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Stratospheric ozone: Halogen Impacts in a Varying Atmosphere

Stratospheric ozone: Halogen Impacts in a Varying Atmosphere

Objective

SHIVA aims to reduce uncertainties in present and future stratospheric halogen loading and ozone depletion resulting from climate feedbacks between emissions and transport of ozone depleting substances (ODS). Of particular relevance will be studies of short and very short-lived substances (VSLS) with climate-sensitive natural emissions. We will perform field studies of ODS production, emission and transport in understudied, but critical, regions of the tropics using ship, aircraft and ground-based instrumentation. We will parameterise potential climate sensitivities of emissions based on inter-dependencies derived from our own field studies, and surveys of ongoing work in this area. We will study the chemical transformation of ODS during transport from the surface to the tropical tropopause layer (TTL), and in the stratosphere, using a combination of aircraft and balloon observations together with process-oriented meso-scale modelling. These investigations will be corroborated by space-based remote sensing of marine phytoplankton biomass as a possible proxy for the ocean-atmosphere flux of ODS. From this a systematic emission inventory of VSLS ODS will be established to allow construction of future-climate scenarios. The impact of climate-sensitive feedbacks between transport and the delivery of ODS to the stratosphere, and their lifetime within it, will be studied using tracer observations and modelling. Further global modelling will assess the contribution of all ODS, including VSLS (which have hitherto normally been excluded from such models) to past, present and future ozone loss. Here, the sensitivity of natural ODS emissions to climate change parameters will be used in combination with standard IPCC climate model scenarios in order to drive measurement-calibrated chemical transport model (CTM) simulations for present and future stratospheric ozone; to better predict the rate, timing and climate-sensitivity of ozone-layer recovery.

Coordinator

RUPRECHT-KARLS-UNIVERSITAET HEIDELBERG

Address

Seminarstrasse 2
69117 Heidelberg

Germany

Activity type

Higher or Secondary Education Establishments

EU Contribution

€ 384 497

Administrative Contact

Karoline Thomas (Ms.)

Participants (13)

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UNIVERSITY OF EAST ANGLIA

United Kingdom

EU Contribution

€ 394 500

JOHANN WOLFGANG GOETHE-UNIVERSITATFRANKFURT AM MAIN

Germany

EU Contribution

€ 271 500

ALFRED-WEGENER-INSTITUT HELMHOLTZ-ZENTRUM FUR POLAR- UND MEERESFORSCHUNG

Germany

EU Contribution

€ 374 000

INSTITUT ROYAL D'AERONOMIE SPATIALEDE BELGIQUE

Belgium

EU Contribution

€ 137 499

THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE

United Kingdom

EU Contribution

€ 252 500

HELMHOLTZ ZENTRUM FUR OZEANFORSCHUNG KIEL

Germany

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

France

EU Contribution

€ 226 500

UNIVERSITY OF LEEDS

United Kingdom

EU Contribution

€ 304 000

NORSK INSTITUTT FOR LUFTFORSKNING STIFTELSE

Norway

EU Contribution

€ 97 500

UNIVERSITAET BREMEN

Germany

EU Contribution

€ 127 500

DEUTSCHES ZENTRUM FUER LUFT - UND RAUMFAHRT EV

Germany

EU Contribution

€ 519 999

UNIVERSITY OF MALAYA

Malaysia

EU Contribution

€ 20 000

LEIBNIZ-INSTITUT FUER MEERESWISSENSCHAFTEN AN DER UNIVERSITAET KIEL

Germany

EU Contribution

€ 390 000

Project information

Grant agreement ID: 226224

Status

Closed project

  • Start date

    1 July 2009

  • End date

    30 June 2013

Funded under:

FP7-ENVIRONMENT

  • Overall budget:

    € 4 748 334

  • EU contribution

    € 3 499 995

Coordinated by:

RUPRECHT-KARLS-UNIVERSITAET HEIDELBERG

Germany

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