Identification

Title

Fast 2D-S Data and Imagery

Alternative title(s)

629.007

Abstract

A 2D-S instrument is a cloud particle probe that contains two orthogonal open path optical array probes, which image cloud particles between about 10 microns - 2 mm in size as they pass through the instrument sample volume. This imagery is used to calculate the concentration and cross-sectional area size distributions, and to estimate the mass size distribution of the observed cloud particles. These variables are integrated across the size bins to obtain the total concentration, extinction, and estimated total water content over the observed size range, and is provided at a frequency of 1 Hz. The particle imagery can be utilized to infer cloud particle phase. This data does not cover the full size range of cloud particles, and should be analyzed in conjunction with complementary cloud probes, such as the CDP, HVPS, etc. This dataset contains Fast 2D-S data and imagery collected aboard the NCAR GV during the CGWaveS project.

Resource type

dataset

Resource locator

https://data.eol.ucar.edu/dataset/629.007

protocol: https

description: Dataset homepage

https://data.eol.ucar.edu/cgi-bin/codiac_pw/eula/fgr_form/id=629.007

protocol: https

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

function: order

Unique resource identifier

code

629.007

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 DROPLET CONCENTRATION/SIZE

EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > HYDROMETEORS

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

EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD DROPLET DISTRIBUTION

EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD LIQUID WATER/ICE

originating controlled vocabulary

title

Global Change Master Directory (GCMD)

reference date

date type

revision

effective date

2018-02-27

Geographic location

West bounding longitude

-111.00000

East bounding longitude

-82.30000

North bounding latitude

48.30000

South bounding latitude

30.20000

Temporal reference

Temporal extent

Begin position

2025-05-21T00:00:00Z

End position

2025-06-13T23:59:59Z

Dataset reference date

date type

publication

effective date

2025-12-15T05:02:49Z

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/55F4017D746FE/EULA.html

Limitations on public access

Access to these data requires a password.

Responsible organisations

Responsible party

contact position

EOL Data Support

organisation name

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

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

responsible party role

pointOfContact

Responsible party

contact position

EOL Data Support

organisation name

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

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

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

contact position

EOL Data Support

organisation name

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

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

responsible party role

pointOfContact

Metadata date

2026-01-12T22:50:58Z

Metadata language

eng; USA