Interannual-decadal variability of wintertime mixed layer depths in the North Pacific detected by an ensemble of ocean syntheses
The interannual-decadal variability of the wintertime mixed layer depths (MLDs) over the North Pacific is investigated from an empirical orthogonal function (EOF) analysis of an ensemble of global ocean reanalyses. The first leading EOF mode represents the interannual MLD anomalies centered in the e...
Published in: | Climate Dynamics |
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Springer Berlin Heidelberg
2016
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Online Access: | http://hdl.handle.net/1721.1/104789 |
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ftmit:oai:dspace.mit.edu:1721.1/104789 2023-06-11T04:03:20+02:00 Interannual-decadal variability of wintertime mixed layer depths in the North Pacific detected by an ensemble of ocean syntheses Toyoda, Takahiro Fujii, Yosuke Kuragano, Tsurane Kosugi, Naohiro Sasano, Daisuke Kamachi, Masafumi Ishikawa, Yoichi Masuda, Shuhei Sato, Kanako Awaji, Toshiyuki Hernandez, Fabrice Ferry, Nicolas Guinehut, Stéphanie Martin, Matthew Andrew Peterson, K. Good, Simon A. Valdivieso, Maria Haines, Keith Storto, Andrea Masina, Simona Köhl, Armin Yin, Yonghong Shi, Li Alves, Oscar Smith, Gregory Chang, You-Soon Vernieres, Guillaume Wang, Xiaochun Forget, Gael Heimbach, Patrick Wang, Ou Fukumori, Ichiro Lee, Tong Zuo, Hao Balmaseda, Magdalena Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Heimbach, Patrick Forget, Gael 2016-08-18T15:25:23Z application/pdf http://hdl.handle.net/1721.1/104789 en eng Springer Berlin Heidelberg http://dx.doi.org/10.1007/s00382-015-2762-3 Climate Dynamics 0930-7575 1432-0894 http://hdl.handle.net/1721.1/104789 Toyoda, Takahiro et al. “Interannual-Decadal Variability of Wintertime Mixed Layer Depths in the North Pacific Detected by an Ensemble of Ocean Syntheses.” Climate Dynamics (2015): n. pag. orcid:0000-0003-3925-6161 Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Springer-Verlag Berlin Heidelberg Springer Berlin Heidelberg Article http://purl.org/eprint/type/JournalArticle 2016 ftmit https://doi.org/10.1007/s00382-015-2762-3 2023-05-29T08:29:55Z The interannual-decadal variability of the wintertime mixed layer depths (MLDs) over the North Pacific is investigated from an empirical orthogonal function (EOF) analysis of an ensemble of global ocean reanalyses. The first leading EOF mode represents the interannual MLD anomalies centered in the eastern part of the central mode water formation region in phase opposition with those in the eastern subtropics and the central Alaskan Gyre. This first EOF mode is highly correlated with the Pacific decadal oscillation index on both the interannual and decadal time scales. The second leading EOF mode represents the MLD variability in the subtropical mode water (STMW) formation region and has a good correlation with the wintertime West Pacific (WP) index with time lag of 3 years, suggesting the importance of the oceanic dynamical response to the change in the surface wind field associated with the meridional shifts of the Aleutian Low. The above MLD variabilities are in basic agreement with previous observational and modeling findings. Moreover the reanalysis ensemble provides uncertainty estimates. The interannual MLD anomalies in the first and second EOF modes are consistently represented by the individual reanalyses and the amplitudes of the variabilities generally exceed the ensemble spread of the reanalyses. Besides, the resulting MLD variability indices, spanning the 1948–2012 period, should be helpful for characterizing the North Pacific climate variability. In particular, a 6-year oscillation including the WP teleconnection pattern in the atmosphere and the oceanic MLD variability in the STMW formation region is first detected. Japan. Ministry of Education, Culture, Sports, Science and Technology. Data Integration and Analysis System Japan. Ministry of Education, Culture, Sports, Science and Technology. Data Integration and Analysis System Great Britain. Department of Energy and Climate Change Great Britain. Department for Environment, Food & Rural Affairs Met Office Hadley Centre Climate ... Article in Journal/Newspaper aleutian low DSpace@MIT (Massachusetts Institute of Technology) Pacific Climate Dynamics 49 3 891 907 |
institution |
Open Polar |
collection |
DSpace@MIT (Massachusetts Institute of Technology) |
op_collection_id |
ftmit |
language |
English |
description |
