HVPS-3 Imagery -- png format https://data.eol.ucar.edu/dataset/638.030 Summary The HVPS-3 instrument, or High Volume Precipitation Spectrometer, is an open path optical array probe. Unlike the 2D-S, the HVPS has a single channel, which images cloud particles between about 150 microns - 19 mm in size, with 150 micron resolution, as they pass through the instrument sample volume. This imagery is used to calculate the concentration and cross-sectional area size distributions, and to estimate the mass size distribution of the observed cloud and precipitation particles. These variables are integrated across the size bins to obtain the total concentration, extinction, and estimated total water content over the observed size range, and is provided at a frequency of 1 Hz. The particle imagery can be utilized to infer cloud particle phase. This data does not cover the full size range of cloud particles, and should be analyzed in conjunction with complementary cloud probes, such as the CDP, 2D-S or 2DC, etc. This dataset contains HVPS-3 imagery in png format collected aboard the NCAR C-130 during the CAESAR project. The images have been combined into hour long tarfiles running from zero minutes zero seconds to 59 minutes 59 seconds after each hour. Note that the first and last tarfile for each flight will contain less than a full hour of imagery. Directory files returned with each order give the contents of each corresponding tar file. Identifiers * Local archive identifier: 638.030 Versions 0.1: default Citation Woods, S. 2024. HVPS-3 Imagery -- png format. Version 0.1 [PRELIMINARY]. UCAR/NCAR - Earth Observing Laboratory. https://data.eol.ucar.edu/dataset/638.030 Accessed 16 Jul 2024. If you plan to cite this dataset in a publication, please email us at: datahelp@eol.ucar.edu We may be able to provide an updated citation that includes a DOI. 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 * CAESAR: Cold Air Outbreak Experiment in the Sub-Arctic Region https://data.eol.ucar.edu/project/CAESAR Additional information * Spatial Type: raster * Frequency: < 1 second * Language: English Categories * Aircraft Platforms * NSF NCAR C-130 GCMD Science Keywords * EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD TYPES * EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES Documentation * pngpages_legend.png [8 MiB] https://data.eol.ucar.edu/file/download/5580B073A4D41/pngpages_legend.png Restrictions * authorization required * EULA: EULA.html [0 KiB] https://data.eol.ucar.edu/file/download/5580B073A4D37/EULA.html Related links * companion: 638.015: HVPS-3 -- ICARTT format https://data.eol.ucar.edu/dataset/638.015 * info: CAESAR Missions https://catalog.eol.ucar.edu/caesar/missions * info: CAESAR Data Policy https://www.eol.ucar.edu/node/30493 * homepage: CAESAR EOL Homepage https://www.eol.ucar.edu/field_projects/caesar Temporal coverage * Begin datetime: 2024-02-09 15:52:21 * End datetime: 2024-04-03 16:02:41 Spatial coverage * Maximum (North) Latitude: 82.00 * Minimum (South) Latitude: 66.00 * Minimum (West) Longitude: -14.00 * Maximum (East) Longitude: 24.00 Primary contact information * pointOfContact: UCAR/NCAR - Earth Observing Laboratory https://data.eol.ucar.edu/contact/show/3451 Additional contact information * author: Sarah Woods https://data.eol.ucar.edu/contact/show/3123 Alternate metadata formats * DataCite: https://data.eol.ucar.edu/dataset/638.030?format=datacite * ISO/TC 211: https://data.eol.ucar.edu/dataset/638.030?format=isotc211