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Antarctic Peninsula sea levels: a real-time system for monitoring Drake Passage transport

Published online by Cambridge University Press:  24 August 2006

P.L. Woodworth ,
C.W. Hughes ,
D.L. Blackman ,
V.N. Stepanov ,
S.J. Holgate ,
P.R. Foden ,
J.P. Pugh ,
S. Mack ,
G.W. Hargreaves  and
M.P. Meredith
...Show all authors
P.L. Woodworth
Affiliation:
Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool L3 5DA, UK
C.W. Hughes
Affiliation:
Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool L3 5DA, UK
D.L. Blackman
Affiliation:
Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool L3 5DA, UK
V.N. Stepanov
Affiliation:
Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool L3 5DA, UK
S.J. Holgate
Affiliation:
Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool L3 5DA, UK
P.R. Foden
Affiliation:
Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool L3 5DA, UK
J.P. Pugh
Affiliation:
Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool L3 5DA, UK
S. Mack
Affiliation:
Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool L3 5DA, UK
G.W. Hargreaves
Affiliation:
Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool L3 5DA, UK
M.P. Meredith
Affiliation:
British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge CB3 0ET, UK
G. Milinevsky
Affiliation:
National Antarctic Scientific Center of Ukraine, 16, Tarasa Shevchenka blvd., 01601 Kyiv, Ukraine
J.J. Fierro Contreras
Affiliation:
Servicio Hidrografico y Oceanografico, Errazuriz 254, Playa Ancha City, Valparaiso, Chile
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Abstract

Sub-surface pressure (SSP) data from tide gauges at three bases on the Pacific coast of the Antarctic Peninsula, together with SSP information from a bottom pressure recorder deployed on the south side of the Drake Passage, have been used to study the relationships between SSP, Drake Passage transport, and the strength of Southern Ocean zonal winds as represented by the Southern Annular Mode. High correlations were obtained between all parameters, confirming results obtained previously with independent data sets, and demonstrating the value of information from the permanent Rothera base, the southern-most site considered. These are important findings with regard to the design, installation and maintenance of observation networks in Antarctica. In particular, they provide the necessary justification for Antarctic Peninsula tide gauge infrastructure investment in the lead up to International Polar Year. Data delivery from Rothera and Vernadsky is currently being improved and should soon enable the first near real-time system for monitoring Drake Passage transport variability on intraseasonal timescales, an essential component of a Southern Ocean Observing System.

Keywords

bottom pressure recordersInternational Polar Yearocean circulation variabilitySouthern Annular Modetide gauges
Type
PHYSICAL SCIENCES
Information
Antarctic Science , Volume 18 , Issue 3 , September 2006 , pp. 429 - 436
Copyright
© Antarctic Science Ltd 2006

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