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Measurements and modelling of ozone and aerosols in the northern atmosphere

Objective

The primary aim of this programme is the study of stratospheric aerosol and PSCs by means of lidar and backscattersondes. Simultaneous lidar measurements and ozone soundings will allow a statistical study of the correlation between aerosol and PSC dynamics and ozone depletion processes.


For the MOANA experimental campaign the instrumentation already present at the Sadankylä Observatory (67°N, 26°E) of the Finnish Meteorological Institute will be integrated with the following systems and studies:

a) Multispectral depolarisation lidar for measurements of PSCs, aerosols, high cirrus clouds, stratospheric temperature. A new multiwavelength measurement technique should allow to improve the accuracy of the PSC and aerosol particle size determination with respect to the EASOE data analysis.

b) Backscattersonde producing vertical aerosol profiles. They distinguish between stratospheric aerosols and PSCs and also provide some information on aerosol particle size. Such experiments could operate in the cloudy periods when the lidar can not operate and for a few launches simultaneously to the lidar multispectral measurements, thus enabling cross checks on the obtained aerosol profiles and particle size evaluation.

c) Theoretical development of the microphysical model of PSC formation and shape. Application of such models to the measured aerosol loading and use of the Conservative Coordinate Reconstruction Technique to compare measurements carried out at different sites and at different times. This will enable to better understand the condition for PSCs growth.

The other scientific activity which occur in Sodankylä (ozone soundings by means of passive ground based UV Visible spectrometer SAOZ, balloon ozone sonde and PTU soundings), will be beneficial to this programme and will be incorporated for the science development. Specifically the ozone sonde and PTU data, provided by Sodankylä Observatory, are of fundamental importance to this programme.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

NATIONAL RESEARCH COUNCIL OF ITALY
Address
Via Panciatichi 64
50127 Firenze
Italy

Participants (5)

FINNISH METEOROLOGICAL INSTITUTE
Finland
Address
Taehtelaentie 71
99600 Sodankylae
FREIE UNIVERSITAET BERLIN
Germany
Address
Arnimallee 14
14195 Berlin
OBSERVATOIRE CANTONAL DE NEUCHATEL
Switzerland
Address
Avenue De L'observatoire 58
2000 Neuchatel
UNIVERSITE CLAUDE BERNARD LYON 1
France
Address
Boulevard Du 11 Novembre 1918
69622 Villeurbanne
Università degli Studi dell'Aquila
Italy
Address
Via Vetoio 10
67010 Coppito L'aquila