M
Masafumi Kamachi
Researcher at Japan Meteorological Agency
Publications - 17
Citations - 703
Masafumi Kamachi is an academic researcher from Japan Meteorological Agency. The author has contributed to research in topics: Data assimilation & Argo. The author has an hindex of 13, co-authored 17 publications receiving 612 citations.
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Journal ArticleDOI
The Ocean Reanalyses Intercomparison Project (ORA-IP)
Magdalena Balmaseda,Fabrice Hernandez,Andrea Storto,Matthew D. Palmer,Oscar Alves,Li Shi,Gregory C. Smith,Takahiro Toyoda,Maria Valdivieso,Bernard Barnier,David Behringer,Timothy P. Boyer,You-Soon Chang,G. Chepurin,Nicolas Ferry,Gael Forget,Yosuke Fujii,Simon A. Good,Stephanie Guinehut,Keith Haines,Yoichi Ishikawa,Sarah Keeley,Armin Köhl,Tong Lee,Matthew Martin,Simona Masina,Shuhei Masuda,Benoit Meyssignac,Kristian Mogensen,Laurent Parent,K. A. Peterson,Yongming Tang,Yonghong Yin,Guillaume Vernieres,Xiaochun Wang,Jennifer Waters,Robin Wedd,Ou Wang,Yan Xue,Matthieu Chevallier,Jean-François Lemieux,Frédéric Dupont,Tsurane Kuragano,Masafumi Kamachi,Toshiyuki Awaji,A. Caltabiano,Kirsten Wilmer-Becker,Fabienne Gaillard +47 more
TL;DR: In this article, a multi-reanalysis ensemble is used to estimate the signal-to-noise ratio (SNR) of the ocean state and to estimate uncertainty levels.
Journal ArticleDOI
Use of satellite observations for operational oceanography: recent achievements and future prospects
P. Y. Le Traon,David Antoine,Abderrahim Bentamy,Hans Bonekamp,Lars-Anders Breivik,B. Chapron,Gary K. Corlett,Gérald Dibarboure,Paul M. DiGiacomo,Craig Donlon,Yannice Faugere,Jordi Font,Fanny Girard-Ardhuin,Francis Gohin,Johnny A. Johannessen,Masafumi Kamachi,Gary Lagerloef,Juliette Lambin,Gilles Larnicol,P. Le Borgne,Eric Leuliette,Eric Lindstrom,Matthew Martin,Eileen Maturi,Laury Miller,L. Mingsen,Rosemary Morrow,Nicolas Reul,Marie-Hélène Rio,H. Roquet,Rosalia Santoleri,John Wilkin +31 more
TL;DR: An overview of the development of satellite oceanography over the past five years focusing on the most relevant issues for operational oceanography can be found in this article, where a review of future missions shows clear progress and new research and development missions with a potentially large impact for oceanography should be demonstrated.
Journal ArticleDOI
Steric sea level variability (1993–2010) in an ensemble of ocean reanalyses and objective analyses
Andrea Storto,Simona Masina,Magdalena Balmaseda,Stephanie Guinehut,Yan Xue,Tanguy Szekely,Ichiro Fukumori,Gael Forget,You-Soon Chang,You-Soon Chang,Simon A. Good,Armin Köhl,Guillaume Vernieres,Nicolas Ferry,K. Andrew Peterson,David Behringer,Masayoshi Ishii,Shuhei Masuda,Yosuke Fujii,Takahiro Toyoda,Yonghong Yin,Maria Valdivieso,Bernard Barnier,Timothy P. Boyer,Tony E. Lee,Jérôme Gourrion,Ou Wang,Ou Wang,Patrick Heimback,Anthony Rosati,Robin Kovach,Fabrice Hernandez,Matthew Martin,Masafumi Kamachi,Tsurane Kuragano,Kristian Mogensen,Oscar Alves,Keith Haines,Xiaochun Wang +38 more
TL;DR: In this paper, the global and regional steric sea level changes are estimated and compared from an ensemble of 16 ocean reanalyses and 4 objective analyses, and the ensemble mean exhibits a significant high correlation at both a global and a regional scale.
Journal ArticleDOI
Intercomparison and validation of the mixed layer depth fields of global ocean syntheses
Takahiro Toyoda,Yosuke Fujii,Tsurane Kuragano,Masafumi Kamachi,Yoichi Ishikawa,Shuhei Masuda,Kanako Sato,Toshiyuki Awaji,Toshiyuki Awaji,Fabrice Hernandez,Nicolas Ferry,Stephanie Guinehut,Matthew Martin,K. Andrew Peterson,Simon A. Good,Maria Valdivieso,Keith Haines,Andrea Storto,Simona Masina,Simona Masina,Armin Köhl,Hao Zuo,Magdalena Balmaseda,Yonghong Yin,Li Shi,Oscar Alves,Gregory C. Smith,You-Soon Chang,You-Soon Chang,Guillaume Vernieres,Xiaochun Wang,Gael Forget,Patrick Heimbach,Ou Wang,Ichiro Fukumori,Tong Lee +35 more
TL;DR: In this paper, a comparison of the global ocean surface mixed layer depth (MLD) fields estimated from a suite of major ocean syntheses is conducted, and it is shown that the bias in the ensemble mean field of the reanalyses is smaller than in the observation-only analyses.
Proceedings ArticleDOI
Ocean information provided through ensemble ocean syntheses
Detlef Stammer,Armin Köhl,Toshiyuki Awaji,Magdalena Balmaseda,David Behringer,James A. Carton,Nicolas Ferry,Albert S. Fischer,Ichiro Fukumori,B. Gise,Keith Haines,Ed Harrison,Patrick Heimbach,Masafumi Kamachi,Christian L. Keppenne,Tong Lee,Simona Masina,Dimitris Menemenlis,Rui M. Ponte,E. Remy,Michele M. Rienecker,Anthony Rosati,Jens Schröter,Doug Smith,Anthony T. Weaver,C. Wunsch,Yan Xue +26 more
TL;DR: The work in this article summarizes climate variability as seen by several ocean syntheses, describes similarities and differences in these solutions and uses results to highlight developments necessary over the next decade to improve ocean products and services.