Antarctic verification of the Australian Numerical Weather Prediction Model
The Australian Community Climate and Earth-System Simulator-Global (ACCESS-G) features an atmosphere-only numerical weather prediction (NWP) suite used operationally by the Australian Bureau of Meteorology to forecast weather conditions for the Antarctic. The current operational version of the forec...
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ftunivtasmania:oai:eprints.utas.edu.au:44121 2023-05-15T13:04:16+02:00 Antarctic verification of the Australian Numerical Weather Prediction Model Schroeter, BJE Reid, P Bindoff, NL Michael, KJ 2019 application/pdf https://eprints.utas.edu.au/44121/ https://eprints.utas.edu.au/44121/1/139520%20-%20Antarctic%20verification%20of%20the%20Australian%20Numerical%20Weather%20Prediction%20Model.pdf en eng Amer Meteorological Soc https://eprints.utas.edu.au/44121/1/139520%20-%20Antarctic%20verification%20of%20the%20Australian%20Numerical%20Weather%20Prediction%20Model.pdf Schroeter, BJE, Reid, P, Bindoff, NL orcid:0000-0001-5662-9519 and Michael, KJ orcid:0000-0002-5427-7393 2019 , 'Antarctic verification of the Australian Numerical Weather Prediction Model' , Weather and Forecasting, vol. 34, no. 4 , pp. 1081-1096 , doi:10.1175/WAF-D-18-0171.1 <http://dx.doi.org/10.1175/WAF-D-18-0171.1>. Antarctica forecast verification/skill numerical weather prediction forecasting operational forecasting Article PeerReviewed 2019 ftunivtasmania https://doi.org/10.1175/WAF-D-18-0171.1 2022-02-28T23:16:48Z The Australian Community Climate and Earth-System Simulator-Global (ACCESS-G) features an atmosphere-only numerical weather prediction (NWP) suite used operationally by the Australian Bureau of Meteorology to forecast weather conditions for the Antarctic. The current operational version of the forecast model, the Australian Parallel Suite v2 (APS2), has been used operationally since early 2016. To date, the performance of the model has been largely unverified for the Antarctic and anecdotal reports suggest challenges for model performance in the region. This study investigates the performance of ACCESS-G south of 50°S over 2017 and finds that model performance degrades toward the poles and in proportion to forecast horizon against a range of performance metrics. The model exhibits persistent negative surface and mean sea level pressure biases around the Adelie Land coast, which is linked to the underrepresentation of model winds to the west, and driven by positive screen temperature biases that inhibit modeled katabatic outflow. These results suggest that an improved representation of boundary layer parameterization could be implemented to improve model performance in the region. Article in Journal/Newspaper Adelie Land Antarc* Antarctic Antarctica University of Tasmania: UTas ePrints Antarctic The Antarctic Weather and Forecasting 34 4 1081 1096 |
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Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
Antarctica forecast verification/skill numerical weather prediction forecasting operational forecasting |
spellingShingle |
Antarctica forecast verification/skill numerical weather prediction forecasting operational forecasting Schroeter, BJE Reid, P Bindoff, NL Michael, KJ Antarctic verification of the Australian Numerical Weather Prediction Model |
topic_facet |
Antarctica forecast verification/skill numerical weather prediction forecasting operational forecasting |
description |
The Australian Community Climate and Earth-System Simulator-Global (ACCESS-G) features an atmosphere-only numerical weather prediction (NWP) suite used operationally by the Australian Bureau of Meteorology to forecast weather conditions for the Antarctic. The current operational version of the forecast model, the Australian Parallel Suite v2 (APS2), has been used operationally since early 2016. To date, the performance of the model has been largely unverified for the Antarctic and anecdotal reports suggest challenges for model performance in the region. This study investigates the performance of ACCESS-G south of 50°S over 2017 and finds that model performance degrades toward the poles and in proportion to forecast horizon against a range of performance metrics. The model exhibits persistent negative surface and mean sea level pressure biases around the Adelie Land coast, which is linked to the underrepresentation of model winds to the west, and driven by positive screen temperature biases that inhibit modeled katabatic outflow. These results suggest that an improved representation of boundary layer parameterization could be implemented to improve model performance in the region. |
format |
Article in Journal/Newspaper |
author |
Schroeter, BJE Reid, P Bindoff, NL Michael, KJ |
author_facet |
Schroeter, BJE Reid, P Bindoff, NL Michael, KJ |
author_sort |
Schroeter, BJE |
title |
Antarctic verification of the Australian Numerical Weather Prediction Model |
title_short |
Antarctic verification of the Australian Numerical Weather Prediction Model |
title_full |
Antarctic verification of the Australian Numerical Weather Prediction Model |
title_fullStr |
Antarctic verification of the Australian Numerical Weather Prediction Model |
title_full_unstemmed |
Antarctic verification of the Australian Numerical Weather Prediction Model |
title_sort |
antarctic verification of the australian numerical weather prediction model |
publisher |
Amer Meteorological Soc |
publishDate |
2019 |
url |
https://eprints.utas.edu.au/44121/ https://eprints.utas.edu.au/44121/1/139520%20-%20Antarctic%20verification%20of%20the%20Australian%20Numerical%20Weather%20Prediction%20Model.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Adelie Land Antarc* Antarctic Antarctica |
genre_facet |
Adelie Land Antarc* Antarctic Antarctica |
op_relation |
https://eprints.utas.edu.au/44121/1/139520%20-%20Antarctic%20verification%20of%20the%20Australian%20Numerical%20Weather%20Prediction%20Model.pdf Schroeter, BJE, Reid, P, Bindoff, NL orcid:0000-0001-5662-9519 and Michael, KJ orcid:0000-0002-5427-7393 2019 , 'Antarctic verification of the Australian Numerical Weather Prediction Model' , Weather and Forecasting, vol. 34, no. 4 , pp. 1081-1096 , doi:10.1175/WAF-D-18-0171.1 <http://dx.doi.org/10.1175/WAF-D-18-0171.1>. |
op_doi |
https://doi.org/10.1175/WAF-D-18-0171.1 |
container_title |
Weather and Forecasting |
container_volume |
34 |
container_issue |
4 |
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1081 |
op_container_end_page |
1096 |
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1766356282863779840 |