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

Published by ORNL_DAAC | National Aeronautics and Space Administration | Metadata Last Checked: October 22, 2025 | Last Modified: 2025-09-10

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.

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Complete Metadata

bureauCode	[ "026:00" ]
identifier	10.3334/ORNLDAAC/1716
landingPage	https://search.earthdata.nasa.gov/search?q=ATom_HR-AMS_Instrument_Data_1716&ac=true
programCode	[ "026:000" ]
spatial	[[{"WestBoundingCoordinate":-180.0,"NorthBoundingCoordinate":90.0,"EastBoundingCoordinate":180.0,"SouthBoundingCoordinate":-90.0}],"CARTESIAN"]
temporal	2016-07-29/2016-07-29
theme	[ "Earth Science" ]