Skip to main content
U.S. flag

An official website of the United States government

ATom: L2 Measurements from CU High-Resolution Aerosol Mass Spectrometer (HR-AMS)

Published by ORNL_DAAC | National Aeronautics and Space Administration | Catalog Last Checked: June 23, 2026 at 09:23 PM | Dataset Last Updated: June 22, 2026
This dataset provides the atmospheric concentrations of separated ions from inorganic and organic species measured by the High-Resolution Aerosol Mass Spectrometer (HR-AMS) collected during flights of the NASA ATom Mission. Data are available from all four ATom Campaigns. The HR-AMS detects non-refractory submicron aerosol composition by impaction on a vaporizer at 600 degrees C, followed by electron ionization and time-of-flight mass spectral analysis. The measurements include chemically speciated submicron non-refractory particulate mass at a one second and 60 second resolution, and the size distribution of chemically speciated submicron non-refractory particulate mass at 60 second resolution.

Resources

8 resources available

Find Related Datasets

Search by Tags

Click any tag below to search for similar datasets

Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "026:00"
]
contactPoint 
{
  "fn": "Earthdata Forum",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:earthdata-support@nasa.gov"
}
description This dataset provides the atmospheric concentrations of separated ions from inorganic and organic species measured by the High-Resolution Aerosol Mass Spectrometer (HR-AMS) collected during flights of the NASA ATom Mission. Data are available from all four ATom Campaigns. The HR-AMS detects non-refractory submicron aerosol composition by impaction on a vaporizer at 600 degrees C, followed by electron ionization and time-of-flight mass spectral analysis. The measurements include chemically speciated submicron non-refractory particulate mass at a one second and 60 second resolution, and the size distribution of chemically speciated submicron non-refractory particulate mass at 60 second resolution.
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "Original Metadata",
    "format": "ISO",
    "mediaType": "text/xml",
    "conformsTo": "http://www.isotc211.org/2005/gmi",
    "description": "The metadata's original source.",
    "downloadURL": "https://cmr.earthdata.nasa.gov/search/concepts/C2676900537-ORNL_CLOUD.iso19115"
  },
  {
    "@type": "dcat:Distribution",
    "format": "PNG",
    "mediaType": "image/png",
    "downloadURL": "https://daac.ornl.gov/ATOM/guides/ATom_HR-AMS_Instrument_Data_Fig1.png"
  },
  {
    "@type": "dcat:Distribution",
    "format": "ZIP",
    "mediaType": "application/zip",
    "downloadURL": "https://data.ornldaac.earthdata.nasa.gov/protected/bundle/ATom_HR-AMS_Instrument_Data_1716.zip"
  },
  {
    "@type": "dcat:Distribution",
    "format": "CSV",
    "mediaType": "text/csv",
    "downloadURL": "https://data.ornldaac.earthdata.nasa.gov/public/atom/ATom_HR-AMS_Instrument_Data/comp/AMS-60s_Data_Dictionary.csv"
  },
  {
    "@type": "dcat:Distribution",
    "format": "CSV",
    "mediaType": "text/csv",
    "downloadURL": "https://data.ornldaac.earthdata.nasa.gov/public/atom/ATom_HR-AMS_Instrument_Data/comp/AMSSD_Data_Dictionary.csv"
  },
  {
    "@type": "dcat:Distribution",
    "format": "CSV",
    "mediaType": "text/csv",
    "downloadURL": "https://data.ornldaac.earthdata.nasa.gov/public/atom/ATom_HR-AMS_Instrument_Data/comp/AMS_Data_Dictionary.csv"
  },
  {
    "@type": "dcat:Distribution",
    "format": "HTML",
    "mediaType": "text/html",
    "downloadURL": "https://doi.org/10.3334/ORNLDAAC/1716"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "https://search.earthdata.nasa.gov/search/granules?p=C2676900537-ORNL_CLOUD"
  }
]
identifier 10.3334/ORNLDAAC/1716
keyword 
[
  "earth-science-aerosols-atmosphere",
  "earth-science-air-quality-atmosphere"
]
license https://www.usa.gov/government-works
modified 2026-06-22
programCode 
[
  "026:000"
]
publisher 
{
  "name": "ORNL_DAAC",
  "@type": "org:Organization"
}
spatial 
"["CARTESIAN", [{"WestBoundingCoordinate": -180.0, "NorthBoundingCoordinate": 90.0, "EastBoundingCoordinate": 180.0, "SouthBoundingCoordinate": -90.0}]]"
temporal 2016-07-29/2018-05-21
theme 
[
  "Earth Science"
]
title ATom: L2 Measurements from CU High-Resolution Aerosol Mass Spectrometer (HR-AMS)

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov