edu.ucar.opensky::articles:27104 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T18:53:55.404034 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7k078f6 Characteristics of generating cells in wintertime orographic clouds 2024-03-01T00:00:00Z publication https://n2t.org/ark:/85065/d7k078f6 https://doi.org/10.1175/JAS-D-23-0029.1 Tessendorf, Sarah A. author Ikeda, Kyoko author Rasmussen, Roy M. author French, J. author Rauber, R. M. author Korolev, A. author Xue, L. author Blestrud, D. R. author Dawson, N. author Meadows, M. author Kunkel, M. L. author Parkinson, S. author UCAR/NCAR - Library publisher During the Seeded and Natural Orographic Wintertime clouds: the Idaho Experiment (SNOWIE) field campaign, cloud -top generating cells were frequently observed in the very high -resolution W -band airborne cloud radar data. This study examines multiple flight segments from three SNOWIE cases that exhibited cloud -top generating cells structures, focusing on the in situ measurements inside and outside these cells to characterize the microphysics of these cells. The observed generating cells in these three cases occurred in cloud tops of -15(degrees) to -30(degrees)C, with and without overlying cloud layers, but always with shallow layers of atmospheric instability observed at cloud top. The results also indicate that liquid water content, vertical velocity, and drizzle and ice crystal concentrations are greater inside the generating cells compared to the adjacent portions of the cloud. The generating cells were predominantly <500 m in horizontal width and frequently exhibited drizzle drops coexisting with ice. The particle imagery indicates that ice particle habits included plates, columns, and rimed and irregular crystals, likely formed via primary ice nucleation mechanisms. Understanding the sources of natural ice formation is important to understanding precipitation formation in winter orographic clouds, and is especially relevant for clouds that may be targeted for glaciogenic cloud seeding as well as to improve model representation of these clouds. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2024 American Meteorological Society (AMS). None eng geoscientificInformation