Identification

Title

PM2.5 Equivalent Black Carbon Measurements from ASCENT

Alternative title(s)

d389501

Abstract

In this dataset, data from a 7-wavelength aethalometer (AE33, Aerosol Magee Scientific) are reported. The instrument reports its measurements at 1 minute intervals. Light attenuation through the filter at each wavelength is converted to equivalent black carbon concentration, assuming a corresponding mass absorption cross-section.

Resource type

dataset

Resource locator

https://gdex.ucar.edu/datasets/d389501/

protocol: https

name: Dataset Description

description: Related Link

function: information

https://gdex.ucar.edu/datasets/d389501/dataaccess/

protocol: https

name: Data Access

description: Related Link

function: download

Unique resource identifier

code

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

reference date

date type

revision

effective date

2021-03-30

Keyword set

keyword value

ASCENT > Atmospheric Science and Chemistry mEasurement NeTwork

originating controlled vocabulary

title

reference date

date type

revision

effective date

2026-10-14

Keyword set

keyword value

EARTH SCIENCE > ATMOSPHERE > AEROSOLS > BLACK CARBON

originating controlled vocabulary

title

reference date

date type

revision

effective date

2026-10-14

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

2022-10-07

End position

2026-09-30

Dataset reference date

date type

publication

effective date

2025-09-24

Frequency of update

notPlanned

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

ASCENT Data Policy: The ASCENT (Atmospheric Science and Chemistry mEasurement NeTwork) data are freely available to the public and the scientific community. Since these data are the product of extensive and continuous effort by the team to maintain ASCENT instrumentation and collect and process high-quality data, we expect data users to ensure that the responsible ASCENT team members receive fair credit for their work and are offered the opportunity to contribute to the data analysis and co-author manuscripts, as appropriate. Note that co-authorship eligibility is not limited to writing sections of a paper but rather it encompasses the broader contribution to data collection and analysis. Early communication with ASCENT team members and individual site principal investigators (contact information available here [https://ascent.caltech.edu/people]) is expected to ensure the quality and limitations of the data are accurately represented in the planned research. When using these data in a publication or presentation, we require that you: * Include this statement in the acknowledgement section: "The ASCENT data used in this work were supported by National Science Foundation (NSF) grants 2131914 and 2624916." * Cite the DOI for each ASCENT dataset used in your work (four citations total, one for each instrument). Use the citation text provided under the Citation tab on each dataset's GDEX page.

Limitations on public access

None

Responsible organisations

Responsible party

organisation name

email address

datahelp@ucar.edu

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

NSF NCAR Geoscience Data Exchange

email address

datahelp@ucar.edu

web address

https://gdex.ucar.edu

name: NSF NCAR Geoscience Data Exchange

description: The Geoscience Data Exchange (GDEX), managed by the Computational and Information Systems Laboratory (CISL) at NSF NCAR, contains a large collection of meteorological, atmospheric composition, and oceanographic observations, and operational and reanalysis model outputs, integrated with NSF NCAR High Performance Compute services to support atmospheric and geosciences research.

function: download

responsible party role

pointOfContact

Metadata date

2026-10-27T12:19:41Z

Metadata language