HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
理学院・理学研究院  >
雑誌発表論文等  >

Acceleration signal in GRACE time-variable gravity in relation to interannual hydrological changes

j.1365-246X.2010.04843.x.pdf830.5 kBPDF見る/開く

タイトル: Acceleration signal in GRACE time-variable gravity in relation to interannual hydrological changes
著者: Ogawa, Ryoko 著作を一覧する
Chao, Benjamin F. 著作を一覧する
Heki, Kosuke 著作を一覧する
キーワード: Satellite geodesy
Time variable gravity
Global change from geodesy
発行日: 2011年 2月
出版者: the Royal Astronomical Society and Blackwell Publishing
誌名: Geophysical Journal International
巻: 184
号: 2
開始ページ: 673
終了ページ: 679
出版社 DOI: 10.1111/j.1365-246X.2010.04843.x
抄録: We use 6 yr of data of the GRACE (Gravity Recovery and Climate Experiment) satellite mission, which yield estimation for interannual signals in gravity changes. We solve for such signals in the form of not only linear trend but also quadratic term (acceleration/deceleration) of mass variations globally at a spatial resolution of 500 km. On continents they signify hydrological mass transport, where any linear trend in precipitation minus evepotranspiration is the input to and hence responsible for, the quadratic change in continental water storage and hence in gravity. Comparison studies of geographical patterns of the quadratic (representing acceleration/ deceleration) terms show interesting agreement of the hydrological model GLDAS with GRACE data in many major areas, providing independent assessment as to the quality and validity of the hydrological models for interannual applications.
Rights: The definitive version is available at
資料タイプ: article
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 日置 幸介


本サイトに関するご意見・お問い合わせは repo at へお願いします。 - 北海道大学