Conference proceeding
Evaluating a Priori Ozone Profile Information Used in TEMPO Tropospheric Ozone Retrievals
A41A-0005
American Geophysical Union (AGU) Fall Meeting
12/12/2016
Abstract
Ozone (O3) is a greenhouse gas and toxic pollutant which plays a major role in air quality. Typically, monitoring of surface air quality and O3 mixing ratios is primarily conducted using in situ measurement networks. This is partially due to high-quality information related to air quality being limited from space-borne platforms due to coarse spatial resolution, limited temporal frequency, and minimal sensitivity to lower tropospheric and surface-level O3. The Tropospheric Emissions: Monitoring of Pollution (TEMPO) satellite is designed to address these limitations of current space-based platforms and to improve our ability to monitor North American air quality. TEMPO will provide hourly data of total column and vertical profiles of O3 with high spatial resolution to be used as a near-real-time air quality product.TEMPO O3 retrievals will apply the Smithsonian Astrophysical Observatory profile algorithm developed based on work from GOME, GOME-2, and OMI. This algorithm uses a priori O3 profile information from a climatological data-base developed from long-term ozone-sonde measurements (tropopause-based (TB) O3 climatology). It has been shown that satellite O3 retrievals are sensitive to a priori O3 profiles and covariance matrices. During this work we investigate the climatological data to be used in TEMPO algorithms (TB O3) and simulated data from the NASA GMAO Goddard Earth Observing System (GEOS-5) Forward Processing (FP) near-real-time (NRT) model products. These two data products will be evaluated with ground-based lidar data from the Tropospheric Ozone Lidar Network (TOLNet) at various locations of the US. This study evaluates the TB climatology, GEOS-5 climatology, and 3-hourly GEOS-5 data compared to lower tropospheric observations to demonstrate the accuracy of a priori information to potentially be used in TEMPO O3 algorithms. Here we present our initial analysis and the theoretical impact on TEMPO retrievals in the lower troposphere.
Details
- Title: Subtitle
- Evaluating a Priori Ozone Profile Information Used in TEMPO Tropospheric Ozone Retrievals
- Creators
- Matthew S. Johnson - Ames Research CenterJohn Sullivan - Universities Space Research AssociationXiong Liu - Center for Astrophysics Harvard & SmithsonianMike Newchurch - Alabama UnivShi Kuang - Alabama UnivThomas McGee - Universities Space Research AssociationAndrew Langford - National Oceanic and Atmospheric AdministrationChris Senff - National Oceanic and Atmospheric AdministrationThierry Leblanc - Jet Propulsion LaboratoryTimothy Berkoff - Langley Research CenterGuillaume Gronoff - Science Systems and ApplicationsGao Chen - Langley Research CenterKevin Strawbridge - Environment Canada Climate Change Canada (ECCC)
- Resource Type
- Conference proceeding
- Publication Details
- A41A-0005
- Conference
- American Geophysical Union (AGU) Fall Meeting
- Publisher
- Ames Research Center
- Language
- English
- Date published
- 12/12/2016
- Description audience
- PUBLIC
- Academic Unit
- Iowa Technology Institute
- Record Identifier
- 9984721111702771
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