Celer - Nacreous Clouds (Remastered) (2018)

Polar stratospheric clouds (PSCs), also known as "nacreous clouds", are found in the winter polar stratosphere at altitudes of 15,000–25,000 metres (50,000–80,000 ft). Due to their high altitude and the curvature of the surface of the Earth, these clouds will receive sunlight from below the horizon and reflect it to the ground, shining brightly well before dawn or after dusk. PSCs form at very low temperatures, below −78 °C. These temperatures can occur in the lower stratosphere in polar winter. In the Antarctic, temperatures below −88 °C frequently cause type II PSCs. Such low temperatures are rarer in the Arctic. Apart from arctic regions, PSCs have also been known to be seen in Scandinavia, Iceland, Alaska and Northern Canada. Sometimes, however, they occur as far south as England.

"Nacreous Clouds", created using tape loops and digital processing, is Celer's third album to be released on a label, and was originally issued in 2008 on and/OAR in a CD edition of 300 copies. To coincide with the 10-year release anniversary, it has been remastered by Stephan Mathieu, and is presented with new artwork and packaging, reissued on Two Acorns.