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

Description

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).

Resources

Name Format Description Link
21 ATom campaign page https://daac.ornl.gov/ATOM/campaign/
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/1748
22 The SAGA installation onboard the DC-8 - AFRC aircraft. https://daac.ornl.gov/ATOM/guides/ATom_SAGA_Instrument_Data_Fig1.jpg
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F1748
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/atom/ATom_SAGA_Instrument_Data/
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/ATOM/guides/ATom_SAGA_Instrument_Data.html
33 ATom: Measurements of Soluble Acidic Gases and Aerosols (SAGA): ATom_SAGA_Instrument_Data.pdf https://data.ornldaac.earthdata.nasa.gov/public/atom/ATom_SAGA_Instrument_Data/comp/ATom_SAGA_Instrument_Data.pdf

Tags

  • aerosols
  • atmosphere
  • air-quality
  • earth-science

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