Letter to the Editor: A strange cloud in the Arctic summer stratosphere 1998 above Esrange (68°N), Sweden

• Published in: Annales Geophysicae
• Main Authors: J. Siebert, C. Timmis, G. Vaughan, K. H. Fricke
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2000
• Subjects: Science; Q; Physics; QC1-999; Geophysics. Cosmic physics; QC801-809; Arctic; Canada; Esrange; Korovin; Aleutian Islands
• Online Access: https://doi.org/10.1007/s00585-000-0505-0; https://doaj.org/article/748ccbdfa23e476298be2b0e98ed7751

When the University of Bonn lidar on the Esrange (68°N, 21°E), Sweden, was switched on in the evening of July 18, 1998, a geometrically and optically thin cloud layer was present near 14 km altitude or 400 K potential temperature, where it persisted for two hours. The tropopause altitude was 4 km be...