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Improvements in MIPAS ESA V7 and V8 products and trends

Raspollini, Piera and Barbara, F. and Birk, Manfred and Castelli, E. and Ceccherini, Simone and Dehn, Angelika and Gai, M. and Dinelli, Bianca Maria and Dudhia, Anu and Flaud, Jean-Marie and Hoepfner, Michael and Hubert, Daan and Keppens, Arno and Kiefer, Michael and Kleinert, Anne and Moore, D. and Papandrea, E. and Perron, Gaetan and Piro, A. and López-Puertas, Manuel and Oelhaf, H. and Remedios, J. and Ridolfi, Marco and Sgheri, L. and Valeri, M. and Wagner, Georg and Wetzel, Gerald and Zoppetti, Nicole (2017) Improvements in MIPAS ESA V7 and V8 products and trends. EUMETSAT Meteorological Satellite Conference 2017, 2.-6.Oktober 2017, Rom, Italien.

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Abstract

MIPAS on ENVISAT performed almost continuous measurements of atmospheric composition from June 2002 to April 2012. ESA Level 2 processor, based on the Optimized Retrieval Model (ORM), originally designed for the Near Real Time analysis and developed by an European Consortium led by IFAC, is currently refined and used for the reanalysis of the full MIPAS mission. The maintenance and the upgrade of the ESA processor are made in the frame of the MIPAS Quality Working Group, where a fruitful collaboration among Level 1, Level 2 and validation teams can be exploited. This collaboration is essential to pursue improvements in the accuracy of the products and their characterization. This paper is meant to describe the most recent upgrades in the MIPAS processor to improve the quality of ESA products. In particular, the full mission was recently reprocessed with L1 V7 and L2 V7 processors, containing significant improvements with respect to previous version V6, and further improvements are in preparation, that will be collected in version 8 of the ESA processor. Improvements involve both L1 and L2 processors, as well as the auxiliary data. In the L1 processor the correction of the instrumental drift caused by the ageing of the detectors has been implemented in order to reduce the non negligible systematic error in the trend estimation; furthermore, the measured daily gain instead of weekly gain is now used for the radiometric calibration that allows to better take care of the discontinuities in the gain that occasionally occur in MIPAS band B. Improvements in the L2 processor include a different approach for retrieving atmospheric continuum, the use of an a posteriori regularization with altitude dependent constraint, a better approach for handling interfering species, a reduced bias in CFC-11, the handling of horizontal inhomogeneities and the use of ECMWF altitude/pressure relation to determine more accurate altitudes. Improvements in the auxiliary data consist in the use of microwindows with larger information content, an improved spectroscopic database and diurnally varying climatological dataset. Furthermore, with each new processor version additional species are provided, leading to 20 the number of retrieved species by the L2 V8 processor.Each of these changes has a different impact on the L2 products. The individual contributions, as well and the cumulative effects, will be evaluated with a comparison with previous versions of MIPAS products and corresponding results of validation. Improvements in the trend determination will also be evaluated, as well as the quality of the new retrieved species.

Item URL in elib:https://elib.dlr.de/120865/
Document Type:Conference or Workshop Item (Poster)
Title:Improvements in MIPAS ESA V7 and V8 products and trends
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Raspollini, PieraIstituto di Fisica Applicata 'Nello Carrara' (IFAC) del Consiglio Nazionale delleRicerche (CNR), Firenze (Italy)UNSPECIFIED
Barbara, F.IFAC-CNR, Florence, ItalyUNSPECIFIED
Birk, ManfredManfred.Birk (at) dlr.deUNSPECIFIED
Castelli, E.Istituto di Scienza dell’Atmosfera e del Clima (ISAC) del Consiglio Nazionale delle Ricerche (CNR), Bologna, ItalyUNSPECIFIED
Ceccherini, SimoneIstituto di Fisica Applicata 'Nello Carrara' (IFAC) del Consiglio Nazionale delleRicerche (CNR), Firenze (Italy)UNSPECIFIED
Dehn, AngelikaESA-ESRIN, Via Galileo Galilei, 00044 Frascati, ItalyUNSPECIFIED
Gai, M.Istituto di Fisica Applicata ‘N. Carrara’ of CNR, Florence, ItalyUNSPECIFIED
Dinelli, Bianca MariaIstituto di Scienza dell’Atmosfera e del Clima (ISAC) del Consiglio Nazionale delle Ricerche (CNR), Bologna, ItalyUNSPECIFIED
Dudhia, AnuAtmospheric, Oceanic and Planetary Physics – Clarendon Laboratory – Oxford University, UKUNSPECIFIED
Flaud, Jean-MarieLISA, CNRS/Universites ParisUNSPECIFIED
Hoepfner, MichaelKarlsruhe Institute of Technology, Institute for Meteorology and Climate Research, Karlsruhe, GermanyUNSPECIFIED
Hubert, Daanbira-iasbUNSPECIFIED
Keppens, ArnoBIRA-IASBUNSPECIFIED
Kiefer, MichaelKIT-IMK, H.-v.-Helmholtz-Platz 1, 76344 Leopoldshafen, GermanyUNSPECIFIED
Kleinert, AnneKarlsruhe Institute of Technology (KIT), Institute for Meteorology and Climate Research (IMK), 76021 Karlsruhe, GermanyUNSPECIFIED
Moore, D.Department of Physics & Astronomy, University of LeicesterUNSPECIFIED
Papandrea, E.Istituto di Scienza dell’Atmosfera e del Clima (ISAC) del Consiglio Nazionale delle Ricerche (CNR), Bologna, ItalyUNSPECIFIED
Perron, GaetanABB BOMEM Inc., 585 Blvd. Charest East, Quebéc, CanadaUNSPECIFIED
Piro, A.SERCO SpA, Via Sciadonna 24, 00044 Frascati, ItalyUNSPECIFIED
López-Puertas, ManuelInstituto de Astrofisica de Andalucia (CSIC), Granada, SpainUNSPECIFIED
Oelhaf, H.Karlsruhe Institute of Technology, Institute for Meteorology and Climate Research, Karlsruhe, GermanyUNSPECIFIED
Remedios, J.Department of Physics & Astronomy, University of LeicesterUNSPECIFIED
Ridolfi, MarcoDipartimento di Fisica Chimica ed Inorganica, University of Bologna, ItalyUNSPECIFIED
Sgheri, L.Istituto di Scienza dell’Atmosfera e del Clima (ISAC) del Consiglio Nazionale delle Ricerche (CNR), Bologna, ItalyUNSPECIFIED
Valeri, M.Dipartimento di Fisica Chimica ed Inorganica, University of Bologna, ItalyUNSPECIFIED
Wagner, GeorgGeorg.Wagner (at) dlr.deUNSPECIFIED
Wetzel, GeraldKarlsruhe Institute of Technology (KIT), Institute for Meteorology and Climate Research (IMK), 76021 Karlsruhe, GermanyUNSPECIFIED
Zoppetti, NicoleIstituto di Fisica Applicata 'Nello Carrara' (IFAC) del Consiglio Nazionale delleRicerche (CNR), Firenze (Italy)UNSPECIFIED
Date:October 2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:MIPAS/ENVISAT, processor update, atmospheric composition
Event Title:EUMETSAT Meteorological Satellite Conference 2017
Event Location:Rom, Italien
Event Type:international Conference
Event Dates:2.-6.Oktober 2017
Organizer:EUMETSAT
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):Vorhaben Spectroscopic Methods in Remote Sensing
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Experimental Methods
Deposited By: Birk, Manfred
Deposited On:09 Jul 2018 12:55
Last Modified:31 Jul 2019 20:18

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