edu.ucar.opensky::articles:26588 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T19:26:32.576970 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7dj5knt Spatially coordinated airborne data and complementary products for aerosol, gas, cloud, and meteorological studies: The NASA ACTIVATE dataset 2023-08-03T00:00:00Z publication https://n2t.org/ark:/85065/d7dj5knt https://doi.org/10.5194/essd-15-3419-2023 Sorooshian, A. author Alexandrov, M. D. author Bell, A. D. author Bennett, R. author Betito, G. author Burton, S. P. author Buzanowicz, M. E. author Cairns, B. author Chemyakin, E. V. author Chen, G. author Choi, Y. author Collister, B. L. author Cook, A. L. author Corral, A. F. author Crosbie, E. C. author van Diedenhoven, B. author DiGangi, J. P. author Diskin, G. S. author Dmitrovic, S. author Edwards, E. author Fenn, M. A. author Ferrare, R. A. author van Gilst, D. author Hair, J. W. author Harper, D. B. author Hilario, M. R. A. author Hostetler, C. A. author Jester, N. author Jones, M. author Kirschler, S. author Kleb, M. M. author Kusterer, J. M. author Leavor, S. author Lee, J. W. author Liu, H. author McCauley, K. author Moore, R. H. author Nied, J. author Notari, A. author Nowak, J. B. author Painemal, D. author Phillips, K. E. author Robinson, C. E. author Scarino, A. J. author Schlosser, J. S. author Seaman, S. T. author Seethala, C. author Shingler, T. J. author Shook, M. A. author Sinclair, K. A. author Smith Jr., W. L. author Spangenberg, D. A. author Stamnes, S. A. author Thornhill, K. L. author Voigt, C. author Vömel, Holger author Wasilewski, A. P. author Wang, H. author Winstead, E. L. author Zeider, K. author Zeng, X. author Zhang, B. author Ziemba, L. D. author Zuidema, P. author UCAR/NCAR - Library publisher The NASA Aerosol Cloud meTeorology Interactions oVer the western ATlantic Experiment (ACTIVATE) produced a unique dataset for research into aerosol-cloud-meteorology interactions, with applications extending from process-based studies to multi-scale model intercomparison and improvement as well as to remote-sensing algorithm assessments and advancements. ACTIVATE used two NASA Langley Research Center aircraft, a HU-25 Falcon and King Air, to conduct systematic and spatially coordinated flights over the northwest Atlantic Ocean, resulting in 162 joint flights and 17 other single-aircraft flights between 2020 and 2022 across all seasons. Data cover 574 and 592 cumulative flights hours for the HU-25 Falcon and King Air, respectively. The HU-25 Falcon conducted profiling at different level legs below, in, and just above boundary layer clouds (< 3 km) and obtained in situ measurements of trace gases, aerosol particles, clouds, and atmospheric state parameters. Under cloud-free conditions, the HU-25 Falcon similarly conducted profiling at different level legs within and immediately above the boundary layer. The King Air (the high-flying aircraft) flew at approximately similar to 9 km and conducted remote sensing with a lidar and polarimeter while also launching dropsondes (785 in total). Collectively, simultaneous data from both aircraft help to characterize the same vertical column of the atmosphere. In addition to individual instrument files, data from the HU-25 Falcon aircraft are combined into "merge files" on the publicly available data archive that are created at different time resolutions of interest (e.g., 1, 5, 10, 15, 30, 60 s, or matching an individual data product's start and stop times). This paper describes the ACTIVATE flight strategy, instrument and complementary dataset products, data access and usage details, and data application notes. The data are publicly accessible through https://doi.org/10.5067/SUBORBITAL/ACTIVATE/DATA001 (ACTIVATE Science Team, 2020). 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 author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation