10.3334/ORNLDAAC/1748
Dibb, J.E.
J.E.
Dibb
ATom: Measurements of Soluble Acidic Gases and Aerosols (SAGA)
Atmospheric Tomography Mission (ATom)
ORNL Distributed Active Archive Center
2020
ATMOSPHERE > AEROSOLS > NITRATE PARTICLES
ATMOSPHERE > AEROSOLS > CHEMICAL COMPOSITION
ATMOSPHERE > AIR QUALITY
ATMOSPHERE > AEROSOLS > SULFATE PARTICLES
NASA DC-8 > ION CHROMATOGRAPHS
chromatography
soluble ions
chemistry
pollutants
emissions
ORNL DAAC
0000-00-00
0000-00-00
2016-07-29/2018-05-21
en
https://daac.ornl.gov/ATOM/guides/ATom_SAGA_Instrument_Data.html
https://daac.ornl.gov/cgi-bin/dataset_lister.pl?p=39
Data Files
1.403696 MB
ICARTT
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).
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