Earth's axial tilt (ε) to the tropical and polar circles. The Arctic Circle is the southernmost latitude in the Northern Hemisphere at which the centre of the Sun can remain continuously above or below the horizon for twenty-four hours; as a result, at least once each year at any location within the Arctic Circle the centre of the Sun is visible at local midnight, and at least ...
The term "pointed" is also often used to refer to a closed cone that contains no complete line (i.e., no nontrivial subspace of the ambient vector space V, or what is called a salient cone). [29] [30] [31] The term proper (convex) cone is variously defined, depending on the context and author. It often means a cone that satisfies other ...
By measuring the temperatures of these intergalactic ribbons, it is possible to determine the temperature of the Universe during different eras. This is accomplished through a process known as the ...
In the height region between about 85 and 200 km altitude on Earth, the ionospheric plasma is electrically conducting. Atmospheric tidal winds due to differential solar heating or due to gravitational lunar forcing move the ionospheric plasma against the geomagnetic field lines thus generating electric fields and currents just like a dynamo coil moving against magnetic field lines.