{"created":"2023-07-25T11:06:39.203576+00:00","id":10127,"links":{},"metadata":{"_buckets":{"deposit":"31ef634d-33d9-4dff-930c-0dcc677e2e0d"},"_deposit":{"created_by":27,"id":"10127","owners":[27],"pid":{"revision_id":0,"type":"depid","value":"10127"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00010127","sets":[]},"author_link":["18547","18542","18544","18548","18549","18543","18545","18546"],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2013-06","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"81","bibliographicPageStart":"72","bibliographicVolumeNumber":"7","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 recent years, monitoring offshore surface circulation in the Arctic Ocean with high frequency radars has become an issue of increasing practical importance. In this study, radar positions are optimized by minimizing the reconstruction errors of the surface currents in the Southeastern Chukchi Sea. By means of an adjoint sensitivity technique it is shown that in the case of a pair of radars, their optimal (i.e. most favorable) location is at Kivalina, a settlement near the strongest outflow of the Alaskan Coastal Current from the monitored domain. The least favorable location is at Shishmaref, a settlement near relatively weak inflow into the region as observed from the coast. However, if two pairs of radars are available, the best locations are Kivalina and Shishmaref. The results are verified using observational system simulation experiments (OSSEs) performed in the framework of a 4-dimensional variational assimilation of simulated radar observations into a numerical model. It is shown that correct specification of the first guess solution is of primary importance for obtaining realistic results from both adjoint sensitivity analysis and OSSEs. This emphasizes the necessity of obtaining accurate high resolution climatologies for future ice-free offshore regions in the Arctic.","subitem_description_type":"Abstract"}]},"item_10001_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"　近年、北極海の沖合いにおける表層循環の短波レーダによるモニタリングは実用的な重要性を増している。本研究では、チャクチ海南東部において表層流の合成時のエラーを最小にするレーダの設置場所について考察した。アジョイント感度法によって、レーダーが2基の場合は、最適な設置場所はモニタリング域から最も強いアラスカ沿岸流の流出が見られる地点に近いキバリナという集落であることが示された。最悪の設置場所は、モニタリング域への比較的弱い流入が沿岸から観測されている地点に近いシシュマレフという集落である。これらの結果は、シミュレートされたレーダ観測データを数値モデルに 4 次元変分法で同化することによって、観測システムシミュレーション実験を使って検証された。最初の推定解を正しく特定することが、感度解析と観測システムシミュレーション実験の両方で現実的な結果を得るために最も重要である。このことは、将来予想される海氷が無い北極海の沖合い域について、正確な高解像能の気候場を得ることの必要性を強調している。","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":"110009579427","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.2013.01.001"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://doi.org/10.1016/j.polar.2013.01.001","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":"Panteleev, Gleb"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yaremchuk, Max"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Francis, Oceana"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kikuchi, Takashi"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Panteleev, Gleb","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yaremchuk, Max","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Francis, Oceana","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kikuchi, Takashi","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Data assimilation","subitem_subject_scheme":"Other"},{"subitem_subject":"Optimization","subitem_subject_scheme":"Other"},{"subitem_subject":"Chukchi Sea","subitem_subject_scheme":"Other"},{"subitem_subject":"High frequency radar","subitem_subject_scheme":"Other"},{"subitem_subject":"Data assimilation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Optimization","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Chukchi Sea","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"High frequency radar","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":"Configuring high frequency radar observations in the Southern Chukchi Sea","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Configuring high frequency radar observations in the Southern Chukchi Sea"},{"subitem_title":"Configuring high frequency radar observations in the Southern Chukchi Sea","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"27","path":["1345"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-10-16"},"publish_date":"2014-10-16","publish_status":"0","recid":"10127","relation_version_is_last":true,"title":["Configuring high frequency radar observations in the Southern Chukchi Sea"],"weko_creator_id":"27","weko_shared_id":27},"updated":"2023-07-25T16:21:31.252355+00:00"}