| 1. Identificação | ||||
| Tipo de Referência | Artigo em Evento (Conference Proceedings) | |||
| Site | mtc-m16b.sid.inpe.br | |||
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Repositório | cptec.inpe.br/adm_conf/2005/10.07.01.54 | |||
| Última Atualização | 2006:04.16.13.41.44 (UTC) administrator | |||
| Repositório de Metadados | cptec.inpe.br/adm_conf/2005/10.07.01.54.07 | |||
| Última Atualização dos Metadados | 2018:06.05.03.42.34 (UTC) administrator | |||
| Chave de Citação | DurrantPezzSimmSmit:2006:AsSoAu | |||
| Título | Sea ice extension around Antarctica: Association with southern Australian rainfall via changes in Southern Hemisphere cyclone and anticyclone behaviour  | |||
| Formato | CD-ROM, On-line. | |||
| Ano | 2006 | |||
| Data de Acesso | 24 jun. 2024 | |||
| Tipo Secundário | PRE CI | |||
| Número de Arquivos | 1 | |||
| Tamanho | 495 KiB | |||
| 2. Contextualização | ||||
| Autor | 1 Durrant, Thomas Hawkins 2 Pezza, Alexandre Bernandes 3 Simmonds, Ian 4 Smith, Ian | |||
| Afiliação | 1 The University of Melbourne, Parkville VIC 3010, Australia (Durrant 2 Pezza) | |||
| Endereço de e-Mail do Autor | 1 t.durrant@pgrad.unimelb.edu.au 2 apezza@unimelb.edu.au | |||
| Editor | Vera, Carolina Nobre, Carlos | |||
| Endereço de e-Mail | t.durrant@pgrad.unimelb.edu.au | |||
| Nome do Evento | International Conference on Southern Hemisphere Meteorology and Oceanography, 8 (ICSHMO). | |||
| Localização do Evento | Foz do Iguaçu | |||
| Data | 24-28 Apr. 2006 | |||
| Editora (Publisher) | American Meteorological Society (AMS) | |||
| Cidade da Editora | 45 Beacon Hill Road, Boston, MA, USA | |||
| Páginas | 189-194 | |||
| Título do Livro | Proceedings | |||
| Tipo Terciário | Oral | |||
| Organização | American Meteorological Society (AMS) | |||
| Histórico (UTC) | 2005-10-07 01:54:07 :: thdurrant@gmail.com -> administrator :: 2005-11-28 23:10:50 :: administrator -> adm_conf :: 2005-12-16 02:02:09 :: adm_conf -> thdurrant@gmail.com :: 2006-03-28 05:35:09 :: thdurrant@gmail.com -> administrator :: 2006-04-18 20:51:09 :: administrator -> lise@dpi.inpe.br :: 2010-12-28 12:36:13 :: lise@dpi.inpe.br -> administrator :: 2010-12-29 15:54:34 :: administrator -> lise@dpi.inpe.br :: 2006 2010-12-29 16:05:32 :: lise@dpi.inpe.br -> administrator :: 2006 2010-12-29 18:50:27 :: administrator -> banon :: 2006 2011-01-02 17:14:31 :: banon -> administrator :: 2006 2018-06-05 03:42:34 :: administrator -> :: 2006 | |||
| 3. Conteúdo e estrutura | ||||
| É a matriz ou uma cópia? | é a matriz | |||
| Estágio do Conteúdo | concluido | |||
| Transferível | 1 | |||
| Palavras-Chave | Antarctic sea ice australian rainfall Southern Hemsiphere circulation | |||
| Resumo | Interactions occurring over the Southern Ocean between the Antarctic sea ice, the atmosphere and the ocean form a vastly complex system. The sparsity of data available over this region has traditionally greatly inhibited the study of this system, a short-falling which has been significantly improved in recent times by the advent of computer and satellite technology. Understanding of Antarctic sea ice and its interactions with the Southern Ocean circulation is of particular interest in Australia due to its proximity to the south Australian coast and potential influences on Australian climate. The aim of this study is to explore the relationship and possible connection between Antarctic sea ice extent and rainfall in southern Australia. An initial statistics component examines correlations between sea ice extent and rainfall in both Melbourne and Perth, guiding later work investigating associated changes in regional cyclone and anticyclone behaviour. Although this relationship between sea ice extent and southern ocean circulation has been the subject of a number of studies, this is the first detailed analysis performed focussing on the Australian region. The study is performed for the period for which reliable remotely sensed sea ice data is available, namely 1979-2003. Correlations between Perth (located on the west coast) and Melbourne (east coast) rainfall data and sea ice extent data suggest that these two quantities are inversely related, with high sea ice extent associated with low rainfall and vice versa. Dividing the ice pack into five roughly equal longitudinal sectors, local and slightly upstream sectors appear more influential in the Australian region than the pack considered as a whole, specifically, the Indian Ocean sector is most associated with Perth rainfall, while that of Melbourne is related to the West Pacific sector. Furthermore, results suggest the strongest association occurs in winter. The Melbourne University Cyclone Tracking Scheme is employed to investigate associated changes in regional cyclone and anticyclone behaviour, analysing the NCEP2 reanalysis data set over the same period. The track statistics of system density and system depth (a measure of system strength) are analysed for composites of years when the sea ice is high and low for both the Indian and West Pacific sectors in winter. Generally, low (high) sea ice is associated with increased (decreased) cyclone system density over regions of southern Australia. This suggests physical agreement with the observed negative correlations between ice and rainfall in Melbourne and Perth, given that regions of increased cyclone system density are likely to receive more rainfall. Depth anomalies showed consistent patterns, with strong anomalous areas appearing over the Southern Ocean in areas of cyclone paths associated with frontal systems affecting Australia. Anticyclone patterns are in agreement and compliment what was found for the cyclones. Furthermore, results were consistent with the correlations regarding specific regions of influence, adding weight to these findings and overall providing a coherent physical mechanism for the observed connection. It is not possible from this kind of analysis to infer if the ice is driving these circulation changes, or being driven by them. | |||
| Área | MET | |||
| Tipo | Climate and Cryosphere of the Antarctic region | |||
| Conteúdo da Pasta doc | acessar | |||
| Conteúdo da Pasta source |
| |||
| Conteúdo da Pasta agreement | não têm arquivos | |||
| 4. Condições de acesso e uso | ||||
| URL dos dados | http://urlib.net/ibi/cptec.inpe.br/adm_conf/2005/10.07.01.54 | |||
| URL dos dados zipados | http://urlib.net/zip/cptec.inpe.br/adm_conf/2005/10.07.01.54 | |||
| Idioma | en | |||
| Arquivo Alvo | 189-194.pdf | |||
| Grupo de Usuários | thdurrant@gmail.com administrator | |||
| Visibilidade | shown | |||
| 5. Fontes relacionadas | ||||
| Acervo Hospedeiro | cptec.inpe.br/nobre/2005/06.02.21.14 cptec.inpe.br/walmeida/2003/04.25.17.12 | |||
| 6. Notas | ||||
| Nota | 1 | |||
| Campos Vazios | archivingpolicy archivist callnumber contenttype copyholder copyright creatorhistory descriptionlevel dissemination documentstage doi edition group identifier isbn issn label lineage mirrorrepository nextedition nexthigherunit notes numberofvolumes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark serieseditor session shorttitle sponsor subject tertiarymark url versiontype volume | |||