Journal article

First quasi-Lagrangian in situ measurements of Antarctic Polar springtime ozone: observed ozone loss rates from the Concordiasi long-duration balloon campaign

R Schofield, LM Avallone, LE Kalnajs, A Hertzog, I Wohltmann, M Rex



We present ozone measurements made using state-of-the-art ultraviolet photometers onboard three long-duration stratospheric balloons launched as part of the Concordiasi campaign in austral spring 2010. Ozone loss rates calculated by matching air parcels sampled at different times and places during the polar spring are in agreement with rates previously derived from ozonesonde measurements, for the vortex average, ranging between 2 and 7 ppbv per sunlit hour or between 25 and 110 ppbv per day. However, the geographical coverage of these long-duration stratospheric balloon platforms provides new insights into the temporal and spatial patterns of ozone loss over Antarctica. Very large ozone los..

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Awarded by European Union (EU) WaVES

Awarded by Australian Antarctic Science Grant

Awarded by Australian Research Councils Centre of Excellence

Awarded by US National Science Foundation

Funding Acknowledgements

Concordiasi is an international project, currently supported by the following agencies: Meteo-France, CNES, CNRS/INSU, NSF, NCAR, University of Wyoming, Purdue University, University of Colorado, the Alfred Wegener Institute, the Met Office, and ECMWF. Concordiasi also benefits from logistic or financial support of operational polar agencies Institut Polaire Francais Paul Emile Victor (IPEV), Programma Nazionale di Ricerche in Antartide (PNRA), the United States Antarctic Program (USAP) and British Antarctic Survey (BAS), and from Baseline Surface Radiation Network (BSRN) measurements at Concordia. Concordiasi is part of The Observing System Research and Predictability Experiment-International Polar Year (THORPEX-IPY) cluster within the International Polar Year effort. The Concordiasi website can be found at The PSC mask data from the CALIPSO instrument were obtained from the NASA Langley Research Center Atmospheric Science Data Center. The Microwave Limb Sounder ClO data were obtained from Nathaniel Livesey. The authors thank ECMWF for providing ERA-Interim data via special project DERESI. RS received funding support for this work from the European Union (EU) WaVES (MIF1-CT-2006-039646) project, Australian Antarctic Science Grant (FoRCES 4012) and the Australian Research Councils Centre of Excellence (CE110001028) scheme. LMA and LEK acknowledge support from the US National Science Foundation under grant ANT-0839017.