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New Campaign Data: Volatile Organic Compounds from the TOGA Instrument

Submitted by ORNL DAAC Staff on 2022-02-14
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Measurements of atmospheric acetone concentration from samples collected by the Trace Organic Gas Analyzer (TOGA) during ATom-3 flights in 2017
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Measurements of atmospheric acetone concentration from samples collected by the Trace Organic Gas Analyzer (TOGA) during ATom-3 flights in 2017.

The ORNL DAAC recently released an update to the following Atmospheric Tomography Mission (ATom) dataset by Apel, E.C., et al. (2021):

ATom: Volatile Organic Compounds (VOCs) from the TOGA instrument, Version 2

This updated dataset provides concentrations of volatile organic compounds (VOCs) measured by the Trace Organic Gas Analyzer (TOGA) during the four ATom campaigns. Specific data were obtained for radical precursors, tracers of anthropogenic and biogenic activities, tracers of urban and biomass combustion emissions, products of oxidative processing, precursors to aerosol formation, and compounds important for aerosol modification and transformation. TOGA measures a wide range of VOCs with high sensitivity (ppt or lower), frequency (2-minutes), accuracy (often 15% or better), and precision (<3%).  These data are relevant to the impact of human-produced air pollution on greenhouse gases and on chemically reactive gases in the atmosphere.

This version contains updated data files from the ATom-4 campaign, flown between April 24 and May 21, 2018. 

The Atmospheric Tomography Mission (ATom) is a NASA Earth Venture Suborbital-2 mission to study the impact of human-produced air pollution on greenhouse gases and on chemically reactive gases in the atmosphere. ATom deployed an extensive gas and aerosol payload on the NASA DC-8 aircraft for systematic, global-scale sampling of the atmosphere, profiling continuously from 0.2 to 12 km altitude. Around-the-world flights were conducted in each of four seasons between 2016 and 2018.

Additional data from ATom and other relevant links can be found on the ORNL DAAC's ATom Project Page.

Citation: Apel, E.C., E.C. Asher, A.J. Hills, and R.S. Hornbrook. 2021. ATom: Volatile Organic Compounds (VOCs) from the TOGA instrument, Version 2. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1936

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