This work was carried out under an NERC-funded studentship tied to the COAPEC thematic program, and a CASE studentship award from the British Antarctic Survey. The authors thank the British Antarctic Survey for providing access to the ECMWF ERA-40 data, and for assistance with the tracking scheme from Tom Lachlan-Cope. We would also like to thank Andrew Brooks at the NERC Satellite Receiving Station at Dundee University (Dundee, United Kingdom) who very kindly removed depressions located in the reanalysis pressure data outside of each corresponding satellite pass.
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