Hola amigos: A VUELO DE UN QUINDE EL BLOG., la Agencia Espacial NASA, nos hace llegar una hermosa fotografía de unas brillantes nubes de la noche en la atmósfera.
NASA, nos dice: "En el final de la primavera y el verano, nubes inusuales forman en la alta atmósfera por encima de las regiones polares del mundo. Como la atmósfera inferior se calienta, la atmósfera superior se enfría y cristales de hielo se forman en el polvo de meteoritos y otras partículas en el cielo alto. El resultado es noctilucentes o nubes ", que brilla de noche" (CEN) wisps azules electricos que crecen en el borde del espacio...."
More Infomation....http://www.nasa.gov/image-feature/night-shining-clouds
In the late spring and summer, unusual clouds form high in
the atmosphere above the polar regions of the world. As the lower
atmosphere warms, the upper atmosphere gets coooler, and ice crystals
form on meteor dust and other particles high in the sky. The result is
noctilucent or “night-shining” clouds (NLCs)—electric blue wisps that
grow on the edge of space.
NASA’s Aeronomy of Ice in the Mesosphere
(AIM) spacecraft observed noctilucent clouds on June 10, 2015. This
image is a composite of several satellite passes over the Arctic, and
the clouds appear in various shades of light blue to white, depending on
the density of the ice particles. The instrument measures albedo—how
much light is reflected back to space by the high-altitude clouds.
Noctilucent clouds were first described in the mid-19th century after
the eruption of the Krakatau volcano. Volcanic ash spread through the
atmosphere, making for vivid sunsets around the world and provoking the
first known observations of NLCs. At first people thought they were a
side-effect of the volcano, but long after Krakatau’s ash settled, the
wispy, glowing clouds remained.
In the past decade, AIM has been observing and measuring these
seasonal, high-altitude cloud formations. Researchers have found that
they are appearing earlier and stretching to lower latitudes with
greater frequency. There is some evidence that this is a result of
increased greenhouse gases in the atmosphere.
Though they were not thick enough to appear in AIM imagery, some
noctilucent clouds were visible to ground-based observers in the
continental United States on June 9 and 10.
Image Credit: NASA Earth Observatory map by Joshua Stevens, using
Polar Mesospheric Cloud data from the University of Colorado Laboratory
for Atmospheric and Space Physics
Caption: Mike Carlowicz
Caption: Mike Carlowicz
Last Updated: July 5, 2015
Editor: Sarah Loff
Tags: AIM (Aeronomy of Ice in the Mesosphere), Air, Ice, Image of the Day
NASA
Guillermo Gonzalo Sánchez Achutegui
ayabaca@gmail.com
ayabaca@hotmail.com
ayabaca@yahoo.com
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