Spatial–Temporal Variability of the Calculated Characteristics of the Ocean in the Arctic Zone of Russia by Using the NEMO Model with Altimetry Data Assimilation
The spatial–temporal variability of the calculated characteristics of the ocean in the Arctic zone of Russia is studied. In this study, the known hydrodynamic model of the ocean Nucleus for European Modelling of the Ocean (NEMO) is used with assimilation of observation data on the sea surface height...
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ftdoajarticles:oai:doaj.org/article:fc179b3678b9447888a89c1050d86b69 2023-05-15T14:50:24+02:00 Spatial–Temporal Variability of the Calculated Characteristics of the Ocean in the Arctic Zone of Russia by Using the NEMO Model with Altimetry Data Assimilation Konstantin Belyaev Andrey Kuleshov Ilya Smirnov 2020-09-01T00:00:00Z https://doi.org/10.3390/jmse8100753 https://doaj.org/article/fc179b3678b9447888a89c1050d86b69 EN eng MDPI AG https://www.mdpi.com/2077-1312/8/10/753 https://doaj.org/toc/2077-1312 doi:10.3390/jmse8100753 2077-1312 https://doaj.org/article/fc179b3678b9447888a89c1050d86b69 Journal of Marine Science and Engineering, Vol 8, Iss 753, p 753 (2020) model of ocean circulation NEMO GKF data assimilation method Arctic zone of Russia Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 article 2020 ftdoajarticles https://doi.org/10.3390/jmse8100753 2022-12-31T07:36:22Z The spatial–temporal variability of the calculated characteristics of the ocean in the Arctic zone of Russia is studied. In this study, the known hydrodynamic model of the ocean Nucleus for European Modelling of the Ocean (NEMO) is used with assimilation of observation data on the sea surface height taken from the Archiving, Validating and Interpolation Satellite Observation (AVISO) archive. We use the Generalized Kalman filter (GKF) method, developed earlier by the authors of this study, in conjunction with the method of decomposition of symmetric matrices into empirical orthogonal functions (EOF, Karhunen–Loeve decomposition). The investigations are focused mostly on the northern seas of Russia. The main characteristics of the ocean, such as the current velocity, sea surface height, and sea surface temperature are calculated with data assimilation (DA) and without DA (the control calculation). The calculation results are analyzed and their spatial–temporal variability over a time period of 14 days is studied. It is shown that the main spatial variability of characteristics after DA is in good agreement with the localization of currents in the North Atlantic and in the Arctic zone of Russia. The contribution of each of the eigenvectors and eigenvalues of the covariation matrix to the spatial–temporal variability of the calculated characteristics is shown by using the EOF analysis. Article in Journal/Newspaper Arctic North Atlantic Directory of Open Access Journals: DOAJ Articles Arctic Journal of Marine Science and Engineering 8 10 753 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
model of ocean circulation NEMO GKF data assimilation method Arctic zone of Russia Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
spellingShingle |
model of ocean circulation NEMO GKF data assimilation method Arctic zone of Russia Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Konstantin Belyaev Andrey Kuleshov Ilya Smirnov Spatial–Temporal Variability of the Calculated Characteristics of the Ocean in the Arctic Zone of Russia by Using the NEMO Model with Altimetry Data Assimilation |
topic_facet |
model of ocean circulation NEMO GKF data assimilation method Arctic zone of Russia Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
description |
The spatial–temporal variability of the calculated characteristics of the ocean in the Arctic zone of Russia is studied. In this study, the known hydrodynamic model of the ocean Nucleus for European Modelling of the Ocean (NEMO) is used with assimilation of observation data on the sea surface height taken from the Archiving, Validating and Interpolation Satellite Observation (AVISO) archive. We use the Generalized Kalman filter (GKF) method, developed earlier by the authors of this study, in conjunction with the method of decomposition of symmetric matrices into empirical orthogonal functions (EOF, Karhunen–Loeve decomposition). The investigations are focused mostly on the northern seas of Russia. The main characteristics of the ocean, such as the current velocity, sea surface height, and sea surface temperature are calculated with data assimilation (DA) and without DA (the control calculation). The calculation results are analyzed and their spatial–temporal variability over a time period of 14 days is studied. It is shown that the main spatial variability of characteristics after DA is in good agreement with the localization of currents in the North Atlantic and in the Arctic zone of Russia. The contribution of each of the eigenvectors and eigenvalues of the covariation matrix to the spatial–temporal variability of the calculated characteristics is shown by using the EOF analysis. |
format |
Article in Journal/Newspaper |
author |
Konstantin Belyaev Andrey Kuleshov Ilya Smirnov |
author_facet |
Konstantin Belyaev Andrey Kuleshov Ilya Smirnov |
author_sort |
Konstantin Belyaev |
title |
Spatial–Temporal Variability of the Calculated Characteristics of the Ocean in the Arctic Zone of Russia by Using the NEMO Model with Altimetry Data Assimilation |
title_short |
Spatial–Temporal Variability of the Calculated Characteristics of the Ocean in the Arctic Zone of Russia by Using the NEMO Model with Altimetry Data Assimilation |
title_full |
Spatial–Temporal Variability of the Calculated Characteristics of the Ocean in the Arctic Zone of Russia by Using the NEMO Model with Altimetry Data Assimilation |
title_fullStr |
Spatial–Temporal Variability of the Calculated Characteristics of the Ocean in the Arctic Zone of Russia by Using the NEMO Model with Altimetry Data Assimilation |
title_full_unstemmed |
Spatial–Temporal Variability of the Calculated Characteristics of the Ocean in the Arctic Zone of Russia by Using the NEMO Model with Altimetry Data Assimilation |
title_sort |
spatial–temporal variability of the calculated characteristics of the ocean in the arctic zone of russia by using the nemo model with altimetry data assimilation |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/jmse8100753 https://doaj.org/article/fc179b3678b9447888a89c1050d86b69 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic |
genre_facet |
Arctic North Atlantic |
op_source |
Journal of Marine Science and Engineering, Vol 8, Iss 753, p 753 (2020) |
op_relation |
https://www.mdpi.com/2077-1312/8/10/753 https://doaj.org/toc/2077-1312 doi:10.3390/jmse8100753 2077-1312 https://doaj.org/article/fc179b3678b9447888a89c1050d86b69 |
op_doi |
https://doi.org/10.3390/jmse8100753 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
8 |
container_issue |
10 |
container_start_page |
753 |
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1766321434259357696 |