The Atmospheric Tomography Experiment (ATom): Adventures in Chemistry in the Most Remote Parts of the Globe

The Atmospheric Tomography Experiment (ATom) has completed two of four global measurement programs (August, 2016; February 2017), with two more planned (October, 2017; April 2018). Each deployment takes the NASA DC-8 on meridional transects of the central Pacific and Atlantic Oceans, plus extensive sampling of the Arctic Ocean basin and the Southern Ocean , all with frequent deep profiling of the atmosphere from ~200 m to ~10,000m. The ATom comprehensive chemistry and aerosol payload characterizes the chemical and physical state of the most remote regions of the global atmosphere, enabling us to measure key chemical rates and to define the human impacts and the influence of ocean-atmosphere exchange on a global scale. This talk repesents the work of the entire ATom Science Team, providing an overview of the mission, including science goals, operations, observations, and early results.