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Counterflow Virtual Impactor (CVI) [Twohy]



The Counterflow Virtual Impactor (CVI) dataset is one of several aircraft data sets collected on the NSF/NCAR Research Aviation Facility (RAF) C-130Q Hercules aircraft (Tail Number N130AR) as part of the Ice in Clouds Experiment -L (ICE-L). The counterflow virtual impactor (CVI) separates droplets or ice crystals from the ambient aerosol and evaporates the condensed water, producing cloud droplet residual particles and water vapor. Cloud droplet number (as number of residual particles after evaporation) and condensed water content measurements were taken using the CVI onboard the NSF/NCAR C-130 from Nov 7-Dev 16, 2007. Data are in NASA Ames format. UPDATED 2011-02-01

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Additional information

Data Quality final
  • 1.0 (2011-02-01)
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Related projects
Spatial Type point
Frequency 1 second
Language English
GCMD Science Keywords Expand keywords
Related links

Temporal coverage

Begin datetime 2007-11-07 00:00:00
End datetime 2007-12-16 23:59:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 45.00, Minimum (South) Latitude: 37.00
Minimum (West) Longitude: -110.00, Maximum (East) Longitude: -102.00

Primary point of contact information

EOL Data Support <>

Additional contact information


UCAR/NCAR - Earth Observing Laboratory, Twohy, C. 2011. Counterflow Virtual Impactor (CVI). Version 1.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 21 Jun 2024.

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