10.5065/D69885FD
UCAR/NCAR - Earth Observing Laboratory
Jensen, J.
https://orcid.org/0000-0002-2504-1277
NCAR/EOL
ORCAS Giant Nuclei Impactor (GNI) NaCl-equivalent Sea-Salt Size Distributions. Version 1.0
UCAR/NCAR - Earth Observing Laboratory
2017
scientific data
Aircraft
NSF/NCAR GV HIAPER
Aircraft > > NSF/NCAR GV HIAPER > NSF/NCAR Gulfstream GV Aircraft > 879d697c-381f-45df-a48d-2d9095bc5c54
Giant Nuclei Impactor - GNI
In Situ/Laboratory Instruments Chemical Meters/Analyzers > > > GNI > Giant Nuclei Impactor > ec165cc6-324d-4be1-8ace-48a660a1f900
EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > PARTICLE SIZE DISTRIBUTION
EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL PARTICLE PROPERTIES
EARTH SCIENCE > ATMOSPHERE > AEROSOLS > CLOUD CONDENSATION NUCLEI
EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD CONDENSATION NUCLEI
ORCAS
The O2/N2 Ratio and CO2 Airborne Southern Ocean (ORCAS) Study
University Corporation For Atmospheric Research (UCAR):National Center for Atmospheric Research (NCAR):Earth Observing Laboratory (EOL):Data Managment and Services (DMS)
UCAR/NCAR - Earth Observing Laboratory, datahelp@eol.ucar.edu
Jensen, Jorgen, jbj@ucar.edu
https://orcid.org/0000-0002-2504-1277
NCAR/EOL
Jensen, Jorgen, jbj@ucar.edu
https://orcid.org/0000-0002-2504-1277
NCAR/EOL
2016-02-05T00:00:00Z/2016-02-29T23:59:59Z
en
490.028
https://data.eol.ucar.edu/file/download/52E24B6B171D7/ORCAS_Data_Fair_Use.html
https://data.eol.ucar.edu/file/download/52E24B336C60C/ORCAS_GNI_readme.txt
https://www.eol.ucar.edu/field_projects/orcas
https://www.eol.ucar.edu/content/orcas-data-policy
http://catalog.eol.ucar.edu/orcas/tools/missions
10.5065/D6DR2SJP
18 data files
2 ancillary/documentation files
144 KiB
Tabular/Columnar ASCII
1.0
These data are available to be used subject to the University Corporation for Atmospheric Research ("UCAR") terms and conditions.
These data are restricted by a user agreement.
This dataset contains Giant Nuclei Impactor (GNI) NaCl-equivalent Sea-Salt Size Distributions collected by the NSF/NCAR GV HIAPER (Gulfstream-V High-performance Instrumented Airborne Platform for Environmental Research) aircraft (Tail Number N677F) during the ORCAS (O2/N2 Ratio and CO2 Airborne Southern Ocean Study) campaign. The size distributions are given as spherical dry radius in 97 bins each of 0.2 μm width starting from 0.8 μm (center of bin) and extending to 20 μm (center of bin). The data were obtained by exposing polycarbonate in the free air streak outside the NSF/NCAR GV aircraft. Slides are available for ORCAS research flights RF08, RF15 and RF17. 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 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 (Sodium Chloride) equivalent radius was determined using the Kohler equation for concentrated solutions. The size distributions are intended to be used as aerosol size distributions (Giant Cloud Condensation Nuclei, GCCN) for cloud modeling studies, as aerosol size distributions for atmospheric radiation studies, and as aerosol size distributions for atmospheric chemistry studies.
-105.00000
-30.00000
-80.00000
-30.00000