edu.ucar.opensky::articles:22371 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:42:19.116207 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7qj7mbr https://doi.org/10.5065/D6SQ8XFB https Related CreativeWork #1 EOL Field Catalog Cloud System Evolution in the Trades (CSET): Following the evolution of boundary layer cloud systems with the NSF–NCAR GV 2019-01-01T00:00:00Z publication https://n2t.org/ark:/85065/d7qj7mbr https://doi.org/10.1175/BAMS-D-17-0180.1 Albrecht, B. author Ghate, V. author Mohrmann, J. author Wood, R. author Zuidema, P. author BRETHERTON, C. author Schwartz, C. author Eloranta, E. author Glienke, S. author Donaher, S. author Sarkar, M. author McGibbon, J. author Nugent, A. D. author Shaw, R. A. author Fugal, J. author Minnis, P. author Paliknoda, R. author Lussier, Louis author Jensen, Jørgen B. author Vivekanandan, Jothiram author Ellis, Scott M. author Tsai, Pei-Sang author Rilling, Robert A. author Haggerty, Julie A. author Campos, Teresa author Stell, Meghan author Reeves, John Michael author Beaton, Stuart author Allison, John J. author Stossmeister, Gregory J. author Hall, Samuel R. author Schmidt, S. author UCAR/NCAR - Library publisher The Cloud System Evolution in the Trades (CSET) study was designed to describe and explain the evolution of the boundary layer aerosol, cloud, and thermodynamic structures along trajectories within the North Pacific trade winds. The study centered on seven round trips of the National Science Foundation–National Center for Atmospheric Research (NSF–NCAR) Gulfstream V (GV) between Sacramento, California, and Kona, Hawaii, between 7 July and 9 August 2015. The CSET observing strategy was to sample aerosol, cloud, and boundary layer properties upwind from the transition zone over the North Pacific and to resample these areas two days later. Global Forecast System forecast trajectories were used to plan the outbound flight to Hawaii with updated forecast trajectories setting the return flight plan two days later. Two key elements of the CSET observing system were the newly developed High-Performance Instrumented Airborne Platform for Environmental Research (HIAPER) Cloud Radar (HCR) and the high-spectral-resolution lidar (HSRL). Together they provided unprecedented characterizations of aerosol, cloud, and precipitation structures that were combined with in situ measurements of aerosol, cloud, precipitation, and turbulence properties. The cloud systems sampled included solid stratocumulus infused with smoke from Canadian wildfires, mesoscale cloud–precipitation complexes, and patches of shallow cumuli in very clean environments. Ultraclean layers observed frequently near the top of the boundary layer were often associated with shallow, optically thin, layered veil clouds. The extensive aerosol, cloud, drizzle, and boundary layer sampling made over open areas of the northeast Pacific along 2-day trajectories during CSET will be an invaluable resource for modeling studies of boundary layer cloud system evolution and its governing physical processes. 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 2019 American Meteorological Society. None eng geoscientificInformation