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  2. List of coordinate charts - Wikipedia

    en.wikipedia.org/wiki/List_of_coordinate_charts

    Charts n-spheres: n-sphere S n: Hopf chart. Hyperspherical coordinates. Sphere S 2: Spherical coordinates. Stereographic chart Central projection chart Axial projection chart Mercator chart. 3-sphere S 3: Polar chart. Stereographic chart Mercator chart. Euclidean spaces: n-dimensional Euclidean space E n: Cartesian chart: Euclidean plane E 2 ...

  3. 1985 North American cold wave - Wikipedia

    en.wikipedia.org/wiki/1985_North_American_cold_wave

    A map of the United States detailing the record-low temperatures for various cities on January 21, 1985. The 1985 North America cold wave [1] was a meteorological event which occurred in January 1985 as a result of the shifting of the polar vortex farther south than is normally seen. [1]

  4. Polar vortex headed for US will bring ‘exceptionally cold ...

    www.aol.com/news/polar-vortex-headed-us-bring...

    During the 2014 January polar vortex, more than 20 people across the country died from the cold as places like Georgia — which rarely see serious cold — dealt with lows under 10 degrees ...

  5. Polar diagram - Wikipedia

    en.wikipedia.org/wiki/Polar_diagram

    A polar diagram could refer to: Polar area diagram, a type of pie chart; Radiation pattern, in antenna theory; A diagram based on polar coordinates; Spherical coordinate system, the three-dimensional form of a polar response curve; In sailing, a Polar diagram is a graph that shows a sailing boats potential wind speed over a range of wind and ...

  6. Cincinnati, OH Weather - Hourly Forecasts and Local ... - AOL

    www.aol.com/weather/forecast/us/cincinnati-12777170

    Get the Cincinnati, OH local weather forecast by the hour and the next 10 days. ... An arctic air mass will channel temperatures 20-30 degrees below already historically cold January averages ...

  7. 2014–15 North American winter - Wikipedia

    en.wikipedia.org/wiki/2014–15_North_American...

    A quasi-permanent phenomenon referred to as the polar vortex may have been partly responsible for the cold weather. Temperatures in much of the United States dropped 15 to 35 °F (8.3 to 19 °C) below average by November 19, following a southward "dip" of the polar vortex into the eastern two-thirds of the country.

  8. Stereographic map projection - Wikipedia

    en.wikipedia.org/wiki/Stereographic_map_projection

    Stereographic projection of the world north of 30°S. 15° graticule. The stereographic projection with Tissot's indicatrix of deformation.. The stereographic projection, also known as the planisphere projection or the azimuthal conformal projection, is a conformal map projection whose use dates back to antiquity.

  9. Will Cincinnati break heat records this week? Here's what the ...

    www.aol.com/cincinnati-break-heat-records-week...

    Here are the all-time high temperatures in the Cincinnati region and how they compare to the forecast as of Monday night. Tuesday, June 18 The hottest June 18 on record was in 1944 when it was 99 ...