ATom: Measurements of Soluble Acidic Gases and Aerosols (SAGA)

Soluble acidic gases and aerosols (SAGA) were collected with two related installations; a mist chamber/ion chromatography (MC/IC) system and a paired bulk aerosol system. The MC/IC system measures in situ atmospheric distributions of nitric acid (plus < 1 um NO3 aerosol) and fine (< 1 um) aerosol sulfate at an approximately 80-second interval. The paired bulk aerosol system collects particulates onto filters for subsequent analysis. Collected filters were first extracted with water to obtain the water-soluble (WS) constituents and then extracted again using methanol to collect the methanol soluble (MS) fraction. The light absorption of filtered extracts was measured from 300 to 700 nm. Ion chromatography on aqueous extracts of the bulk aerosol samples collected on Teflon filters were used to quantify soluble ions (Cl-, Br-, NO3-, SO42-, C2O42-, Na+, NH4+, K+, Ca+, and Mg+). The SAGA system is provided by the University of New Hampshire (UNH).

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated April 7, 2025, 18:26 (UTC)
Created March 20, 2025, 14:47 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id a36f6bb8-d75f-478c-bbc5-a71d40e9576d
harvest_source_id 44069cc8-d515-495f-9ea4-b67f76a0a7cb
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/1748
modified 2025-04-07T16:41:35Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 0f9f834da20e73ab15825cf24c899783c5c39b99a5cdf355754d139dac5ef43c
source_schema_version 1.1
spatial ["CARTESIAN",[{"WestBoundingCoordinate":-180.0,"NorthBoundingCoordinate":90.0,"EastBoundingCoordinate":180.0,"SouthBoundingCoordinate":-90.0}]]
theme {"Earth Science"}