BAE Systems updates from the GeoXO Atmospheric Composition Instrument and application to future instruments

BAE Systems has two geostationary air quality instruments that are currently part of the Geo-Ring North, TEMPO and GEMS. The TEMPO mission was intended to demonstrate the ability and usefulness of hourly measurements of air quality, pollution sources, transport and chemistry over North America. BAE Systems recently finished a study and an initial contract to replace TEMPO with an updated instrument with more capability and minimal changes to heritage. This paper will review the TEMPO mission and the updates to the design, calibration, and capability of future ACX-like instrument. It will highlight how the improved capabilities could enhance the existing and future global monitoring system.