VOCALS Giant Nuclei Impactor (GNI) NaCl-equivalent Sea-Salt Size Distributions https://data.eol.ucar.edu/dataset/89.176 Summary This dataset contains Giant Nuclei Impactor (GNI) NaCl-equivalent Sea-Salt Size Distributions collected during the VOCALS (VAMOS Ocean-Cloud-Atmosphere-Land Study) campaign. Polycarbonate microscope slides were exposed in the free air stream outside the NSF/NCAR C-130 using the manual GNI stick. Giant sea-salt aerosol particles are efficiently captured onto the slides. The slides were subsequently stored in desiccated test tubes and transported to NCAR/EOL/RAF. The slides were analyzed in the NCAR/EOL/RAF GNI slide chamber, using a dual-optical microscope. Slides were inserted into a humidified chamber with a relative humidity of about 90%. The images were analyzed using an automated edge detection algorithm, and using spherical cap geometry to determine the solution drop volume. Subsequently, the equivalent dry NaCl equivalent radius was determined using the Kohler equation for concentrated solutions, specifically Pruppacher and Klett, 1978, eq. 6.26b, using a full chemical potential calculation. For a detailed description, see a manuscript in preparation by Jensen et al., available from the author. Identifiers * Local archive identifier: 89.176 * doi:10.5065/D6CF9NJ8 https://doi.org/10.5065/D6CF9NJ8 Versions 1.0 Citation Jensen, J. 2017. VOCALS Giant Nuclei Impactor (GNI) NaCl-equivalent Sea-Salt Size Distributions. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. https://doi.org/10.5065/D6CF9NJ8 Accessed 29 Mar 2024. Additional citation styles can be generated by entering the DOI at CrossCite (https://citation.crosscite.org/). Acknowledgement In addition to the citation reference and any other acknowledgements, please acknowledge NCAR/EOL in your publications with text such as: Data provided by NCAR/EOL under the sponsorship of the National Science Foundation. https://data.eol.ucar.edu/ Related projects * VOCALS: VAMOS Ocean-Cloud-Atmosphere-Land Study https://data.eol.ucar.edu/project/VOCALS Additional information * Spatial Type: textTable * Frequency: other * Language: English Categories * Chemistry Platforms * NSF/NCAR C-130 Instruments * Giant Nuclei Impactor - GNI GCMD Science Keywords * EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL PARTICLE PROPERTIES Related links * info: VOCALS Data Policy https://www.eol.ucar.edu/content/vocals-data-policy-draft * info: VOCALS Project Missions https://catalog.eol.ucar.edu/vocals/missions/missions.html * info: VOCALS Missions http://catalog.eol.ucar.edu/vocals/missions/missions.html * homepage: VOCALS Homepage https://www.eol.ucar.edu/field_projects/vocals Temporal coverage * Begin datetime: 2008-10-18 13:46:00 * End datetime: 2008-11-15 19:39:00 Spatial coverage * Maximum (North) Latitude: -15.00 * Minimum (South) Latitude: -30.00 * Minimum (West) Longitude: -90.00 * Maximum (East) Longitude: -70.00 Primary contact information * pointOfContact: EOL Data Support https://data.eol.ucar.edu/contact/show/1 Additional contact information * author: Jorgen Jensen https://data.eol.ucar.edu/contact/show/54 * pointOfContact (ProjectMember): Stuart Beaton https://data.eol.ucar.edu/contact/show/721 * pointOfContact (ProjectMember): Karl Schwenz https://data.eol.ucar.edu/contact/show/2242 Alternate metadata formats * DataCite: https://data.eol.ucar.edu/dataset/89.176?format=datacite * ISO/TC 211: https://data.eol.ucar.edu/dataset/89.176?format=isotc211