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Holographic Detector for Clouds (HOLODEC 2) [EOL/RAF]


This dataset contains measurements of cloud particle size distributions collected during the HEFT10 project using an airborne holographic instrument (HOLODEC 2) mounted on the NSF/NCAR Gulfstream V (N677F). The data are recorded in a raw video stream that is processed using a MATLAB script to a series of lossless 8-bit grayscale .png files with the filenames serving as the time stamps. Each image file is about 11 or 12 MB from the 4872x3248 8-bit pixels or compressed to about 2/3 of the raw. Images are combined into 1-minute log tarfiles. To help analyze the data, movies (800x600, mpeg4) of each image series are also available.

Data access

  • ORDER data for delivery by FTP

Additional information

Data Quality final
  • 1.0 (2011-05-17)
Related projects
Spatial Type multiple
Frequency 1 second
Language English
Related links

Temporal coverage

Begin datetime 2010-01-23 00:00:00
End datetime 2010-01-30 23:59:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 41.00, Minimum (South) Latitude: 15.00
Minimum (West) Longitude: -160.00, Maximum (East) Longitude: -103.00

Primary point of contact information

EOL Data Support <>

Additional contact information


Example citation following ESIP guidelines:

UCAR/NCAR - Earth Observing Laboratory. 2011. Holographic Detector for Clouds (HOLODEC 2). Version 1.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 22 Jan 2020.

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Ancillary information

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