Diwali, also known as Deepavali, is a significant Hindu festival celebrated by millions of people around the world. Professor Suomi’s original satellite radiometer in 1959 was simple, but his vision of examining the Earth with greater detail and better understanding from space will continue into the future.Diwali captions for Instagram refer to the use of relevant and engaging phrases or quotes that can be used as captions for posts on the popular social media platform, Instagram, during the festive season of #Diwali. Image and caption credit: NASA Earth Observatory/NOAA NGDC.Īs a polar-orbiting satellite, Suomi NPP passes over every square inch of the Earth twice each day once at 1:30 am local time and once at 1:30 pm local time, collecting a 3,000 kilometer wide swath of information as it passes over. The image was made possible by the satellite’s “day-night band” of the Visible Infrared Imaging Radiometer Suite (VIIRS), which detects light in a range of wavelengths from green to near-infrared and uses filtering techniques to observe dim signals such as city lights, gas flares, auroras, wildfires and reflected moonlight. This image of the continental United States at night is a composite assembled from data acquired by the Suomi NPP satellite in April and October 2012. The DNB, which detects light in a range of wavelengths from green to near-infrared, is sensitive enough to capture the light of a single ship at sea, the aurora, or even clouds lit by very faint, nocturnal atmospheric light called airglow. One of the channels of the VIIRS is the Day-Night Band (DNB). One of five advanced instruments aboard the Suomi NPP is the Visible Infrared Imaging Radiometer Suite ( VIIRS), which gathers photons in 22 different wavelengths. Dense marine fogs, which often form at night, can be seen and tracked, giving confidence to forecasters as they issue advisories to the public. Wildfires can be distinguished from oil field gas flares city lights can be studied to track urban and suburban growth or how quickly power is restored after a natural disaster. Such details were seen as Hurricane Sandy smashed into New Jersey on the evening of October 29. Under the light of the moon, the DNB can discern details previously only available to visible channels during the day. Image and caption credit for both images: NASA Earth Observatory/NOAA NGDC. This new data was then mapped over existing Blue Marble imagery of Earth to provide a realistic view of the planet. It took the satellite 312 orbits and 2.5 terabytes of data to get a clear shot of every parcel of Earth’s land surface and islands. The data was acquired over nine days in April 2012 and thirteen days in October 2012. These views of Earth’s city lights are composites assembled from data acquired by the Suomi National Polar-orbiting Partnership (Suomi NPP) satellite. Today, NASA and NOAA released unprecedented new images – a cloud free image of planet Earth, at night, and yet alive with light. The Suomi NPP has been supplying valuable science, and incredible images, since it was launched. In January of 2012, NASA and NOAA re-named their newest Earth-observing satellite in his honor: the Suomi National Polar-Orbiting Partnership. Launched on the Explorer 7 satellite in 1959, Suomi and Parent’s radiometer, which measured heat coming into and radiated from Earth, revolutionized how we see our planet. These images are the legacy of Suomi, who conceived, designed, and built in collaboration with Parent the first instrument to study Earth’s climate from space. And for decades, spectacular images of the “blue marble,” Earth bathed in the light of the sun, have been the quintessential satellite view of Earth. Known as the Father of Satellite Meteorology Suomi, along with Professor of Engineering Robert Parent, created such innovations as the spin-scan camera which supplied the first full-color images of Earth from space (and pioneered continuous viewing of weather from space). He saw a future where orbiting satellites could look down from the heights and study our home planet from a perspective never before available. In the late 1950’s, UW-Madison Professor Verner Suomi had a vision.
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