Fast 2D-S Data and Imagery

A 2D-S instrument is a cloud particle probe that contains two orthogonal open path optical array probes, which image cloud particles between about 10 microns - 2 mm in size 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 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, HVPS, etc. This dataset contains Fast 2D-S data and imagery collected aboard the NCAR GV during the CGWaveS project.

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  • EOL Data Support
    datahelp@eol.ucar.edu
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Temporal Range

  • Begin:  2025-05-21T00:00:00Z
    End:  2025-06-13T23:59:59Z

Keywords

Resource Type dataset
Temporal Range Begin 2025-05-21T00:00:00Z
Temporal Range End 2025-06-13T23:59:59Z
Temporal Resolution N/A
Bounding Box North Lat 48.30000
Bounding Box South Lat 30.20000
Bounding Box West Long -111.00000
Bounding Box East Long -82.30000
Spatial Representation grid
Spatial Resolution N/A
Related Links

Documentation #1 : README_CGWaveS_F2DS.pdf
Additional Information N/A
Resource Format NCAR/RAF Aircraft Format (netCDF) (application/x-netcdf)
ZIP: PKZIP (application/zip)
Standardized Resource Format Archive
NetCDF
Asset Size 726 MB
Legal Constraints

These data are restricted by a user agreement: https://data.eol.ucar.edu/file/download/55F4017D746FE/EULA.html
Access Constraints Access to these data requires a password.
Software Implementation Language N/A

Resource Support Name EOL Data Support
Resource Support Email datahelp@eol.ucar.edu
Resource Support Organization NSF NCAR Earth Observing Laboratory
Distributor NSF NCAR Earth Observing Laboratory
Metadata Contact Name EOL Data Support
Metadata Contact Email datahelp@eol.ucar.edu
Metadata Contact Organization NSF NCAR Earth Observing Laboratory

Author Sarah Woods ORCID icon
Publisher NSF NCAR Earth Observing Laboratory
Publication Date 2025-12-15T05:02:49
Digital Object Identifier (DOI) https://doi.org/10.26023/18VX-A3GC-PC0A
Alternate Identifier 629.007
Resource Version 1.0
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2026-01-12T22:50:58Z
Metadata Record Identifier edu.ucar.eol::629.007
Metadata Language eng; USA
Suggested Citation Sarah Woods. (2025). Fast 2D-S Data and Imagery. 1.0. NSF NCAR Earth Observing Laboratory. https://doi.org/10.26023/18VX-A3GC-PC0A. Accessed 22 January 2026.

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