ATom: L2 In Situ Measurements of Aerosol Microphysical Properties (AMP)

This dataset provides the number, surface area, and volume concentrations and size distributions of dry aerosol particles measured by the Aerosol Microphysical Properties (AMP) instrument package during airborne campaigns conducted by NASA's Atmospheric Tomography (ATom) mission. Five instruments--two nucleation-mode aerosol size spectrometers (NMASS), two ultra-high sensitivity aerosol spectrometers (UHSAS), and a laser aerosol spectrometer (LAS)--comprise the AMP package. The AMP payload provides size distributions with up to one-second time resolution for dry aerosol particles between 0.003 and 4.8 microns in diameter.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated October 27, 2026, 01:33 (UTC)
Created April 1, 2025, 14:38 (UTC)
Identifier 10.3334/ORNLDAAC/1671
Modified 2026-10-19T22:16:06Z
Theme {"Earth Science"}
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id fe7f6d96-2de1-4003-83d8-cba1344e5c74
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
license https://www.usa.gov/government-works
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash de46861bd790a2e4a66abeacbeb267df30adad189078ca2a352cd016f96476bf
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -180.0, "NorthBoundingCoordinate": 90.0, "EastBoundingCoordinate": 180.0, "SouthBoundingCoordinate": -90.0}]]
temporal 2016-07-29/2018-05-21