Giant Cloud Condensation Nuclei (CCN) Impactor Raw Data

The NCAR/EOL/RAF Giant Cloud Condensation Nuclei Impactor (GNI) samples giant aerosol particles. Slides were exposed in the free air stream onto uncoated polycarbonate microscope slides. After exposure in the free air stream, the slides were analyzed in the NCAR/EOL/RAF GNI slide chamber, using a dual-optical microscope. Each slide was inserted into the humidified chamber with a relative humidity of 89.8%. Each file (uncompressed) contains 350 images, but one needs to write the data out as a png file (or similar) in order to see the images. Data are archived by date and are stored as .tar.gz files. For a detailed description, see two manuscripts in preparation by Jensen et al., available from the author.

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Temporal Range

  • Begin:  2008-10-01T00:00:00Z
    End:  2008-11-30T23:59:00Z

Keywords

Resource Type dataset
Temporal Range Begin 2008-10-01T00:00:00Z
Temporal Range End 2008-11-30T23:59:00Z
Temporal Resolution N/A
Bounding Box North Lat -15.00000
Bounding Box South Lat -30.00000
Bounding Box West Long -90.00000
Bounding Box East Long -70.00000
Spatial Representation N/A
Spatial Resolution N/A
Related Links

Documentation #1 : out_record.h

Documentation #2 : out_rec_struct.h

89.175 : is a companion to dataset 89.177
Additional Information N/A
Resource Format TAR/GNU Zip (.tar.gz/.tgz) (application/x-gzip)
Standardized Resource Format Archive
Asset Size 161396 MB
Legal Constraints

none
Access Constraints none
Software Implementation Language N/A

Resource Support Name EOL Data Support
Resource Support Email datahelp@eol.ucar.edu
Resource Support Organization N/A
Distributor N/A
Metadata Contact Name EOL Data Support
Metadata Contact Email datahelp@eol.ucar.edu
Metadata Contact Organization N/A

Author N/A
Publisher N/A
Publication Date 2019-06-25T20:09:49
Digital Object Identifier (DOI) https://doi.org/10.26023/ZJVK-ZMF2-VZ0V
Alternate Identifier 89.177
Resource Version 1.0
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2025-10-07T21:45:20Z
Metadata Record Identifier edu.ucar.eol::89.177
Metadata Language eng; USA
Suggested Citation (2019). Giant Cloud Condensation Nuclei (CCN) Impactor Raw Data. 1.0. https://doi.org/10.26023/ZJVK-ZMF2-VZ0V. Accessed 29 October 2025.

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