Some indications of a reversed surface flow around Tasmania in the Fine Resolution Antarctic Model (FRAM)

South of Tasmania, the Fine Resolution Antarctic Model (FRAM) shows a narrow band of westward upper layer flow. We argue that this is caused by the closure of the Indonesian passage in FRAM. This is supported by numerical experiments carried out by Hirst & Godfrey (1993). The FRAM surface temper...

Full description

Bibliographic Details
Main Authors: Ribbe, Joachim, Tomczak, Matthias
Format: Article in Journal/Newspaper
Language:unknown
Published: 1996
Subjects:
Online Access:https://research.usq.edu.au/item/9xw3v/some-indications-of-a-reversed-surface-flow-around-tasmania-in-the-fine-resolution-antarctic-model-fram
https://research.usq.edu.au/download/7755a91ce5434677993635891a331a73a13636bd0b1d7c4997990e3102101db8/37570/Ribbe_Tomczac_Ocean_modelling_paper.pdf
id ftusqland:oai:research.usq.edu.au:9xw3v
record_format openpolar
spelling ftusqland:oai:research.usq.edu.au:9xw3v 2023-07-02T03:30:13+02:00 Some indications of a reversed surface flow around Tasmania in the Fine Resolution Antarctic Model (FRAM) Ribbe, Joachim Tomczak, Matthias 1996 application/pdf https://research.usq.edu.au/item/9xw3v/some-indications-of-a-reversed-surface-flow-around-tasmania-in-the-fine-resolution-antarctic-model-fram https://research.usq.edu.au/download/7755a91ce5434677993635891a331a73a13636bd0b1d7c4997990e3102101db8/37570/Ribbe_Tomczac_Ocean_modelling_paper.pdf unknown https://research.usq.edu.au/download/7755a91ce5434677993635891a331a73a13636bd0b1d7c4997990e3102101db8/37570/Ribbe_Tomczac_Ocean_modelling_paper.pdf Ribbe, Joachim and Tomczak, Matthias. 1996. "Some indications of a reversed surface flow around Tasmania in the Fine Resolution Antarctic Model (FRAM)." Ocean Modelling newsletter. 111, pp. 2-5. ocean circulation Southern Ocean Pacific Ocean Indian Ocean ocean modelling article NotPeerReviewed 1996 ftusqland 2023-06-12T22:36:30Z South of Tasmania, the Fine Resolution Antarctic Model (FRAM) shows a narrow band of westward upper layer flow. We argue that this is caused by the closure of the Indonesian passage in FRAM. This is supported by numerical experiments carried out by Hirst & Godfrey (1993). The FRAM surface temperature and salinity distribution exhibits distinct anomalies in the southeast Indian Ocean, in good agreement with anomalies observed in the Hirst & Godfrey (1993) model. Indonesian Throughflow water advects heat into the Indian Ocean; its absence in FRAM results in a lack of thermal energy to warm the Indian Ocean in the model. The surface salinity anomaly is most likely caused by an over-estimated Ekman transport. The weakened heat and salinity transport in FRAM restrict surface convection in the mid-latitude region to approximately 350 m. The effect of the Indonesian Throughflow closure in FRAM is even more dramatic for the circulation around Australia and Tasmania. Hirst & Godfreys (1993) results suggest that in the case of an open Indonesian passage, the flow in the surface layer is eastward, ie from the Indian to the Pacific Ocean. FRAM shows westward flow consistant with a closed Indonesian passage. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean University of Southern Queensland: USQ ePrints Antarctic Indian Pacific Southern Ocean
institution Open Polar
collection University of Southern Queensland: USQ ePrints
op_collection_id ftusqland
language unknown
topic ocean circulation
Southern Ocean
Pacific Ocean
Indian Ocean
ocean modelling
spellingShingle ocean circulation
Southern Ocean
Pacific Ocean
Indian Ocean
ocean modelling
Ribbe, Joachim
Tomczak, Matthias
Some indications of a reversed surface flow around Tasmania in the Fine Resolution Antarctic Model (FRAM)
topic_facet ocean circulation
Southern Ocean
Pacific Ocean
Indian Ocean
ocean modelling
description South of Tasmania, the Fine Resolution Antarctic Model (FRAM) shows a narrow band of westward upper layer flow. We argue that this is caused by the closure of the Indonesian passage in FRAM. This is supported by numerical experiments carried out by Hirst & Godfrey (1993). The FRAM surface temperature and salinity distribution exhibits distinct anomalies in the southeast Indian Ocean, in good agreement with anomalies observed in the Hirst & Godfrey (1993) model. Indonesian Throughflow water advects heat into the Indian Ocean; its absence in FRAM results in a lack of thermal energy to warm the Indian Ocean in the model. The surface salinity anomaly is most likely caused by an over-estimated Ekman transport. The weakened heat and salinity transport in FRAM restrict surface convection in the mid-latitude region to approximately 350 m. The effect of the Indonesian Throughflow closure in FRAM is even more dramatic for the circulation around Australia and Tasmania. Hirst & Godfreys (1993) results suggest that in the case of an open Indonesian passage, the flow in the surface layer is eastward, ie from the Indian to the Pacific Ocean. FRAM shows westward flow consistant with a closed Indonesian passage.
format Article in Journal/Newspaper
author Ribbe, Joachim
Tomczak, Matthias
author_facet Ribbe, Joachim
Tomczak, Matthias
author_sort Ribbe, Joachim
title Some indications of a reversed surface flow around Tasmania in the Fine Resolution Antarctic Model (FRAM)
title_short Some indications of a reversed surface flow around Tasmania in the Fine Resolution Antarctic Model (FRAM)
title_full Some indications of a reversed surface flow around Tasmania in the Fine Resolution Antarctic Model (FRAM)
title_fullStr Some indications of a reversed surface flow around Tasmania in the Fine Resolution Antarctic Model (FRAM)
title_full_unstemmed Some indications of a reversed surface flow around Tasmania in the Fine Resolution Antarctic Model (FRAM)
title_sort some indications of a reversed surface flow around tasmania in the fine resolution antarctic model (fram)
publishDate 1996
url https://research.usq.edu.au/item/9xw3v/some-indications-of-a-reversed-surface-flow-around-tasmania-in-the-fine-resolution-antarctic-model-fram
https://research.usq.edu.au/download/7755a91ce5434677993635891a331a73a13636bd0b1d7c4997990e3102101db8/37570/Ribbe_Tomczac_Ocean_modelling_paper.pdf
geographic Antarctic
Indian
Pacific
Southern Ocean
geographic_facet Antarctic
Indian
Pacific
Southern Ocean
genre Antarc*
Antarctic
Southern Ocean
genre_facet Antarc*
Antarctic
Southern Ocean
op_relation https://research.usq.edu.au/download/7755a91ce5434677993635891a331a73a13636bd0b1d7c4997990e3102101db8/37570/Ribbe_Tomczac_Ocean_modelling_paper.pdf
Ribbe, Joachim and Tomczak, Matthias. 1996. "Some indications of a reversed surface flow around Tasmania in the Fine Resolution Antarctic Model (FRAM)." Ocean Modelling newsletter. 111, pp. 2-5.
_version_ 1770274450483183616