edu.ucar.gdex::d389501 eng; USA utf-8 dataset NSF NCAR Geoscience Data Exchange datahelp@ucar.edu https://gdex.ucar.edu NSF NCAR Geoscience Data Exchange 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. download pointOfContact 2026-10-27T12:19:41Z ISO 19115 Geographic Information - Metadata ISO19115:2003/Cor 1 2006 https://doi.org/10.5065/KAT3-2Z83 https://ascent.caltech.edu/ https Related Resource #1 ASCENT Website at Caltech PM2.5 Equivalent Black Carbon Measurements from ASCENT d389501 2025-09-24 publication The ASCENT Team author NSF National Center for Atmospheric Research publisher 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. completed datahelp@ucar.edu pointOfContact notPlanned dataset https://gdex.ucar.edu/images/ds_logos/ascent-logo-bigger_379_227.png Logo thumbnail from URL png CSV dataset Resource Type 2021-03-30 revision 4.4 DataCite Metadata Working Group orginator resourceTypeGeneral ASCENT > Atmospheric Science and Chemistry mEasurement NeTwork U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-10-14 revision 25.0 NASA Global Change Master Directory orginator Valids List: Platforms EARTH SCIENCE > ATMOSPHERE > AEROSOLS > BLACK CARBON U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-10-14 revision 25.0 NASA Global Change Master Directory orginator Valids List: Science and Services Keywords 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. None eng utf-8 climatologyMeteorologyAtmosphere 2022-10-07 2026-09-30 NSF NCAR Geoscience Data Exchange datahelp@ucar.edu https://gdex.ucar.edu distributor 5243.878 https://gdex.ucar.edu/datasets/d389501/ https Dataset Description Related Link information https://gdex.ucar.edu/datasets/d389501/dataaccess/ https Data Access Related Link download none asNeeded