The interannual-decadal variability of the wintertime mixed layer depths (MLDs) over the North Pacific is investigated from an empirical orthogonal function (EOF) analysis of an ensemble of global ocean reanalyses. The first leading EOF mode represents the interannual MLD anomalies centered in the eastern part of the central mode water formation region in phase opposition with those in the eastern subtropics and the central Alaskan Gyre. This first EOF mode is highly correlated with the Pacific decadal oscillation index on both the interannual and decadal time scales. The second leading EOF mode represents the MLD variability in the subtropical mode water (STMW) formation region and has a good correlation with the wintertime West Pacific (WP) index with time lag of 3 years, suggesting the importance of the oceanic dynamical response to the change in the surface wind field associated with the meridional shifts of the Aleutian Low. The above MLD variabilities are in basic agreement with previous observational and modeling findings. Moreover the reanalysis ensemble provides uncertainty estimates. The interannual MLD anomalies in the first and second EOF modes are consistently represented by the individual reanalyses and the amplitudes of the variabilities generally exceed the ensemble spread of the reanalyses. Besides, the resulting MLD variability indices, spanning the 1948–2012 period, should be helpful for characterizing the North Pacific climate variability. In particular, a 6-year oscillation including the WP teleconnection pattern in the atmosphere and the oceanic MLD variability in the STMW formation region is first detected. Japan. Ministry of Education, Culture, Sports, Science and Technology. Data Integration and Analysis System Japan. Ministry of Education, Culture, Sports, Science and Technology. Data Integration and Analysis System Great Britain. Department of Energy and Climate Change Great Britain. Department for Environment, Food & Rural Affairs Met Office Hadley Centre Climate ... |
author2 |
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Heimbach, Patrick Forget, Gael |
format |
Article in Journal/Newspaper |
author |
Toyoda, Takahiro Fujii, Yosuke Kuragano, Tsurane Kosugi, Naohiro Sasano, Daisuke Kamachi, Masafumi Ishikawa, Yoichi Masuda, Shuhei Sato, Kanako Awaji, Toshiyuki Hernandez, Fabrice Ferry, Nicolas Guinehut, Stéphanie Martin, Matthew Andrew Peterson, K. Good, Simon A. Valdivieso, Maria Haines, Keith Storto, Andrea Masina, Simona Köhl, Armin Yin, Yonghong Shi, Li Alves, Oscar Smith, Gregory Chang, You-Soon Vernieres, Guillaume Wang, Xiaochun Forget, Gael Heimbach, Patrick Wang, Ou Fukumori, Ichiro Lee, Tong Zuo, Hao Balmaseda, Magdalena |
spellingShingle |
Toyoda, Takahiro Fujii, Yosuke Kuragano, Tsurane Kosugi, Naohiro Sasano, Daisuke Kamachi, Masafumi Ishikawa, Yoichi Masuda, Shuhei Sato, Kanako Awaji, Toshiyuki Hernandez, Fabrice Ferry, Nicolas Guinehut, Stéphanie Martin, Matthew Andrew Peterson, K. Good, Simon A. Valdivieso, Maria Haines, Keith Storto, Andrea Masina, Simona Köhl, Armin Yin, Yonghong Shi, Li Alves, Oscar Smith, Gregory Chang, You-Soon Vernieres, Guillaume Wang, Xiaochun Forget, Gael Heimbach, Patrick Wang, Ou Fukumori, Ichiro Lee, Tong Zuo, Hao Balmaseda, Magdalena Interannual-decadal variability of wintertime mixed layer depths in the North Pacific detected by an ensemble of ocean syntheses |
author_facet |
Toyoda, Takahiro Fujii, Yosuke Kuragano, Tsurane Kosugi, Naohiro Sasano, Daisuke Kamachi, Masafumi Ishikawa, Yoichi Masuda, Shuhei Sato, Kanako Awaji, Toshiyuki Hernandez, Fabrice Ferry, Nicolas Guinehut, Stéphanie Martin, Matthew Andrew Peterson, K. Good, Simon A. Valdivieso, Maria Haines, Keith Storto, Andrea Masina, Simona Köhl, Armin Yin, Yonghong Shi, Li Alves, Oscar Smith, Gregory Chang, You-Soon Vernieres, Guillaume Wang, Xiaochun Forget, Gael Heimbach, Patrick Wang, Ou Fukumori, Ichiro Lee, Tong Zuo, Hao Balmaseda, Magdalena |
author_sort |
Toyoda, Takahiro |
title |
Interannual-decadal variability of wintertime mixed layer depths in the North Pacific detected by an ensemble of ocean syntheses |
title_short |
Interannual-decadal variability of wintertime mixed layer depths in the North Pacific detected by an ensemble of ocean syntheses |
title_full |
Interannual-decadal variability of wintertime mixed layer depths in the North Pacific detected by an ensemble of ocean syntheses |
title_fullStr |
Interannual-decadal variability of wintertime mixed layer depths in the North Pacific detected by an ensemble of ocean syntheses |
title_full_unstemmed |
Interannual-decadal variability of wintertime mixed layer depths in the North Pacific detected by an ensemble of ocean syntheses |
title_sort |
interannual-decadal variability of wintertime mixed layer depths in the north pacific detected by an ensemble of ocean syntheses |
publisher |
Springer Berlin Heidelberg |
publishDate |
2016 |
url |
http://hdl.handle.net/1721.1/104789 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
aleutian low |
genre_facet |
aleutian low |
op_source |
Springer Berlin Heidelberg |
op_relation |
http://dx.doi.org/10.1007/s00382-015-2762-3 Climate Dynamics 0930-7575 1432-0894 http://hdl.handle.net/1721.1/104789 Toyoda, Takahiro et al. “Interannual-Decadal Variability of Wintertime Mixed Layer Depths in the North Pacific Detected by an Ensemble of Ocean Syntheses.” Climate Dynamics (2015): n. pag. orcid:0000-0003-3925-6161 |
op_rights |
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Springer-Verlag Berlin Heidelberg |
op_doi |
https://doi.org/10.1007/s00382-015-2762-3 |
container_title |
Climate Dynamics |
container_volume |
49 |
container_issue |
3 |
container_start_page |
891 |
op_container_end_page |
907 |
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1768378771476316160 |