Posts Tagged: noctilucent clouds

Polar mesospheric cloud season underway

According to Cora Randall, CU professor and LASP research associate, the Aeronomy of Ice in the Mesosphere (AIM) Cloud Imaging and Particle Size (CIPS) instrument saw this season’s first polar mesospheric clouds on May 28. Polar mesospheric clouds, also called noctilucent or “night shining” clouds, form at about 50 miles above Earth’s surface and can be seen when they reflect light after sunset. The Northern Hemisphere cloud season generally begins in late May and lasts until late August; in the Southern Hemisphere, the season goes from late November to late February.