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Abstract Mercury is a persistent pollutant with significant public health impacts in polar regions where fish consumption drives human exposure. Atmospheric oxidation pathways control where mercury deposits globally, but the lack of molecular-level observations of oxidized mercury products has hindered the validation of proposed chemical mechanisms.
Abstract A 10-fold enhancement of lithium atoms was detected at 96 km altitude by a resonance lidar at Kühlungsborn, Germany, approximately 20 hours after the uncontrolled re-entry of a Falcon 9 upper stage. The upper-atmospheric extension of the ICON general circulation model, nudged to ECMWF, was used to calculate winds. Backwards trajectories, including wind variability as measured by radar, traced air masses to the Falcon 9 re-entry path at 100 km altitude, west of Ireland.
As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work.
