A New Frontier of Nighttime Environmental Sensing Brought to Light by the Suomi NPP VIIRS Day/Night Band
These findings expand substantially the possibilities for satellite-based nocturnal environmental monitoring, and hold significance to both the research and operational communities. Previously, low-light cloud observation at night was limited at best to periods of sufficient moonlight. The current findings suggest that some form of visible-based observation may be possible at all times—thereby extending many current satellite applications. This new capability is particularly relevant to addressing fundamental limitations of traditional infrared methods at night, to which numerous weather and climate applications fall casualty. In addition, the DNB's discovered ability to measure the primary airglow emission and resolve mesospheric wave structures provides connectivity between tropospheric disturbances and upper-atmospheric response. We expect that news of this new capability will lead to seminal, interdisciplinary research in the areas of atmospheric science (including the coupling of lower and upper atmospheric research) and near-space environment—and potentially motivate the design of a series of next-generation satellite remote sensing systems optimized to exploit these unconventional low-light signals.