An Evaluation of the Large-Scale Implementation of Ocean Thermal Energy Conversion (OTEC) Using an Ocean General Circulation Model with Low-Complexity Atmospheric Feedback Effects
Previous investigations of the large-scale deployment of Ocean Thermal Energy Conversions (OTEC) systems are extended by allowing some atmospheric feedback in an ocean general circulation model. A modified ocean-atmosphere thermal boundary condition is used where relaxation corresponds to atmospheri...
Published in: | Journal of Marine Science and Engineering |
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Online Access: | http://www.osti.gov/servlets/purl/1507789 https://www.osti.gov/biblio/1507789 https://doi.org/10.3390/jmse6010012 |
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ftosti:oai:osti.gov:1507789 2023-07-30T03:59:21+02:00 An Evaluation of the Large-Scale Implementation of Ocean Thermal Energy Conversion (OTEC) Using an Ocean General Circulation Model with Low-Complexity Atmospheric Feedback Effects Jia, Yanli Nihous, Gérard Rajagopalan, Krishnakumar 2023-06-29 application/pdf http://www.osti.gov/servlets/purl/1507789 https://www.osti.gov/biblio/1507789 https://doi.org/10.3390/jmse6010012 unknown http://www.osti.gov/servlets/purl/1507789 https://www.osti.gov/biblio/1507789 https://doi.org/10.3390/jmse6010012 doi:10.3390/jmse6010012 16 TIDAL AND WAVE POWER 2023 ftosti https://doi.org/10.3390/jmse6010012 2023-07-11T09:32:45Z Previous investigations of the large-scale deployment of Ocean Thermal Energy Conversions (OTEC) systems are extended by allowing some atmospheric feedback in an ocean general circulation model. A modified ocean-atmosphere thermal boundary condition is used where relaxation corresponds to atmospheric longwave radiation to space, and an additional term expresses horizontal atmospheric transport. This produces lower steady-state OTEC power maxima (8 to 10.2 TW instead of 14.1 TW for global OTEC scenarios, and 7.2 to 9.3 TW instead of 11.9 TW for OTEC implementation within 100 km of coastlines). When power production peaks, power intensity remains practically unchanged, at 0.2 TW per Sverdrup of OTEC deep cold seawater, suggesting a similar degradation of the OTEC thermal resource. Large-scale environmental effects include surface cooling in low latitudes and warming elsewhere, with a net heat intake within the water column. These changes develop rapidly from the propagation of Kelvin and Rossby waves, and ocean current advection. Two deep circulation cells are generated in the Atlantic and Indo-Pacific basins. The Atlantic Meridional Overturning Circulation (AMOC) is reinforced while an AMOC-like feature appears in the North Pacific, with deep convective winter events at high latitudes. Transport between the Indo-Pacific and the Southern Ocean is strengthened, with impacts on the Atlantic via the Antarctic Circumpolar Current (ACC). Other/Unknown Material Antarc* Antarctic Southern Ocean SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Antarctic Southern Ocean The Antarctic Pacific Journal of Marine Science and Engineering 6 1 12 |
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Open Polar |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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ftosti |
language |
unknown |
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16 TIDAL AND WAVE POWER |
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16 TIDAL AND WAVE POWER Jia, Yanli Nihous, Gérard Rajagopalan, Krishnakumar An Evaluation of the Large-Scale Implementation of Ocean Thermal Energy Conversion (OTEC) Using an Ocean General Circulation Model with Low-Complexity Atmospheric Feedback Effects |
topic_facet |
16 TIDAL AND WAVE POWER |
description |
Previous investigations of the large-scale deployment of Ocean Thermal Energy Conversions (OTEC) systems are extended by allowing some atmospheric feedback in an ocean general circulation model. A modified ocean-atmosphere thermal boundary condition is used where relaxation corresponds to atmospheric longwave radiation to space, and an additional term expresses horizontal atmospheric transport. This produces lower steady-state OTEC power maxima (8 to 10.2 TW instead of 14.1 TW for global OTEC scenarios, and 7.2 to 9.3 TW instead of 11.9 TW for OTEC implementation within 100 km of coastlines). When power production peaks, power intensity remains practically unchanged, at 0.2 TW per Sverdrup of OTEC deep cold seawater, suggesting a similar degradation of the OTEC thermal resource. Large-scale environmental effects include surface cooling in low latitudes and warming elsewhere, with a net heat intake within the water column. These changes develop rapidly from the propagation of Kelvin and Rossby waves, and ocean current advection. Two deep circulation cells are generated in the Atlantic and Indo-Pacific basins. The Atlantic Meridional Overturning Circulation (AMOC) is reinforced while an AMOC-like feature appears in the North Pacific, with deep convective winter events at high latitudes. Transport between the Indo-Pacific and the Southern Ocean is strengthened, with impacts on the Atlantic via the Antarctic Circumpolar Current (ACC). |
author |
Jia, Yanli Nihous, Gérard Rajagopalan, Krishnakumar |
author_facet |
Jia, Yanli Nihous, Gérard Rajagopalan, Krishnakumar |
author_sort |
Jia, Yanli |
title |
An Evaluation of the Large-Scale Implementation of Ocean Thermal Energy Conversion (OTEC) Using an Ocean General Circulation Model with Low-Complexity Atmospheric Feedback Effects |
title_short |
An Evaluation of the Large-Scale Implementation of Ocean Thermal Energy Conversion (OTEC) Using an Ocean General Circulation Model with Low-Complexity Atmospheric Feedback Effects |
title_full |
An Evaluation of the Large-Scale Implementation of Ocean Thermal Energy Conversion (OTEC) Using an Ocean General Circulation Model with Low-Complexity Atmospheric Feedback Effects |
title_fullStr |
An Evaluation of the Large-Scale Implementation of Ocean Thermal Energy Conversion (OTEC) Using an Ocean General Circulation Model with Low-Complexity Atmospheric Feedback Effects |
title_full_unstemmed |
An Evaluation of the Large-Scale Implementation of Ocean Thermal Energy Conversion (OTEC) Using an Ocean General Circulation Model with Low-Complexity Atmospheric Feedback Effects |
title_sort |
evaluation of the large-scale implementation of ocean thermal energy conversion (otec) using an ocean general circulation model with low-complexity atmospheric feedback effects |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1507789 https://www.osti.gov/biblio/1507789 https://doi.org/10.3390/jmse6010012 |
geographic |
Antarctic Southern Ocean The Antarctic Pacific |
geographic_facet |
Antarctic Southern Ocean The Antarctic Pacific |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
http://www.osti.gov/servlets/purl/1507789 https://www.osti.gov/biblio/1507789 https://doi.org/10.3390/jmse6010012 doi:10.3390/jmse6010012 |
op_doi |
https://doi.org/10.3390/jmse6010012 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
6 |
container_issue |
1 |
container_start_page |
12 |
_version_ |
1772810127189999616 |