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SOCRATES CCN measurements


This data set contains Cloud Concentration Nuclei (CCN) data from the two miniaturized CCN counters (mCCNc) that were operated by the Scripps Institution of Oceanography on-board the NSF/NCAR GV HIAPER aircraft during SOCRATES. They provide measurements of the horizontal and vertical spatial variability of CCN number concentrations, CCN spectra, and aerosol hydroscopicity. One mCCNc was at a fixed supersaturation for high spatial resolution and the second was operated at a range of supersaturation values to retrieve the CCN spectra. These data are in ICARTT format.

Data access

  • ORDER data for delivery by FTP

Additional information

Data Quality final
  • 0.1 (2018-03-09)
  • 1.0 (2018-05-02)
  • 1.1 (2018-05-04):

    This version fixes a bug that impacted the displayed date for the data when the original netcdf file started before 00 UTC, but the CCNC was turned on after 00 UTC.

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Frequency 10 second
Language English
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Temporal coverage

Begin datetime 2018-01-15 22:54:00
End datetime 2018-02-24 23:53:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: -42.50, Minimum (South) Latitude: -62.10
Minimum (West) Longitude: 133.80, Maximum (East) Longitude: 163.10

Primary point of contact information

EOL Data Support <>

Additional contact information


Sanchez, K., Roberts, G. 2018. SOCRATES CCN measurements. Version 1.1. UCAR/NCAR - Earth Observing Laboratory. Accessed 23 Apr 2024.

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