Improvement of Algorithms for the Retrieval of Aerosol Optical Properties over Land

A contribution to ACCENT-TROPOSAT-2, Task Group 1

Walter Di Nicolantonio

Carlo Gavazzi Space S.p.A. Bologna
CNR-ISAC Institute of Atmospheric Sciences and Climate
via P. Gobetti 101, 40129 Bologna, Italy
Tel: +39-051639-8097
Fax: +39-051639-8143

This study is focused on the improvement of an already existing algorithm able to retrieve aerosol optical properties, like AOD and type of aerosols, over sea surface from GOME and SCIAMACHY measurements. This algorithm will be expanded in order to be used over land. Furthermore, the potential use of EO data in air quality applications will be explored. In this framework, three main activities are singled out:

1. Retrieval of aerosol optical properties over land from SCIAMACHY measurements

Correction for weakly cloud-contaminated pixels

Evaluation of different models/measurements of surface reflectance effects in the AOD retrieval for the SCIAMACHY pixel;

Implementation of new aerosol classes to be inserted in the inversion algorithm;

Detection of different types of aerosol loadings: desert dust outbreak, biomass burning, industrial/urban pollution. 

2. Study of the relationship between AOD retrieved from satellite measurements (for instance AATSR/Envisat, MODIS/Terra, Aqua) and PM content in air quality context

Height issue: the importance of aerosol, mixing, and meteorological scale heights in relating columnar to surface aerosol parameters;

Sensitivity studies on the relation between aerosol work-wavelengths for satellite sensors and particles aerodynamic diameter (PM 10, PM2.5);

Exploring the potential use of aerosol properties retrieved from satellite sensor in chemical transport models.

3. Evaluation of the added value given by geostationary observations to aerosol retrieval for air quality issue

Investigation on the possible use of a combination of SEVIRI channels to detect important aerosol transport events (i.e. desert dust, biomass burning, smokes).

Time schedule

 

2005

2006

2007

2008

Activity 1

*

*

 

 

Activity 2

*

*

*

*

Activity 3

*

*

*

*

Approximate manpower and cost

 

2005

2006

2007

2008

Personnel / man-years

3

3

2

2

Yearly cost (kECU)

23

23

15

15

Likely funding agencies

ESA, Italian National Bodies (Italian Space Agency, Regione Emilia-Romagna)

Co-workers

Prof. Rodolfo Guzzi
    Italian Space Agency - ASI - Italy

Prof. Dr. Gerrit De Leeuw
    TNO Physics and Electronic Laboratory, The Netherlands

Dr. Claudio Tomasi
    Institute of Atmospheric Sciences and Climate, ISAC-CNR Bologna, Italy

 


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