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Aerosol Climate Time Series in ESA Aerosol_cci

Popp, Thomas and de Leeuw, Gerrit and Pinnock, Simon (2016) Aerosol Climate Time Series in ESA Aerosol_cci. In: Geophysical Research Abstracts, 18, p. 4254. EGU. EGU General Assembly 2016, 18.-22.04.2016, Wien.

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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. Meanwhile, 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, but also from ATSR instruments and the POLDER sensor), absorption information and aerosol layer height. As a quasireference 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 were also validated and improved in the reprocessing. For the three ATSR algorithms the use of an ensemble method was tested. The paper will summarize and discuss the status of dataset reprocessing and validation. 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/104091/
Document Type:Conference or Workshop Item (Speech)
Title:Aerosol Climate Time Series in ESA Aerosol_cci
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Popp, Thomasthomas.popp (at) dlr.deUNSPECIFIED
de Leeuw, GerritFMIUNSPECIFIED
Pinnock, SimonESAUNSPECIFIED
Date:19 April 2016
Journal or Publication Title:Geophysical Research Abstracts
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:18
Page Range:p. 4254
Publisher:EGU
Status:Published
Keywords:Aerosols, climate data records, ESA Climate Change Initiative
Event Title:EGU General Assembly 2016
Event Location:Wien
Event Type:international Conference
Event Dates:18.-22.04.2016
Organizer:EGU
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:11 May 2016 08:54
Last Modified:31 Jul 2019 20:01

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