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Validation Of The ESA-CCI Harmonized Tropospheric Ozone Column Data Product, Using Balloon Sounding Data

Delcloo, Andy and Heue, Klaus-Peter and Keppens, Arno and Coldewey-Egbers, Melanie and Lerot, Christophe and Hubert, Daan and Verhoelst, Tijl and Loyola, Diego and Valks, Pieter and Lambert, J.-C. and Witte, Jacquelyn and Thompson, A.M. and Van Roozendael, Michel (2016) Validation Of The ESA-CCI Harmonized Tropospheric Ozone Column Data Product, Using Balloon Sounding Data. ESA Atmospheric Composition Validation and Evolution 2016, 18.-20. Okt. 2016, Frascati, Italy.

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Abstract

Within the ESA Ozone-CCI project, a Convective Cloud Differential (CCD) algorithm has been used to derive a harmonized dataset of 20 years (July 1995 –December 2015) of Tropical Tropospheric Ozone Column (TTOC) data for the Tropical latitude belt (20° S – 20° N). This homogenized dataset can be used in climate research studies, e.g. validating chemical transport models, helping us to understand the processes which are responsible for the variability of tropospheric ozone in the Tropical belt. The accuracy of this CCD method has been assessed by comparing the tropospheric ozone columns with ozonesonde measurements obtained from the SHADOZ network. Validation results of this Tropical Tropospheric Ozone Column (TTOC) product will be presented. The tropospheric ozone retrieval is based on the consistent ESA-CCI total ozone dataset retrieved from the successive GOME, SCIAMACHY, GOME-2A, GOME-2B and OMI sensors, applying the GODFITv3 algorithm. The TTOC product is available as monthly averages with a horizontal resolution of 1.25° latitude x 2.5° longitude. The TTOC time series will be extended in the future with the upcoming Sentinel 5 Precursor data. For S5P both the GODFIT and the TTOC will be an operational offline product. The validation results reveal that the merged TTOC product is after comparison with ozonesonde data for most of the stations within 10 % relative difference error. The correlation varies between 0.43 and 0.84 with a rmse between 3.3 and 5.1 DU. When comparing the total uncertainty among the different sensors with the harmonized dataset, it is shown that the harmonized dataset leads towards a better agreement between the different instruments.

Item URL in elib:https://elib.dlr.de/110370/
Document Type:Conference or Workshop Item (Poster)
Title:Validation Of The ESA-CCI Harmonized Tropospheric Ozone Column Data Product, Using Balloon Sounding Data
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Delcloo, Andyrmi, brussels, belgienUNSPECIFIED
Heue, Klaus-PeterKlaus-Peter.Heue (at) dlr.dehttps://orcid.org/0000-0001-8823-7712
Keppens, Arnobira-iasbUNSPECIFIED
Coldewey-Egbers, MelanieMelanie.Coldewey-Egbers (at) dlr.deUNSPECIFIED
Lerot, Christophebira-iasbUNSPECIFIED
Hubert, Daanbelgian institute fpr space aeronomy, belgieUNSPECIFIED
Verhoelst, Tijlbira-iasbUNSPECIFIED
Loyola, DiegoDiego.Loyola (at) dlr.dehttps://orcid.org/0000-0002-8547-9350
Valks, PieterPieter.Valks (at) dlr.deUNSPECIFIED
Lambert, J.-C.biraUNSPECIFIED
Witte, JacquelynNASA/SSAI, USAUNSPECIFIED
Thompson, A.M.nasa goddard space flight center, greenbelt, md, usaUNSPECIFIED
Van Roozendael, Michelbira-iasbUNSPECIFIED
Date:19 October 2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:troposphärisches Ozon Validation
Event Title:ESA Atmospheric Composition Validation and Evolution 2016
Event Location:Frascati, Italy
Event Type:international Conference
Event Dates:18.-20. Okt. 2016
Organizer:ESA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Heue, Klaus-Peter
Deposited On:11 Jan 2017 10:00
Last Modified:11 Jan 2017 10:00

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