Speaker
Description
We present an analysis of ozone data products retrieved from multiple satellite observations. Specifically, we highlight data from the TRopospheric Ozone and its Precursors from Earth System Sounding (TROPESS) project which is a NASA effort that provides retrievals of atmospheric ozone utilizing radiances from a variety of different satellite instruments. The multispectral retrievals of ozone utilize the Multi-Spectra, Multi-Species, Multi-Sensors Retrievals of Trace Gases (MUSES) retrieval framework to produce consistent estimations of ozone from different satellite radiances. TROPESS ozone data products are retrieved from the Atmospheric Infrared Sounder (AIRS), the Ozone Monitoring Instrument (OMI), the Cross-track Infrared Sounder (CrIS) instruments, and combinations of these satellites.
Ozone products are evaluated against global ozonesonde data provided by the World Ozone and Ultraviolet Radiation Data Centre (WOUDC). Satellite products are evaluated against both harmonized ozonesonde data (60 sites) and original WOUDC data (44 sites). Satellite-sonde bias is quantified globally and locally dating from 2002 to the present. Trends in ozone are also presented and evaluated globally and regionally. We present results for tropospheric profiles, tropospheric columns, and total ozone columns. We find that the magnitude of ozone vertical profiles and columns agree between satellites to a high degree, but we are still investigating the trends seen in the different data sets. We investigate the causes of these differences between satellites, including instrument type and vertical sensitivity of the retrievals. We show ongoing work wherein the averaging kernels for each TROPESS product are applied to ozone predictions from the MOMO-Chem Reanalysis framework to investigate the impact of satellite vertical sensitivity on ozone distribution.
