Ethereal Sapphire Blue Clouds Veil Antarctica

NASA is monitoring an expansive ring of sapphire blue clouds encircling Antarctica. These noctilucent clouds are exhibiting high radar reflectivity. NASA claims these are “noctilucent clouds (NLCs)”, made of ice crystals frosting specks of “Notimeteor smoke” in the mesosphere above the frozen continent. Noctilucent clouds are are relatively new weather phenomena. They are a tenuous cloud-like night time phenomena. Noctilucent clouds often appear as featureless bands, but frequently show distinctive patterns such as streaks, wave-like undulations, and whirls. They are only visible during deep twilight. NLC’s are made of ice crystals. Noctilucent in Latin means night shining. The occurrence of noctilucent clouds appears to be increasing in frequency, brightness.