Elisa Castelli

Fifth International Radiative Transfer Modeling Workshop in Bredbeck, July 7 to 10, 2003.

ISAC is a national institute of CNR whose headquarters are located in Bologna on the southern outskirts of the Po Valley, at the foothills of the Apennines.

Over 200 staff members, postdoctoral researchers, and students. Focus on understanding atmospheric processes and climate with emphasis

on

• atmospheric radiation, • radarmeteorology, • satellite meteorology, • climate and its variations, • atmospheric chemistry, • atmospheric aerosols, • atmospheric composition and trace gases, • cloud physics …

Fifth International Radiative Transfer Modeling Workshop in Bredbeck, July 7 to 10, 2003.

My instituteInstitute of Atmospheric Sciences and Climate (ISAC) of the Italian National

Research Council (CNR).

Development of algorithm to retrieve stratospheric chemical and physical parameters using far infrared spectra. Data

analysis of measurements recorded by SAFIRE and MARSCHALS instruments.

(Supervisor: Bianca Maria Dinelli)• SAFIRE-A: is a far infrared fourier transform spectrometer operating

onboard Geophysica Stratospheric Aircraft.

• MARSCHALS: Millimetre-wave Airborne Receiver for Spectroscopic CHaracterisation of Atmospheric Limb-Sounding, which is a European Space Agency prototype airborne instrument

Fifth International Radiative Transfer Modeling Workshop in Bredbeck, July 7 to 10, 2003.

My work

ENVISAT VALIDATION CAMPAIGN MID-LAT VALIDATION CAMPAIGN, Forlì - October 2002

ARCTIC VALIDATION CAMPAIGNS, Kiruna - January-March 2003

Fifth International Radiative Transfer Modeling Workshop in Bredbeck, July 7 to 10, 2003.

The M55- Geophysica

The M-55 Geophysica is a dual turbofan aircraft produced by Myasishchev Design Bureau (MDB). The aircraft can carry heavy

payloads of the order of 1500 kg and can operate at an altitude up to 21-22 km for about 5-6 hours.

Fifth International Radiative Transfer Modeling Workshop in Bredbeck, July 7 to 10, 2003.

RAS: Retrieval Algorithm for SAFIRE-A

T,P profiles from ECMWF or

NCEP data

VMR profiles from models

Spectroscopic data from HITRAN database

RAS

Forward model: creation of syntetic

spectra

Trough χ2

minimization

VMR profiles for O3, H2O, HCl, N2O, HNO3, ClO, OH

INVERSION METHOD

Fifth International Radiative Transfer Modeling Workshop in Bredbeck, July 7 to 10, 2003.

Fifth International Radiative Transfer Modeling Workshop in Bredbeck, July 7 to 10, 2003.

ENVISAT VALIDATION CAMPAIGN

MID-LAT VALIDATION CAMPAIGN, Forlì - October 2002

MARSCHALS• MARSCHALS is an heterodyne instrument that measures the

atmospheric thermal emission with the limb sounding technique, operates within the atmosphere on an air-borne platform.

• Major objective is to test measurements capabilities of MASTER

Fifth International Radiative Transfer Modeling Workshop in Bredbeck, July 7 to 10, 2003.

• Development in progress by ISAC-CNR Bologna, IFAC-CNR Florence, ASPER

Main Features:

• Scattering and Polarization model (by Cesare Cecchi Pestellini, he is here!)

• Horizontal gradients• Retrieval of pointing VMR and temperature• Retrieval of horizontal gradient profiles

Fifth International Radiative Transfer Modeling Workshop in Bredbeck, July 7 to 10, 2003.

MARSCHALS’Retrieval Algorithm