The NASA scientists have released a new image of Earth at night, providing the clearest yet composite view of human settlement across our planet.This image of the Earth at night, dubbed as “night lights” is a composite image assembled from data acquired by the Suomi National Polar-orbiting Partnership satellite over the last year.
The NASA scientists are also releasing a revised version of the images of Earth at night obtained during the year 2012 for comparison.Take a look at these two images of India showing how cities have grown and populations have spread in the past few years. The image below is from 2016. Compare it to the second one from 2012.
The image was made possible by the satellite possible by the satellite ‘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.
Armed with more accurate night-time environmental products, the NASA team is now automating the processing so that users will be able to view night-time imagery within hours of acquisition. “This has the potential to aid short-term weather forecasting and disaster response,” NASA said.
NASA’s Image of Earth at Night From Space