A Steady Regime of Volume and Heat Transports in the Eastern Arctic Ocean in the Early 21st Century
Mooring observations in the eastern Eurasian Basin of the Arctic Ocean showed that mean 2013–2018 along-slope volume and heat (calculated relative to the freezing temperature) transports in the upper 800 m were 4.8 ± 0.1 Sv (1 Sv = 106 m3/s) and 34.8 ± 0.6 TW, respectively. Volume and heat transport...
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| Format: | Article |
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Frontiers Media S.A.
2021-08-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2021.705608/full |
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| author | A. V. Pnyushkov I. V. Polyakov I. V. Polyakov G. V. Alekseev I. M. Ashik T. M. Baumann E. C. Carmack V. V. Ivanov V. V. Ivanov R. Rember |
| author_facet | A. V. Pnyushkov I. V. Polyakov I. V. Polyakov G. V. Alekseev I. M. Ashik T. M. Baumann E. C. Carmack V. V. Ivanov V. V. Ivanov R. Rember |
| author_sort | A. V. Pnyushkov |
| collection | DOAJ |
| description | Mooring observations in the eastern Eurasian Basin of the Arctic Ocean showed that mean 2013–2018 along-slope volume and heat (calculated relative to the freezing temperature) transports in the upper 800 m were 4.8 ± 0.1 Sv (1 Sv = 106 m3/s) and 34.8 ± 0.6 TW, respectively. Volume and heat transports within the Atlantic Water (AW) layer (∼150–800 m) in 2013–2018 lacked significant temporal shifts at annual and longer time scales: averaged over the two periods of mooring deployment in 2013–2015 and 2015–2018, volume transports were 3.1 ± 0.1 Sv, while AW heat transports were 31.3 ± 1.0 TW and 34.8 ± 0.8 TW. Moreover, the reconstructed AW volume transports over longer, 2003–2018, period of time showed strong interannual variations but lacked a statistically significant trend. However, we found a weak positive trend of 0.08 ± 0.07 Sv/year in the barotropic AW volume transport estimated using dynamic ocean topography (DOT) measurements in 2003–2014 – the longest period spanned by the DOT dataset. Vertical coherence of 2013–2018 transports in the halocline (70–140 m) and AW (∼150–800 m) layers was high, suggesting the essential role of the barotropic forcing in constraining along-slope transports. Quantitative estimates of transports and their variability discussed in this study help identify the role of atlantification in critical changes of the eastern Arctic Ocean. |
| first_indexed | 2024-12-14T16:11:33Z |
| format | Article |
| id | doaj.art-30e1c622c05f44f08c5e9dce0e5d5ceb |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-12-14T16:11:33Z |
| publishDate | 2021-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-30e1c622c05f44f08c5e9dce0e5d5ceb2022-12-21T22:54:58ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452021-08-01810.3389/fmars.2021.705608705608A Steady Regime of Volume and Heat Transports in the Eastern Arctic Ocean in the Early 21st CenturyA. V. Pnyushkov0I. V. Polyakov1I. V. Polyakov2G. V. Alekseev3I. M. Ashik4T. M. Baumann5E. C. Carmack6V. V. Ivanov7V. V. Ivanov8R. Rember9International Arctic Research Center, University of Alaska Fairbanks, Fairbanks, AK, United StatesInternational Arctic Research Center and College of Natural Science and Mathematics, University of Alaska Fairbanks, Fairbanks, AK, United StatesFinnish Meteorological Institute, Helsinki, FinlandArctic and Antarctic Research Institute, Saint Petersburg, RussiaArctic and Antarctic Research Institute, Saint Petersburg, RussiaGeophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, NorwayFisheries and Oceans Canada, Institute of Ocean Sciences, Sidney, BC, CanadaArctic and Antarctic Research Institute, Saint Petersburg, RussiaLomonosov Moscow State University, Moscow, RussiaInternational Arctic Research Center, University of Alaska Fairbanks, Fairbanks, AK, United StatesMooring observations in the eastern Eurasian Basin of the Arctic Ocean showed that mean 2013–2018 along-slope volume and heat (calculated relative to the freezing temperature) transports in the upper 800 m were 4.8 ± 0.1 Sv (1 Sv = 106 m3/s) and 34.8 ± 0.6 TW, respectively. Volume and heat transports within the Atlantic Water (AW) layer (∼150–800 m) in 2013–2018 lacked significant temporal shifts at annual and longer time scales: averaged over the two periods of mooring deployment in 2013–2015 and 2015–2018, volume transports were 3.1 ± 0.1 Sv, while AW heat transports were 31.3 ± 1.0 TW and 34.8 ± 0.8 TW. Moreover, the reconstructed AW volume transports over longer, 2003–2018, period of time showed strong interannual variations but lacked a statistically significant trend. However, we found a weak positive trend of 0.08 ± 0.07 Sv/year in the barotropic AW volume transport estimated using dynamic ocean topography (DOT) measurements in 2003–2014 – the longest period spanned by the DOT dataset. Vertical coherence of 2013–2018 transports in the halocline (70–140 m) and AW (∼150–800 m) layers was high, suggesting the essential role of the barotropic forcing in constraining along-slope transports. Quantitative estimates of transports and their variability discussed in this study help identify the role of atlantification in critical changes of the eastern Arctic Ocean.https://www.frontiersin.org/articles/10.3389/fmars.2021.705608/fulltransportsArctic Oceanmooringsboundary currentoceanographic observations |
| spellingShingle | A. V. Pnyushkov I. V. Polyakov I. V. Polyakov G. V. Alekseev I. M. Ashik T. M. Baumann E. C. Carmack V. V. Ivanov V. V. Ivanov R. Rember A Steady Regime of Volume and Heat Transports in the Eastern Arctic Ocean in the Early 21st Century Frontiers in Marine Science transports Arctic Ocean moorings boundary current oceanographic observations |
| title | A Steady Regime of Volume and Heat Transports in the Eastern Arctic Ocean in the Early 21st Century |
| title_full | A Steady Regime of Volume and Heat Transports in the Eastern Arctic Ocean in the Early 21st Century |
| title_fullStr | A Steady Regime of Volume and Heat Transports in the Eastern Arctic Ocean in the Early 21st Century |
| title_full_unstemmed | A Steady Regime of Volume and Heat Transports in the Eastern Arctic Ocean in the Early 21st Century |
| title_short | A Steady Regime of Volume and Heat Transports in the Eastern Arctic Ocean in the Early 21st Century |
| title_sort | steady regime of volume and heat transports in the eastern arctic ocean in the early 21st century |
| topic | transports Arctic Ocean moorings boundary current oceanographic observations |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2021.705608/full |
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