TY - JOUR A1 - Li, Y. A1 - Mahnke, C. A1 - Rohs, S. A1 - Bundke, U. A1 - Spelten, N. A1 - Dekoutsidis, G. A1 - Groß, S. A1 - Voigt, C. A1 - Schumann, U. A1 - Petzold, A. A1 - Krämer, M. T1 - Upper tropospheric slightly ice-subsaturated regions: Frequency of occurrence and statistical evidence for the appearance of contrail cirrus JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 2022 SP - 1 EP - 32 Y1 - 2022/09/08 PB - Copernicus Publications SN - 1680-7375 UR - https://acp.copernicus.org/preprints/acp-2022-632/ L1 - https://acp.copernicus.org/preprints/acp-2022-632/acp-2022-632.pdf DO - 10.5194/acp-2022-632 ER -