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  2. Polar climate - Wikipedia

    en.wikipedia.org/wiki/Polar_climate

    The polar climate regions are characterized by a lack of warm summers but with varying winters. Every month a polar climate has an average temperature of less than 10 °C (50 °F). Every month a polar climate has an average temperature of less than 10 °C (50 °F).

  3. Köppen climate classification - Wikipedia

    en.wikipedia.org/wiki/Köppen_climate_classification

    The Köppen climate classification divides Earth climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are A (tropical), B (arid), C (temperate), D (continental), and E (polar). Each group and subgroup is represented by a letter.

  4. Continental climate - Wikipedia

    en.wikipedia.org/wiki/Continental_climate

    Regions where the continental climates (Dfa, Dfb, Dfc, Dfd) are found. Dfa = Hot-summer humid continental climate; coldest month averaging below 0 °C (32 °F) (or −3 °C (27 °F)), at least one month's average temperature above 22 °C (71.6 °F), and at least four months averaging above 10 °C (50 °F). No significant precipitation ...

  5. Air mass - Wikipedia

    en.wikipedia.org/wiki/Air_mass

    Colder air masses are termed polar or arctic, while warmer air masses are deemed tropical. Continental and superior air masses are dry, while maritime and monsoon air masses are moist. Weather fronts separate air masses with different density (temperature or moisture) characteristics.

  6. Arctic front - Wikipedia

    en.wikipedia.org/wiki/Arctic_front

    (cA is continental arctic; cP is continental polar; mP is maritime polar; cT is continental tropic; and mT is maritime tropic.) The Arctic front is the semipermanent, semi-continuous weather front between the cold arctic air mass and the warmer air of the polar cell. It can also be defined as the southern boundary of the Arctic air mass. [1]

  7. The Polar Vortex Explained

    www.aol.com/news/polar-vortex-explained...

    Instead, the polar vortex occurs primarily in the stratosphere, a layer of the atmosphere about 6 to 30 miles above the ground – above most of the weather with which you're familiar occurs ...

  8. Polar vortex makes much of US colder than Greenland, but ...

    www.aol.com/polar-vortex-makes-much-us-212453653...

    The average low temperature Wednesday in the continental United States was 13.7 degrees (minus 10.2 Celsius) and Thursday's average low looks to be a tenth of a degree colder, said private ...

  9. Ice cap climate - Wikipedia

    en.wikipedia.org/wiki/Ice_cap_climate

    An ice cap climate is a polar climate where no mean monthly temperature exceeds 0 °C (32 °F). The climate generally covers areas at high altitudes and polar regions (60–90° north and south latitude), such as Antarctica and some of the northernmost islands of Canada and Russia .