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The 2DS captures two-dimensional images of particles passing through the sample volume where laser beams overlap. Two 128-photodiode linear arrays work independently as high-speed and high-resolution optical imaging probes. The region where the beams overlap uniquely defines the depth-of-field (and thus the sample volume) for small particles. The 2DS measures particles from 10 to 1280 microns at a 10 micron resolution.

Note: For RF05, the date was incorrectly set to November 4, 2016 when the data were recorded. The filename has been changed to reflect the correct date as August 12, 2016, but the dates inside the file remain incorrect. 

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Additional information

Data Quality preliminary
  • 0.1 (2016-09-20)
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Related projects
Spatial Type raster
Frequency continuous
Language English
GCMD Science Keywords Expand keywords
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Temporal coverage

Begin datetime 2016-08-09 15:52:11
End datetime 2016-08-17 05:59:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 47.50, Minimum (South) Latitude: 39.50
Minimum (West) Longitude: -126.00, Maximum (East) Longitude: -103.00

Primary point of contact information

EOL Data Support <>


UCAR/NCAR - Earth Observing Laboratory. 2016. RAL Raw 2DS. Version 0.1 [PRELIMINARY]. UCAR/NCAR - Earth Observing Laboratory. Accessed 19 Jun 2024.

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Ancillary information

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