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  2. Ionosphere - Wikipedia

    en.wikipedia.org/wiki/Ionosphere

    Relationship of the atmosphere and ionosphere. The ionosphere (/ aɪ ˈ ɒ n ə ˌ s f ɪər /) [1] [2] is the ionized part of the upper atmosphere of Earth, from about 48 km (30 mi) to 965 km (600 mi) above sea level, [3] a region that includes the thermosphere and parts of the mesosphere and exosphere. The ionosphere is ionized by solar ...

  3. F region - Wikipedia

    en.wikipedia.org/wiki/F_region

    The F region of the ionosphere is home to the F layer of ionization, also called the Appleton–Barnett layer, after the English physicist Edward Appleton and New Zealand physicist and meteorologist Miles Barnett. As with other ionospheric sectors, 'layer' implies a concentration of plasma, while 'region' is the volume that contains the said layer.

  4. International Reference Ionosphere - Wikipedia

    en.wikipedia.org/wiki/International_Reference...

    For a specified geographic location, time, and date, IRI provides average monthly values for electron density, electron temperature and ion temperature, and the molecular composition of the ions in the range of altitudes from 50 km to 2000 km. [1] The latest standard is IRI-2012. [1] [2] A new version, IRI-2016, has since been released. [3]

  5. Upper atmosphere - Wikipedia

    en.wikipedia.org/wiki/Upper_atmosphere

    The ionosphere, an ionized portion of the upper atmosphere which includes the upper mesosphere, thermosphere, and lower exosphere and on Earth lies between the altitudes of 48 and 965 kilometres (30 and 600 mi)

  6. Lower Rio Grande Valley - Wikipedia

    en.wikipedia.org/wiki/Lower_Rio_Grande_Valley

    The Lower Rio Grande Valley (Spanish: Valle del Río Grande), commonly known as the Rio Grande Valley of South Texas or locally as the Valley or RGV, is a region spanning the border of Texas and Mexico located in a floodplain of the Rio Grande near its mouth. [1]

  7. Scientists have spotted unexpected X- and C-shaped ... - AOL

    www.aol.com/news/scientists-spotted-unexpected-x...

    Scientists studying the zone between Earth’s atmosphere and space have spotted unusual X- and C-shaped features that could thwart signals that keep our planet running smoothly.

  8. Atmosphere of Earth - Wikipedia

    en.wikipedia.org/wiki/Atmosphere_of_Earth

    In this layer ozone concentrations are about 2 to 8 parts per million, which is much higher than in the lower atmosphere but still very small compared to the main components of the atmosphere. It is mainly located in the lower portion of the stratosphere from about 15–35 km (9.3–21.7 mi; 49,000–115,000 ft), though the thickness varies ...

  9. Brownsville–Matamoros - Wikipedia

    en.wikipedia.org/wiki/Brownsville–Matamoros

    In addition, this transnational conurbation area has a population of 1,136,995, [6] making it the fourth-largest metropolitan area on the Mexico-U.S. border. [ 7 ] The area of Matamoros–Brownsville lies among the top-10 fastest-growing urban areas in the United States. [ 8 ]