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ACE-1: Aircraft C-130 DRI CCN and CN Data (Aircraft Soundings - Cloud Free) (Hudson)


Cloud Condensation Nuclei (CCN) and Condensation Nuclei (CN) measurements obtained by the Desert Research Institute (DRI - Hudson) from the NCAR C-130 during ACE-1. Concentrations are per cubic centimeter normalized to sea-level pressure. The data presented here are ambient, unprocessed measurements. All other measurements that were obtained during the project have been removed from these files. These data were obtained during aircraft soundings. A companion dataset is available that contains both in-cloud and cloud free data for these soundings.

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Related projects
Spatial Type point
Frequency no set schedule
Language English
GCMD Science Keywords Expand keywords

Temporal coverage

Begin datetime 1995-11-17 00:00:00
End datetime 1995-12-12 23:59:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 80.00, Minimum (South) Latitude: -75.00
Minimum (West) Longitude: 130.00, Maximum (East) Longitude: -104.00

Primary point of contact information

James G. Hudson <>

Additional contact information


Example citation following ESIP guidelines:

Desert Research Institute. 2006. ACE-1: Aircraft C-130 DRI CCN and CN Data (Aircraft Soundings - Cloud Free). Version 1.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 17 Oct 2021.

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Ancillary information

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