[AAS07-04] Multi-Spectral/Multi-Sensor Satellite Retrievals and Cross-Sensor Validation of Ozone and Carbon Monoxide within the TROPESS Framework
Keywords:Satellite Air Quality Monitoring, Ozone, Carbon Monoxide
Differences in retrieval approach usually pose a challenge when combining and comparing retrieval products from different sensors. The TRopospheric Ozone and its Precursors from Earth System Sounding (TROPESS) framework is being developed at JPL as a continuation of atmospheric composition retrieval and validation tools developed for Aura/TES. Key elements of TROPESS are Reusable Framework for Atmospheric Composition (ReFRACtor), an extensible multi-instrument retrieval framework that facilitates data fusion of radiance measurements from different instruments (UV to thermal IR spectrum); and Multi-Spectral, Multi-Species, Multi-Sensors (MUSES), a retrieval code based on optimal estimation that has been applied successfully to joint AIRS/OMI observations. ReFRACtor/MUSES is designed to retrieve trace gas vertical profile concentrations and total column amounts in a consistent manner across spectral regions, by combining fast and accurate radiative transfer code with a non-linear optimal estimation solver. Inclusion of instrument-specific information allows the application of the same code base to different sensors for a consistent retrieval methodology across platforms, facilitating retrieval comparison across platforms. The goal is to extend single-instrument retrieval capabilities to joint multi-spectral retrievals like AIRS/OMI and CrIS/OMPS.
We present results on the concentration and vertical distribution of O3 and CO, derived from the application of ReFRACtor/MUSES to AIRS/OMI and CrIS observations during 2019 FIREX-AQ, including comparisons with standard data products from OMPS and TROPOMI, pixel-matched OMPS/TROPOMI radiance calibration, and OMPS/TROPOMI tropospheric ozone comparisons with GEOS-Chem profiles.