Estimates of the Southern Ocean general circulation improved by animal-borne instruments


Contact
Horst.Bornemann [ at ] awi.de

Abstract

Over the last decade, several hundred seals have been equipped with conductivity-temperature-depth sensors in the Southern Ocean for both biological and physical oceanographic studies. A calibrated collection of seal-derived hydrographic data is now available, consisting of more than 165,000 profiles. The value of these hydrographic data within the existing Southern Ocean observing system is demonstrated herein by conducting two state estimation experiments, differing only in the use or not of seal data to constrain the system. Including seal-derived data substantially modifies the estimated surface mixedlayer properties and circulation patterns within and south of the Antarctic Circumpolar Current. Agreement with independent satellite observations of sea ice concentration is improved, especially along the East Antarctic shelf. Instrumented animals efficiently reduce a critical observational gap, and their contribution to monitoring polar climate variability will continue to grow as data accuracy and spatial coverage increase.



Item Type
Article
Authors
Divisions
Primary Division
Programs
Primary Topic
Peer revision
Scopus/ISI peer-reviewed
Publication Status
Published
Eprint ID
33494
DOI 10.1002/2013GL058304

Cite as
Roquet, F. , Wunsch, C. , Forget, G. , Heimbach, P. , Guinet, C. , Reverdin, G. , Charrassin, J. B. , Bailleul, F. , Costa, D. , Hückstädt, L. , Goetz, K. , Kovacs, K. M. , Lydersen, C. , Biuw, M. , Chafik, L. , Nøst, O. A. , Bornemann, H. , Plötz, J. , Bester, M. N. , McIntyre, T. , Muelbert, M. , Hindell, M. , McMahon, C. R. , Williams, G. , Harcourt, R. , Field, I. , Chafik, L. , Nicholls, K. W. , Boehme, L. and Fedak, M. A. (2013): Estimates of the Southern Ocean general circulation improved by animal-borne instruments , Geophysical Research Letters, 40 (23), pp. 6176-6180 . doi: 10.1002/2013GL058304


Download
[img]
Preview
PDF
Roquet-etal_2013.pdf

Download (2MB) | Preview
Cite this document as:

Share


Citation

Research Platforms

Campaigns


Actions
Edit Item Edit Item