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Aerosol Climate Time Series Evaluation In ESA Aerosol_cci

Popp, Thomas and de Leeuw, Gerrit and Pinnock, S. (2015) Aerosol Climate Time Series Evaluation In ESA Aerosol_cci. AGU fall meeting 2015, 14. - 18. 12. 2015, San Francisco.

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Abstract

Within the ESA Climate Change Initiative (CCI) Aerosol_cci (2010 - 2017) conducts intensive work to improve algorithms for the retrieval of aerosol information from European sensors. By the end of 2015 full mission time series of 2 GCOS-required aerosol parameters are completely validated and released: Aerosol Optical Depth (AOD) from dual view ATSR-2 / AATSR radiometers (3 algorithms, 1995 - 2012), and stratospheric extinction profiles from star occultation GOMOS spectrometer (2002 – 2012). Additionally, a 35-year multi-sensor time series of the qualitative Absorbing Aerosol Index (AAI) together with sensitivity information and an AAI model simulator is available. Complementary aerosol properties requested by GCOS are in a “round robin” phase, where various algorithms are inter-compared: fine mode AOD, mineral dust AOD (from the thermal IASI spectrometer), absorption information and aerosol layer height. As a quasi-reference for validation in few selected regions with sparse ground-based observations the multi-pixel GRASP algorithm for the POLDER instrument is used. Validation of first dataset versions (vs. AERONET, MAN) and inter-comparison to other satellite datasets (MODIS, MISR, SeaWIFS) proved the high quality of the available datasets comparable to other satellite retrievals and revealed needs for algorithm improvement (for example for higher AOD values) which were taken into account for a reprocessing. The datasets contain pixel level uncertainty estimates which are also validated. The paper will summarize and discuss the results of major reprocessing and validation conducted in 2015. The focus will be on the ATSR, GOMOS and IASI datasets. Pixel level uncertainties validation will be summarized and discussed including unknown components and their potential usefulness and limitations. Opportunities for time series extension with successor instruments of the Sentinel family will be described and the complementarity of the different satellite aerosol products (e.g. dust vs. total AOD, ensembles from different algorithms for the same sensor) will be discussed.

Item URL in elib:https://elib.dlr.de/101091/
Document Type:Conference or Workshop Item (Speech)
Title:Aerosol Climate Time Series Evaluation In ESA Aerosol_cci
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Popp, Thomasthomas.popp (at) dlr.deUNSPECIFIED
de Leeuw, GerritFMIUNSPECIFIED
Pinnock, S.ESAUNSPECIFIED
Date:15 December 2015
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Aerosole, Klimazeitreihen ESA
Event Title:AGU fall meeting 2015
Event Location:San Francisco
Event Type:international Conference
Event Dates:14. - 18. 12. 2015
Organizer:AGU
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 Datenprodukte für Klima- und Atmosphärenanwendungen (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Atmosphere
Deposited By: Popp, Dr.rer.nat Thomas
Deposited On:16 Dec 2015 13:55
Last Modified:10 May 2016 23:39

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