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A review of new aerosol climate data records from the ESA CCI Aerosol project

Popp, Thomas and de Leeuw, Gerrit and Pinnock, Simon (2016) A review of new aerosol climate data records from the ESA CCI Aerosol project. ESA Living Planet Symposium, 9. - 13. Mai 2016, Prag, Tschechien.

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Abstract

Within the ESA Climate Change Initiative (CCI) project Aerosol_cci (Phase 1: 2010 –2014; Phase 2: 2014-2017) intensive work has been conducted to improve algorithms for the retrieval of aerosol information from European sensors ATSR-2 (ERS-2), AATSR (3 algorithms), MERIS (3 algorithms), synergetic AATSR/SCIAMACHY, GOMOS (all on ENVISAT), IASI (on METOP), PARASOL and OMI (EOS-Aura) (both part of NASA’s A-Train). Whereas OMI and GOMOS are used to derive absorbing aerosol index and stratospheric extinction profiles, respectively, Aerosol Optical Depth (AOD), Fine-mode AOD and Ångström coefficient are retrieved from the other sensors, while the infrared IASI retrievals deliver mineral dust AOD. In addition also a per-pixel uncertainty is provided and validated. The algorithms are then used to produce full-mission time series covering 10 (stratospheric extinction), 17 (AOD) and 35(AAI) years. Using AERONET sun photometer data as the common ground-truth both ‘traditional’ statistical techniques and a ‘scoring’ technique based on spatial and temporal correlations were applied for thorough L2 and L3 product validation. The iterative cooperation between the project partners, including retrieval teams, independent validation teams and core users has resulted in a strong improvement of most algorithms. Several user case studies (data assimilation, trend analysis, radiative forcing, stratospheric climate-chemistry interaction, aerosol cloud interaction) are analyzing the potential usefulness and limitations of these datasets. Several retrieval inter-comparisons, so-called Round Robin exercise, have been conducted to assess the sensitivities of different algorithms for the same sensor (AATSR, IASI) or variable (absorption, layer height) and to reveal the major uncertainties, specific strengths and weaknesses of the different retrieval approaches under varying environmental conditions. The presentation will summarize and discuss the status of the Aerosol_cci efforts to produce consistent aerosol time series and characterize and document appropriately to users their potential benefits and limitations. An outlook overview of future potential developments will be deduced from the current status.

Item URL in elib:https://elib.dlr.de/104330/
Document Type:Conference or Workshop Item (Speech)
Title:A review of new aerosol climate data records from the ESA CCI Aerosol project
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Popp, Thomasthomas.popp (at) dlr.deUNSPECIFIED
de Leeuw, GerritFMIUNSPECIFIED
Pinnock, SimonESAUNSPECIFIED
Date:2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Atmospheric constituents, ESA Climate Change Initiative, CCI
Event Title:ESA Living Planet Symposium
Event Location:Prag, Tschechien
Event Type:international Conference
Event Dates:9. - 13. Mai 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 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:31 May 2016 08:54
Last Modified:31 May 2016 08:54

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