According tomedia CNET, the “night-time clouds” describe night-time light clouds that remain in the middle atmosphere of Mesosphere, the upper atmosphere above the stratosphere. NASA describes these fascinating clouds as “ice blue” and “beautiful” and glows even after the sun goes down.
NASA scientists signalled the arrival of the Arctic night-time cloud season in a press release Thursday. NASA’s mid-level atmospheric physics AIM spacecraft spotted signs of these clouds on May 17 and observed their expansion. The “clouds of the night” are somewhat different from the often-discovered fluffy cumulus and cloud patterns. They are formed around the middle dust particles. “The icy clouds reflect the sun and glow bright blue-and-white,” NASA said. “
NASA’s animated observations of AIM show cloud growth from May 17 to May 25. Jim Russell, AIM’s chief investigator, called the launch of the cloud season “a big deal for us.” This year’s start time is the second-highest in the Arctic on record. “The reason we’re excited is that we’re trying to figure out why the cloud season is starting and what it means for the atmosphere,” Russell said. “Researchers will see if these clouds move as far south as they did in 2019, when they can be seen in California, New Mexico and Oklahoma, California, New Mexico and Oklahoma.
Night clouds are not purely earth phenomena. NASA’s Curiosity rover captured the night light cloud on Mars in 2019.