Holographic Detector for Clouds (HOLODEC 2) - RAW (.seq) data format [EOL/RAF]

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.

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Questions? Email Resource Support Contact:

  • EOL Data Support
    datahelp@eol.ucar.edu

Temporal Range

  • Begin:  2015-06-26T20:00:54Z
    End:  2015-08-12T22:04:09Z

Keywords

Resource Type dataset
Temporal Range Begin 2015-06-26T20:00:54Z
Temporal Range End 2015-08-12T22:04:09Z
Temporal Resolution N/A
Bounding Box North Lat 50.00000
Bounding Box South Lat 15.00000
Bounding Box West Long -160.00000
Bounding Box East Long -120.00000
Spatial Representation N/A
Spatial Resolution N/A
Related Links

Documentation #1 : CSET_log_RF16.txt

487.034 : is a companion to dataset 487.001

487.027 : is a companion to dataset 487.001
Additional Information N/A
Resource Format HOLODEC Sequence
XML: Extensible Markup Language (application/xml)
Standardized Resource Format XML
OTHER
Asset Size 14344580 MB
Legal Constraints

none
Access Constraints none
Software Implementation Language N/A

Resource Support Name EOL Data Support
Resource Support Email datahelp@eol.ucar.edu
Resource Support Organization N/A
Distributor N/A
Metadata Contact Name EOL Data Support
Metadata Contact Email datahelp@eol.ucar.edu
Metadata Contact Organization N/A

Author N/A
Publisher N/A
Publication Date 2021-08-26T19:03:08
Digital Object Identifier (DOI) https://doi.org/10.26023/5V8H-00AM-9Q06
Alternate Identifier 487.001
Resource Version 1.0
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2025-10-07T21:45:49Z
Metadata Record Identifier edu.ucar.eol::487.001
Metadata Language eng; USA
Suggested Citation (2021). Holographic Detector for Clouds (HOLODEC 2) - RAW (.seq) data format [EOL/RAF]. 1.0. https://doi.org/10.26023/5V8H-00AM-9Q06. Accessed 01 November 2025.

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