{"created":"2023-07-25T11:06:41.648234+00:00","id":10172,"links":{},"metadata":{"_buckets":{"deposit":"932d243a-de6c-45a0-83e1-b882aa37fe9c"},"_deposit":{"created_by":27,"id":"10172","owners":[27],"pid":{"revision_id":0,"type":"depid","value":"10172"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00010172","sets":[]},"author_link":["19195","19198","19199","19194","19196","19197"],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2012-04","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"69","bibliographicPageStart":"55","bibliographicVolumeNumber":"6","bibliographic_titles":[{"bibliographic_title":"Polar science"},{"bibliographic_title":"Polar science","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"In this study, three-dimensional structures and the life-time behavior of arctic cyclones are investigated as case studies, using reanalysis data of JRA-25 and JCDAS. In recent years, arctic region has undergone drastic warming in conjunction with the reduced sea ice concentration in summer. The rapid reduction of the sea ice concentration is explained, to some extent, by a pressure dipole of the arctic cyclone and Beaufort high over the Arctic Ocean. This paper presents some case studies for the structure of the arctic cyclone.It is found by the analysis of this study that the arctic cyclone indicates many differences in structure and behavior compared with the mid-latitude cyclone. The arctic cyclones move rather randomly in direction over the Arctic Ocean. The arctic cyclone has a barotropic structure in the vertical from the surface to the stratosphere. The arctic cyclone detected at the sea level pressure is connected with the polar vortex at the 500 hPa level and above. Importantly, the arctic cyclone has a cold core in the troposphere and a warm core around the 200 hPa level. The mechanism of the formation is discussed based on the analyzed structure of the arctic cyclones.","subitem_description_type":"Abstract"}]},"item_10001_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"　本研究では，JRA-25/JCDAS再解析データを用いて北極低気圧の3次元構造とその振舞いについての事例解析を行った．近年，北極域は夏期の海氷減少によって劇的に温暖化している．急速な海氷減少の広がりには，北極海上の北極低気圧とボーフォート高気圧による気圧のダイポール構造が寄与している．そこで、2006年から2008年までの夏季に発生した北極低気圧から、典型的な3例を選び詳細な解析を行った。\n　本研究によって，北極低気圧は中緯度の温帯低気圧と以下に示す点で異なった特徴を持つ事がわかった．北極低気圧は北極海上を長期間にわたりランダムに迷走する．北極低気圧は地表面から下部成層圏まで順圧的な構造を持つ。海面更正気圧で見られる北極低気圧は500 hPaより上の高度の極渦と結合している．そして、重要な特徴として，北極低気圧は対流圏にコールドコアを持ち，200 hPa付近にウォームコアを持つ寒冷渦に似た構造を持つ．本研究では、解析された北極低気圧の構造を基に、形成メカニズムについても議論した。 ","subitem_description_type":"Other"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"国立極地研究所"}]},"item_10001_relation_12":{"attribute_name":"論文ID（NAID）","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"110009418541","subitem_relation_type_select":"NAID"}}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"10.1016/j.polar.2012.03.001"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://doi.org/10.1016/j.polar.2012.03.001","subitem_relation_type_select":"DOI"}}]},"item_10001_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12240481","subitem_source_identifier_type":"NCID"}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"18739652","subitem_source_identifier_type":"ISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Tanaka, H.L."}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yamagami, Akio"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Takahashi, Shinji"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Tanaka, H.L.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yamagami, Akio","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Takahashi, Shinji","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Arctic cyclone","subitem_subject_scheme":"Other"},{"subitem_subject":"Polar vortex","subitem_subject_scheme":"Other"},{"subitem_subject":"Arctic weather","subitem_subject_scheme":"Other"},{"subitem_subject":"Arctic cyclone","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Polar vortex","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Arctic weather","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"The structure and behavior of the arctic cyclone in summer analyzed by the JRA-25/JCDAS data","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"The structure and behavior of the arctic cyclone in summer analyzed by the JRA-25/JCDAS data"},{"subitem_title":"The structure and behavior of the arctic cyclone in summer analyzed by the JRA-25/JCDAS data","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"27","path":["1347"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-10-16"},"publish_date":"2014-10-16","publish_status":"0","recid":"10172","relation_version_is_last":true,"title":["The structure and behavior of the arctic cyclone in summer analyzed by the JRA-25/JCDAS data"],"weko_creator_id":"27","weko_shared_id":27},"updated":"2023-07-25T16:21:19.495766+00:00"}