Data

Tidal effects on the ice concentration and lead fraction over the continental shelf and slope off Wilkes Land

Australian Ocean Data Network
Robertson, R. ; ROBERTSON, ROBIN
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://catalogue-aodn.prod.aodn.org.au/geonetwork/srv/eng/search?uuid=ASAC_2944&rft.title=Tidal effects on the ice concentration and lead fraction over the continental shelf and slope off Wilkes Land&rft.identifier=http://catalogue-aodn.prod.aodn.org.au/geonetwork/srv/eng/search?uuid=ASAC_2944&rft.publisher=Australian Antarctic Data Centre&rft.description=Metadata record for data from AAS (ASAC) project 2944. Public Sea ice and tides are important factors affecting ocean-atmosphere heat transfer and deep water formation. They affect climate and the global thermohaline circulation. Generally, tidal processes were ignored in coupled sea ice/ocean models and sea ice was ignored in tidal models. Here, a coupled sea ice/ocean model is used to evaluate tidal effects on sea ice and deep water formation in the continental margin off Wilkes Land. The model results will both support and be verified against results from an observational sea ice program. The project will also investigate the effects of warming of circumpolar deep water on sea ice. Project objectives: 1. a quantitative evaluation of the tidal effects, including those of internal tides, on the sea ice concentration and thickness, lead formation, ocean-atmosphere heat flux, and deep water formation 2. generation of estimates of sea ice and tidal velocity fields in support of AAS 2901 3. validation of an established coupled ocean/sea ice model in realistic scenarios 4. simulation of the effects of warming of the Circumpolar Deep Water on sea ice concentrations and tidal effects on the sea ice Taken from the 2008-2009 Progress Report: 1.This year it was necessary to update the model I use, ROMS, since significant changes had been made by the model development committee. It required considerable work to implement my changes into the new model and test it. Subsequently, simulations of internal tides were again performed for the region off Wilkes Land. 2-4. Limited progress. Taken from the 2009-2010 Progress Report: I am investigating the role of tides on the cryosphere, specifically sea ice and ice shelves, focussing on the Pine Island Glacier in the Amundsen Sea and the Wilkes Land region of the Antarctic. Both modeling and observational data are being used. This year I simulated tides for the region and analysed observational data to identify the role of tides and to verify the model.Progress Code: completedStatement: The values provided in temporal and spatial coverage are approximate only. Taken from the 2008-2009 Progress Report: Difficulties affecting project: Updating the model required extensive extra work.&rft.creator=Robertson, R. &rft.creator=ROBERTSON, ROBIN &rft.date=2009&rft.coverage=westlimit=100; southlimit=-68.0; eastlimit=125; northlimit=-62.0&rft.coverage=westlimit=100; southlimit=-68.0; eastlimit=125; northlimit=-62.0&rft_rights=This metadata record is publicly available.&rft_rights=Details about the model are available from the provided URL.&rft_rights= https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2944 when using these data. http://creativecommons.org/licenses/by/4.0/).&rft_rights=Portable Network Graphic&rft_rights=https://i.creativecommons.org/l/by/3.0/88x31.png&rft_rights=Creative Commons by Attribution logo&rft_rights=Attribution 4.0 International (CC BY 4.0)&rft_rights=Legal code for Creative Commons by Attribution 4.0 International license&rft_rights=Attribution 4.0 International (CC BY 4.0)&rft_rights= https://creativecommons.org/licenses/by/4.0/legalcode&rft_subject=oceans&rft_subject=EARTH SCIENCE > CRYOSPHERE > SEA ICE&rft_subject=EARTH SCIENCE > OCEANS > OCEAN HEAT BUDGET&rft_subject=EARTH SCIENCE > OCEANS > SEA ICE&rft_subject=EARTH SCIENCE > OCEANS > TIDES&rft_subject=Tides&rft_subject=Deep Water&rft_subject=Heat Transfer&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=AMD&rft_subject=OCEAN > SOUTHERN OCEAN&rft_subject=CONTINENT > ANTARCTICA&rft_subject=GEOGRAPHIC REGION > POLAR&rft.type=dataset&rft.language=English Access the data

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This data set conforms to the CCBY Attribution License
(http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2944 when using these data.
http://creativecommons.org/licenses/by/4.0/).

Attribution 4.0 International (CC BY 4.0)

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This metadata record is publicly available.

Details about the model are available from the provided URL.

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Attribution 4.0 International (CC BY 4.0)

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metadata@aad.gov.au

Brief description

Metadata record for data from AAS (ASAC) project 2944.

Public
Sea ice and tides are important factors affecting ocean-atmosphere heat transfer and deep water formation. They affect climate and the global thermohaline circulation. Generally, tidal processes were ignored in coupled sea ice/ocean models and sea ice was ignored in tidal models. Here, a coupled sea ice/ocean model is used to evaluate tidal effects on sea ice and deep water formation in the continental margin off Wilkes Land. The model results will both support and be verified against results from an observational sea ice program. The project will also investigate the effects of warming of circumpolar deep water on sea ice.

Project objectives:
1. a quantitative evaluation of the tidal effects, including those of internal tides, on the sea ice concentration and thickness, lead formation, ocean-atmosphere heat flux, and deep water formation
2. generation of estimates of sea ice and tidal velocity fields in support of AAS 2901
3. validation of an established coupled ocean/sea ice model in realistic scenarios
4. simulation of the effects of warming of the Circumpolar Deep Water on sea ice concentrations and tidal effects on the sea ice

Taken from the 2008-2009 Progress Report:
1.This year it was necessary to update the model I use, ROMS, since significant changes had been made by the model development committee. It required considerable work to implement my changes into the new model and test it. Subsequently, simulations of internal tides were again performed for the region off Wilkes Land.
2-4. Limited progress.

Taken from the 2009-2010 Progress Report:
I am investigating the role of tides on the cryosphere, specifically sea ice and ice shelves, focussing on the Pine Island Glacier in the Amundsen Sea and the Wilkes Land region of the Antarctic. Both modeling and observational data are being used. This year I simulated tides for the region and analysed observational data to identify the role of tides and to verify the model.

Lineage

Progress Code: completed
Statement: The values provided in temporal and spatial coverage are approximate only.

Taken from the 2008-2009 Progress Report:
Difficulties affecting project:
Updating the model required extensive extra work.

Data time period: 2007-09-30 to 2010-03-31

125,-62 125,-68 100,-68 100,-62 125,-62

112.5,-65

text: westlimit=100; southlimit=-68.0; eastlimit=125; northlimit=-62.0

Other Information
ROMS home page (VIEW RELATED INFORMATION)

uri : http://www.myroms.org/index.php

Identifiers
  • global : ASAC_2944