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VOCALS: Giant Cloud Condensation Nuclei (CCN) Impactor Raw Data

Summary

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.

Data access

ORDER data to made available for download

Additional information

Identifier	DOI: https://doi.org/10.26023/ZJVK-ZMF2-VZ0V
Data Quality	final
Versions	1.0 (2019-06-25)
Subscribe	Subscribe to receive email when new or updated data is available.
Related projects	VOCALS: VAMOS Ocean-Cloud-Atmosphere-Land Study
Frequency	continuous
Language	English
Categories	Aircraft
Platforms	NSF NCAR C-130
Instruments	Giant Nuclei Impactor - GNI
GCMD Science Keywords	AEROSOL PARTICLE PROPERTIES CLOUD CONDENSATION NUCLEI CLOUD CONDENSATION NUCLEI Expand keywords
Documentation	out_record.h [29 KiB] out_rec_struct.h [3 KiB]
Related links	companion: 89.175: Giant Cloud Condensation Nuclei (CCN) Impactor Data info: VOCALS Data Policy homepage: VOCALS Homepage info: VOCALS Missions info: VOCALS Project Missions

Temporal coverage

Begin datetime	2008-10-01 00:00:00
End datetime	2008-11-30 23:59:00

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: -15.00, Minimum (South) Latitude: -30.00
Minimum (West) Longitude: -90.00, Maximum (East) Longitude: -70.00

Primary point of contact information

EOL Data Support <datahelp@eol.ucar.edu>

Additional contact information

author: EOL Data Support <datahelp@eol.ucar.edu>

Citation

UCAR/NCAR - Earth Observing Laboratory. 2019. VOCALS: Giant Cloud Condensation Nuclei (CCN) Impactor Raw Data. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. https://doi.org/10.26023/ZJVK-ZMF2-VZ0V. Accessed 18 Apr 2025.

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