Optimal linear fitting for objective determination of ocean mixed layer depth from glider profiles (Proof)
Journal of Atmospheric and Oceanic Technology, American Meteorological Society The article of record as published may be located at http://dx.doi.org/10.1175/2010JTECHO804.1 A new optimal linear fitting method has been developed to determine mixed layer depth from profile data. This methodology includ...
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ftnavalpschool:oai:calhoun.nps.edu:10945/36144 2024-06-09T07:48:13+00:00 Optimal linear fitting for objective determination of ocean mixed layer depth from glider profiles (Proof) Fan, C.W. Chu, Peter C. Oceanography 2010 application/pdf https://hdl.handle.net/10945/36144 unknown Chu, P.C., and C.W. Fan, 2010: Optimal linear fitting for objective determination of ocean mixed layer depth from glider profiles. Journal of Atmospheric and Oceanic Technology, American Meteorological Society, 27, 1893-1898 (paper download). https://hdl.handle.net/10945/36144 This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. Article 2010 ftnavalpschool 2024-05-15T00:44:17Z Journal of Atmospheric and Oceanic Technology, American Meteorological Society The article of record as published may be located at http://dx.doi.org/10.1175/2010JTECHO804.1 A new optimal linear fitting method has been developed to determine mixed layer depth from profile data. This methodology includes three steps: 1) fitting the profile data from the first point near the surface to a depth using a linear polynomial, 2) computing the error ratio of absolute bias of few data points below that depth versus the root-mean-square error of data points from the surface to that depth between observed and fitted data, and 3) finding the depth (i.e., the mixed layer depth) with maximum error ratio. Temperature profiles in the western North Atlantic Ocean over 14 November–5 December 2007, collected from two gliders (Seagliders) deployed by the Naval Oceanographic Office (NAVOCEANO), are used to demonstrate the capability of this method. The mean quality index (1.0 for perfect determination) for determining mixed layer depth is greater than 0.97, which is much higher than the critical value of 0.8 for well-defined mixed layer depth with that index. Article in Journal/Newspaper North Atlantic Naval Postgraduate School: Calhoun |
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Open Polar |
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Naval Postgraduate School: Calhoun |
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ftnavalpschool |
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description |
Journal of Atmospheric and Oceanic Technology, American Meteorological Society The article of record as published may be located at http://dx.doi.org/10.1175/2010JTECHO804.1 A new optimal linear fitting method has been developed to determine mixed layer depth from profile data. This methodology includes three steps: 1) fitting the profile data from the first point near the surface to a depth using a linear polynomial, 2) computing the error ratio of absolute bias of few data points below that depth versus the root-mean-square error of data points from the surface to that depth between observed and fitted data, and 3) finding the depth (i.e., the mixed layer depth) with maximum error ratio. Temperature profiles in the western North Atlantic Ocean over 14 November–5 December 2007, collected from two gliders (Seagliders) deployed by the Naval Oceanographic Office (NAVOCEANO), are used to demonstrate the capability of this method. The mean quality index (1.0 for perfect determination) for determining mixed layer depth is greater than 0.97, which is much higher than the critical value of 0.8 for well-defined mixed layer depth with that index. |
author2 |
Oceanography |
format |
Article in Journal/Newspaper |
author |
Fan, C.W. Chu, Peter C. |
spellingShingle |
Fan, C.W. Chu, Peter C. Optimal linear fitting for objective determination of ocean mixed layer depth from glider profiles (Proof) |
author_facet |
Fan, C.W. Chu, Peter C. |
author_sort |
Fan, C.W. |
title |
Optimal linear fitting for objective determination of ocean mixed layer depth from glider profiles (Proof) |
title_short |
Optimal linear fitting for objective determination of ocean mixed layer depth from glider profiles (Proof) |
title_full |
Optimal linear fitting for objective determination of ocean mixed layer depth from glider profiles (Proof) |
title_fullStr |
Optimal linear fitting for objective determination of ocean mixed layer depth from glider profiles (Proof) |
title_full_unstemmed |
Optimal linear fitting for objective determination of ocean mixed layer depth from glider profiles (Proof) |
title_sort |
optimal linear fitting for objective determination of ocean mixed layer depth from glider profiles (proof) |
publishDate |
2010 |
url |
https://hdl.handle.net/10945/36144 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Chu, P.C., and C.W. Fan, 2010: Optimal linear fitting for objective determination of ocean mixed layer depth from glider profiles. Journal of Atmospheric and Oceanic Technology, American Meteorological Society, 27, 1893-1898 (paper download). https://hdl.handle.net/10945/36144 |
op_rights |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
_version_ |
1801379846774849536 |