Fogt, R.L., Goergens, C.A., Jones, J.M. orcid.org/0000-0003-2892-8647 et al. (4 more authors) (2016) A twentieth century perspective on summer Antarctic pressure change and variability and contributions from tropical SSTs and ozone depletion. Geophysical Research Letters, 44 (19). pp. 9918-9927. ISSN 0094-8276
Abstract
During the late 20th 33 Century, the Antarctic atmospheric circulation has changed and significantly influenced the overall Antarctic climate, through processes including a poleward shift of the circumpolar westerlies. However, little is known about the full spatial pattern of atmospheric pressure over the Antarctic continent prior to 1979. Here we investigate surface pressure changes across the entire Antarctic continent back to 1905 by developing a new summer pressure reconstruction poleward of 60°S. We find that only across East Antarctica are the recent pressures significantly lower than pressures in the early 20th 40 century; we also discern periods of significant positive pressure trends in the early 20th 41 century across the coastal South Atlantic sector of Antarctica. Climate model simulations reveal that both tropical sea surface temperature variability and other radiative forcing mechanisms, in addition to ozone depletion, have played an important role in forcing the recent observed negative trends.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 American Geophysical Union. Reproduced in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Social Sciences (Sheffield) > Department of Geography (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 25 Sep 2017 09:32 |
Last Modified: | 06 Apr 2018 00:38 |
Published Version: | https://doi.org/10.1002/2017GL075079 |
Status: | Published |
Publisher: | American Geophysical Union |
Refereed: | Yes |
Identification Number: | 10.1002/2017GL075079 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:121288 |