part of has quality has member composed primarily of object aggregate ice mass water ice crystal cirrostratus cloud Cirrostratus A cloud which 1) occurs in the form of a smooth or fibrous veil, 2) is composed of few small ice crystals, 3) is located in the high level of the atmosphere (high étage). Add more PATO qualities once they have been added to PATO. Cirrostratus clouds totally or partly cover the sky and are always thin enough to show the disc of the local star. When well-illuminated by sunlight (excluding during sunrise and sunset) cirrostratus clouds appear transparent or whitish. Cirrostratus clouds generally produce halo phenomena; sometimes the veil of cirrostratus is so thin that a halo provides the only indication of its presence. Absence of any precipitation. Cs Hohe Schleierwolke Zirrostratus envoAtmo envoCloudAtlas water-based cloud high atmospheric level decreased size decreased amount