Temporal variability in the Antarctic Polar Front (2002–2014)

Freeman, Natalie M.; Lovenduski, Nicole S.; Gent, Peter R.

doi:10.1002/2016jc012145

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i

Temporal variability in the Antarctic Polar Front (2002–2014)

2016
By Freeman, Natalie M. ; Lovenduski, Nicole S. ; Gent, Peter R.
Source: Journal of Geophysical Research: Oceans, 121(10), 7263-7276

[PDF-4.75 MB]

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Details:

Journal Title:

Journal of Geophysical Research: Oceans
Personal Author:

Freeman, Natalie M. ; Lovenduski, Nicole S. ; Gent, Peter R.

Freeman, Natalie M. ; Lovenduski, Nicole S. ; Gent, Peter R. Less -
NOAA Program & Office:

NCEI (National Centers for Environmental Information) ; NESDIS (National Environmental Satellite, Data, and Information Service) ; OAR (Oceanic and Atmospheric Research)

NCEI (National Centers for Environmental Information) ; NESDIS (National Environmental Satellite, Data, and Information Service) ; OAR (Oceanic and Atmospheric Research) Less -
Description:

We investigate intraannual to interannual variability in the Antarctic Polar Front (PF) using weekly PF realizations spanning 2002–2014 (found at doi.pangaea.de/10.1594/PANGAEA.855640). While several PF studies have used gradient maxima in sea surface temperature (SST) or height to define its location, results from this study are based on a PF defined using SST measurements that avoid cloud contamination and the influence of steric sea level change. With a few regional exceptions, we find that the latitudinal position of the PF does not vary seasonally, yet its temperature exhibits a clear seasonal cycle. Consistent with previous studies, the position and intensity of the PF is largely influenced by bathymetry; generally, over steep topography, we find that the front intensifies and interannual variability in its position is low. We also investigate drivers of PF variability in the context of large‐scale climate variability on various spatial and temporal scales, but find that the major modes of Southern Hemisphere climate variability explain only a tiny fraction of the interannual PF variance. Over the study time period, the PF intensifies at nearly all longitudes while exhibiting no discernible meridional displacement in its zonal mean path.
Keywords:

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Earth And Planetary Sciences (miscellaneous) Geochemistry And Petrology Geophysics Oceanography Space And Planetary Science
Source:

Journal of Geophysical Research: Oceans, 121(10), 7263-7276
DOI:

https://doi.org/10.1002/2016jc012145
ISSN:

2169-9275;2169-9291;
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Funding:

Grant no. NA12OAR4310058
Rights Information:

Other
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Library
Main Document Checksum:

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urn:sha-512:6a0bb78c17c2ad0f4a71f1bf6ca16cfbc05f7f76441a2fe75a66ebe8e3623d9fa03200435c8eb4962cc1ca2ba93d188f350395e78d2cae551e19f42a1c5aba36
Download URL:

https://repository.library.noaa.gov/view/noaa/64477/noaa_64477_DS1.pdf
File Type:

Machine readable version (XML)

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