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European Arctic stratospheric ozone experiment : EASOE modelling

Objective

The primary objectives of this measurement campaign are: to study the processes of denitrification and dehydration; to search for evidence of photochemical destruction of ozone; to study the evolution of the Arctic vortex during the entire measurement period; and to study the processes by which chemically perturbed air is moved southward.

The European Arctic stratospheric ozone experiment (EASOE) will take place between November 1991 and March 1992. A variety of physical and chemical measurements of the northern hemisphere lower stratosphere will be made from the ground, from large and small balloons and from aircraft. Supporting theoretical analyses will be carried out.

During EASOE the following tasks will be accomplished.
Ozone concentration profiles will be measured using ozone sondes at 18 sites.
Ground based measurements will be made especially for EASOE at 20 northern hemisphere sites. Measurements will include ozone, nitrogen dioxide, hydrogen nitrate, bromine oxide, chlorine oxide, hydrogen chloride, hydrogen fluoride, temperature and polar stratospheric clouds.
It is planned to launch 39 stratospheric balloons from ESRANGE, Kiruna. These will carry scientific payloads to monitor the lower stratosphere making measurements of many chemical constitutents (ozone, nitrogen dioxide, hydrogen chloride, bromine oxide, chlorine oxide, methane, etc) as well as of temperature and polar stratospheric clouds.

All data obtained during the operational phase of EASOE (1 November 1991 until 31 March 1992) will be reported to the EASOE data centre at Nilu in Norway in preliminary form. Thereafter, necessary corrections will be reported during the period of data evaluation and interpretation.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

University of Cambridge
Address
Lensfield Road
CB2 1EW Cambridge
United Kingdom

Participants (8)

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
France
Address
Avenue Gustave Coriolis 42, C.n.r. Mtttorologique
31057 Toulouse
ENGINEERING AND PHYSICAL SCIENCES RESEARCH COUNCIL
United Kingdom
Address
North Star Avenue
SN2 1ET Swindon
FREIE UNIVERSITAET BERLIN
Germany
Address
Carl-heinrich-becker-weg 6-10
12165 Berlin
NATURAL ENVIRONMENT RESEARCH COUNCIL
United Kingdom
Address
Madingley Road, High Cross
CB3 0ET Cambridge
NORWEGIAN INSTITUTE FOR AIR RESEARCH
Norway
Address
Instituttveien 18
2027 Kjeller
NPL Management Ltd.
United Kingdom
Address
Queens Road
TW11 0LW Teddington
UNIVERSITY COLLEGE OF WALES ABERYSTWYTH
United Kingdom
Address
Penglais Campus, Cerediglon
SY23 3BZ Aberystwyth
Università degli Studi dell'Aquila
Italy
Address
Via Vetoio 10
67010 Coppito L'aquila