Skip to data content Skip to data search

Particle Size Distribution (PSD) Data


This data set consists of data collected from two instruments on the NASA DC-8 aircraft from the High Ice Water Content (HIWC) Radar study that took place in Fort Lauderdale, Florida; Palmdale, California; and Kona, Hawaii. These data are from the DMT Precipitation Imaging Probe (PIP), and the SPEC Two-Dimensional Stereo probe (2D-S). Both instruments are two-dimensional optical array probes which record images of particles that travel through their sampling area. The recorded images are then analyzed to produce particle size distributions from 50 microns to 3 centimeters in diameter. The data files consist of data in txt files, and images in png format. The images are contained in tar files by flight.

Data access

  • ORDER data for delivery by FTP
    • authorization required

Additional information

Data Quality final
  • 1.0 (2018-11-09)
  • 2.0 (2019-04-17):

    Received final version of the data.

(Only the current version of the data is available to order. If you have questions about a prior version, please email us.)
Subscribe Subscribe to receive email when new or updated data is available.
Related projects
Spatial Type point
Frequency 1 second
Language English
GCMD Science Keywords Expand keywords
  • authorization required

Temporal coverage

Begin datetime 2018-08-02 00:00:00
End datetime 2018-08-20 23:59:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 40.00, Minimum (South) Latitude: 10.00
Minimum (West) Longitude: -170.00, Maximum (East) Longitude: -45.00

Primary point of contact information

EOL Data Support <>

Additional contact information


Example citation following ESIP guidelines:

Bansemer, A. 2019. Particle Size Distribution (PSD) Data. Version 2.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 24 Feb 2020.

Today's date is shown: please replace with the date of your most recent access.

Additional citation styles

Ancillary information

Metadata download

Note that your browser may not display the above metadata links, but automatically save them as files in a folder such as "Downloads"