Identification

Title

ORCAS Giant Nuclei Impactor (GNI) NaCl-equivalent Sea-Salt Size Distributions

Alternative title(s)

490.028

Abstract

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.

Resource type

dataset

Resource locator

https://data.eol.ucar.edu//dataset/490.028

protocol: https

name: ORCAS Giant Nuclei Impactor (GNI) NaCl-equivalent Sea-Salt Size Distributions homepage

description: Dataset homepage

https://data.eol.ucar.edu/cgi-bin/codiac/eula/fgr_form/id=490.028

protocol: https

name: ORCAS Giant Nuclei Impactor (GNI) NaCl-equivalent Sea-Salt Size Distributions Data Order Form

description: Dataset order request form. Data files are made available via FTP.

function: order

Unique resource identifier

code

490.028

codeSpace

Dataset language

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

climatologyMeteorologyAtmosphere

Keywords

Keyword set

keyword value

dataset

originating controlled vocabulary

title

Resource Type

reference date

date type

revision

effective date

2014-10-16

Keyword set

keyword value

NSF/NCAR GV HIAPER

Keyword set

keyword value

Aircraft

Keyword set

keyword value

EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD CONDENSATION NUCLEI

EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL PARTICLE PROPERTIES

EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > PARTICLE SIZE DISTRIBUTION

EARTH SCIENCE > ATMOSPHERE > AEROSOLS > CLOUD CONDENSATION NUCLEI

originating controlled vocabulary

title

Global Change Master Directory (GCMD)

reference date

date type

revision

effective date

2018-02-27

Geographic location

West bounding longitude

-105.00000

East bounding longitude

-30.00000

North bounding latitude

-30.00000

South bounding latitude

-80.00000

Temporal reference

Temporal extent

Begin position

2016-02-05T00:00:00Z

End position

2016-02-29T23:59:59Z

Dataset reference date

date type

publication

effective date

2017-03-17T16:06:49Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

These data are restricted by a user agreement: https://data.eol.ucar.edu//file/download/52E24B6B171D7/ORCAS_Data_Fair_Use.html

Limitations on public access

none

Responsible organisations

Responsible party

contact position

EOL Data Support

organisation name

UCAR/NCAR - Earth Observing Laboratory

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

https://data.eol.ucar.edu/

name: homepage

responsible party role

pointOfContact

Responsible party

contact position

EOL Data Support

organisation name

UCAR/NCAR - Earth Observing Laboratory

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

https://data.eol.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

contact position

EOL Data Support

organisation name

UCAR/NCAR - Earth Observing Laboratory

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

https://data.eol.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata date

2024-02-07T22:43:13Z

Metadata language

eng; USA