Along or across front survey strategy? An operational example at an unstable front.
We present results of the optimization of near-real time on-board sampling strategy in the Iceland-Faroes oceanic frontal area, based on the outputs of a mesoscale 3D operational data assimilation forecasting experiment. By minimizing a root mean square error cost function, we show that in this exam...
Published in: | Geophysical Research Letters |
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Online Access: | http://nora.nerc.ac.uk/id/eprint/100283/ https://doi.org/10.1029/2002GL015341 |
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ftnerc:oai:nora.nerc.ac.uk:100283 2023-05-15T16:11:16+02:00 Along or across front survey strategy? An operational example at an unstable front. Rixen, M. Allen, J.T. Alderson, S. Cornell, V. Crisp, N. Fielding, S. Mustard, A.T. Pollard, R.T. Popova, E.E. Smeed, D.A. Srokosz, M.A. Barth, A. Beckers, J-M 2003-01-10 http://nora.nerc.ac.uk/id/eprint/100283/ https://doi.org/10.1029/2002GL015341 unknown Rixen, M.; Allen, J.T.; Alderson, S.; Cornell, V.; Crisp, N.; Fielding, S.; Mustard, A.T.; Pollard, R.T.; Popova, E.E. orcid:0000-0002-2012-708X Smeed, D.A. orcid:0000-0003-1740-1778 Srokosz, M.A. orcid:0000-0002-7347-7411 Barth, A.; Beckers, J-M,. 2003 Along or across front survey strategy? An operational example at an unstable front. Geophysical Research Letters, 30 (1). 1017-[17pp]. https://doi.org/10.1029/2002GL015341 <https://doi.org/10.1029/2002GL015341> Publication - Article PeerReviewed 2003 ftnerc https://doi.org/10.1029/2002GL015341 2023-02-04T19:33:25Z We present results of the optimization of near-real time on-board sampling strategy in the Iceland-Faroes oceanic frontal area, based on the outputs of a mesoscale 3D operational data assimilation forecasting experiment. By minimizing a root mean square error cost function, we show that in this example an along-front sampling strategy, i.e. with transects parallel to the front, produces smaller errors in temperature, salinity, nitrate, phytoplankton, and zooplankton fields, as a result of a combination of the direction of the sampling of the front and errors associated with the asynopticy of observations (Doppler effect). This is contrary to the classic across-front sampling strategies that are used in most field experiments reported in the literature, i.e. where transects are perpendicular to the front. A control model shows that at these spatio-temporal scales, the along front sampling strategy is optimal when the frontal instability has sufficiently developed. Article in Journal/Newspaper Faroes Iceland Natural Environment Research Council: NERC Open Research Archive Geophysical Research Letters 30 1 17-1 17-4 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
We present results of the optimization of near-real time on-board sampling strategy in the Iceland-Faroes oceanic frontal area, based on the outputs of a mesoscale 3D operational data assimilation forecasting experiment. By minimizing a root mean square error cost function, we show that in this example an along-front sampling strategy, i.e. with transects parallel to the front, produces smaller errors in temperature, salinity, nitrate, phytoplankton, and zooplankton fields, as a result of a combination of the direction of the sampling of the front and errors associated with the asynopticy of observations (Doppler effect). This is contrary to the classic across-front sampling strategies that are used in most field experiments reported in the literature, i.e. where transects are perpendicular to the front. A control model shows that at these spatio-temporal scales, the along front sampling strategy is optimal when the frontal instability has sufficiently developed. |
format |
Article in Journal/Newspaper |
author |
Rixen, M. Allen, J.T. Alderson, S. Cornell, V. Crisp, N. Fielding, S. Mustard, A.T. Pollard, R.T. Popova, E.E. Smeed, D.A. Srokosz, M.A. Barth, A. Beckers, J-M |
spellingShingle |
Rixen, M. Allen, J.T. Alderson, S. Cornell, V. Crisp, N. Fielding, S. Mustard, A.T. Pollard, R.T. Popova, E.E. Smeed, D.A. Srokosz, M.A. Barth, A. Beckers, J-M Along or across front survey strategy? An operational example at an unstable front. |
author_facet |
Rixen, M. Allen, J.T. Alderson, S. Cornell, V. Crisp, N. Fielding, S. Mustard, A.T. Pollard, R.T. Popova, E.E. Smeed, D.A. Srokosz, M.A. Barth, A. Beckers, J-M |
author_sort |
Rixen, M. |
title |
Along or across front survey strategy? An operational example at an unstable front. |
title_short |
Along or across front survey strategy? An operational example at an unstable front. |
title_full |
Along or across front survey strategy? An operational example at an unstable front. |
title_fullStr |
Along or across front survey strategy? An operational example at an unstable front. |
title_full_unstemmed |
Along or across front survey strategy? An operational example at an unstable front. |
title_sort |
along or across front survey strategy? an operational example at an unstable front. |
publishDate |
2003 |
url |
http://nora.nerc.ac.uk/id/eprint/100283/ https://doi.org/10.1029/2002GL015341 |
genre |
Faroes Iceland |
genre_facet |
Faroes Iceland |
op_relation |
Rixen, M.; Allen, J.T.; Alderson, S.; Cornell, V.; Crisp, N.; Fielding, S.; Mustard, A.T.; Pollard, R.T.; Popova, E.E. orcid:0000-0002-2012-708X Smeed, D.A. orcid:0000-0003-1740-1778 Srokosz, M.A. orcid:0000-0002-7347-7411 Barth, A.; Beckers, J-M,. 2003 Along or across front survey strategy? An operational example at an unstable front. Geophysical Research Letters, 30 (1). 1017-[17pp]. https://doi.org/10.1029/2002GL015341 <https://doi.org/10.1029/2002GL015341> |
op_doi |
https://doi.org/10.1029/2002GL015341 |
container_title |
Geophysical Research Letters |
container_volume |
30 |
container_issue |
1 |
container_start_page |
17-1 |
op_container_end_page |
17-4 |
_version_ |
1765996397804388352 |