Holographic Detector for Clouds (HOLODEC 2) - RAW (.seq) data format [EOL/RAF] https://data.eol.ucar.edu/dataset/487.001 Summary This dataset contains measurements of cloud particle size distributions collected during the CSET (Cloud System Evolution in the Trades) project using an airborne holographic instrument (HOLODEC 2) mounted on the NSF/NCAR GV HIAPER (Gulfstream-V High-performance Instrumented Airborne Platform for Environmental Research) (N677F). The HOLODEC-II is a second-generation version of a holographic detecter designed to determine the size, two-dimensional shape, and three-dimensional position of hydrometeors via digital in-line holography. Advantages vs other hydrometeor detectors are that the sample volume is not size dependent, relative positions of hydrometeors in the sample volume can be determined in three dimensions, and effects produced by shattering from the aperture edges can be identified and eliminated. Automated analysis programs have been develop to process the holograms collected and produce size distributions. HOLODEC-II has sufficient resolution to determine the sizes and locations of cloud droplets as well as ice crystals. Identifiers * Local archive identifier: 487.001 * doi:10.26023/5V8H-00AM-9Q06 https://doi.org/10.26023/5V8H-00AM-9Q06 Versions 0.1 1.0 Citation UCAR/NCAR - Earth Observing Laboratory. 2021. Holographic Detector for Clouds (HOLODEC 2) - RAW (.seq) data format. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. https://doi.org/10.26023/5V8H-00AM-9Q06 Accessed 28 Mar 2024. Additional citation styles can be generated by entering the DOI at CrossCite (https://citation.crosscite.org/). Acknowledgement In addition to the citation reference and any other acknowledgements, please acknowledge NCAR/EOL in your publications with text such as: Data provided by NCAR/EOL under the sponsorship of the National Science Foundation. https://data.eol.ucar.edu/ Related projects * CSET: Cloud System Evolution in the Trades https://data.eol.ucar.edu/project/CSET Additional information * Spatial Type: raster * Frequency: 1 second * Language: English Categories * Aircraft Platforms * NSF/NCAR GV HIAPER Instruments * HOLODEC - Holographic Detector for Clouds GCMD Science Keywords * EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > PARTICLE SIZE DISTRIBUTION * EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > HYDROMETEORS * EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD DROPLET DISTRIBUTION Documentation * CSET_log_RF16.txt [1 KiB] https://data.eol.ucar.edu/file/download/5243AB32A27B2/CSET_log_RF16.txt Related links * companion: 487.034: Holographic Detector for Clouds (HOLODEC) Reconstructed Data (_hist.mat files) (S. Glienke (MTU)) https://data.eol.ucar.edu/dataset/487.034 * companion: 487.027: Holographic Detector for Clouds (HOLODEC) particle-by-particle data [Shaw,R.,S. Glienke (MTU)] https://data.eol.ucar.edu/dataset/487.027 * info: CSET Data Policy https://www.eol.ucar.edu/content/cset-data-policy * info: CSET Missions https://catalog.eol.ucar.edu/cset/tools/missions * homepage: CSET Home Page https://www.eol.ucar.edu/field_projects/cset * info: Holographic Detector for Clouds https://www.eol.ucar.edu/instruments/holographic-detector-clouds Temporal coverage * Begin datetime: 2015-06-26 20:00:54 * End datetime: 2015-08-12 22:04:09 Spatial coverage * Maximum (North) Latitude: 50.00 * Minimum (South) Latitude: 15.00 * Minimum (West) Longitude: -160.00 * Maximum (East) Longitude: -120.00 Primary contact information * pointOfContact: EOL Data Support https://data.eol.ucar.edu/contact/show/1 Alternate metadata formats * DataCite: https://data.eol.ucar.edu/dataset/487.001?format=datacite * ISO/TC 211: https://data.eol.ucar.edu/dataset/487.001?format=isotc211