Hola amigos: A VUELO DE UN QUINDE EL BLOG., la Agencia Espacial NASA, nos entrega una espectacular imagen donde se aprecia el brillo de las ciudades durante las vacaciones en el este de Los Estados Unidos, se observa : Baltimore, Washington D.C., Virginia Beach, etc.,
City Lights Shine Brighter During the Holidays
City lights shine brighter during the holidays when compared with the rest of
the year, as shown using a new analysis of daily data from the NASA-NOAA Suomi
National Polar-orbiting Partnership (Suomi NPP) satellite. Dark green pixels are
areas where lights are 50 percent brighter, or more, during December.
This new analysis of holiday lights uses an advanced algorithm, developed at
NASA's Goddard Space Flight Center in Greenbelt, Maryland, that filters out
moonlight, clouds and airborne particles in order to isolate city lights on a
daily basis. The data from this algorithm provide high-quality satellite
information on light output across the globe, allowing scientists to track when
– and how brightly – people illuminate the night. A daily global dynamic dataset
of nighttime lights is a new way for researchers to understand the broad
societal forces impacting energy decisions and to look at how people use cities,
from an energy perspective.
Image Credit: NASA's Earth Observatory/Jesse
Allen
Guillermo Gonzalo Sánchez Achutegui
ayabaca@gmail.com
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ayabaca@yahoo.com
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