TOYOTA Takenobu

J-GLOBAL         Last updated: Nov 14, 2018 at 17:29
 
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Name
TOYOTA Takenobu
E-mail
toyotalowtem.hokudai.ac.jp
URL
http://climbsd.lowtem.hokudai.ac.jp/group/toyota/index-e.html
Affiliation
Hokkaido University
Section
Institute of Low Temperature Science, Water and Material Cycles
Job title
Assistant Professor
Degree
Doctor of Earth Environmental Science(Hokkaido University), Master of Science(The University of Tokyo)
Research funding number
80312411

Research Areas

 
 

Academic & Professional Experience

 
1987
 - 
1991
 Technical Staff,Sapporo District Meteorological Observatory
 
1991
 - 
1995
 Technical Staff,Japan Meteorological Agency
 
1999
 - 
Today
 Assistant Professor, Hokkaido University, Institite of Low Temperature Science
 

Education

 
Apr 1985
 - 
Mar 1987
Master course of Faculty of Science, University of Tokyo
 
Apr 1995
 - 
Dec 1998
Doctoral course of Graduate School of Earth Environmental Science, Hokkaido University
 

Committee Memberships

 
2001
 - 
2003
Japanese Society of Snow and Ice, Hokkaido Branch  Accountant
 

Published Papers

 
Winter iron supply processes fueling spring phytoplankton growth in a sub-polar marginal sea, the Sea of Okhotsk: Importance of sea ice and the East Sakhalin Current
Kanna, N., Y. Sibano, T. Toyota, and J. Nishioka
Marine Chemistry   206 109-120   Oct 2018   [Refereed]
Estimation of sea-ice thickness and volume in the Sea of Okhotsk based on ICESat data
Nihashi, S., N.T. Kurtz, T. Markus, K.I. Ohshima, K. Tateyama, and T. Toyota
Annals of Glacilogy   59(76) 101-111   Apr 2018   [Refereed]
Toyota, T., and N. Kimura
Journal of Geophysical Research: Oceans   123(2) 1406-1428   Feb 2018   [Refereed]
The role of snow in the thickening processes of lake ice at Lake Abashiri, Hokkaido, Japan
Ohata, Y., T. Toyota, and A.D. Fraser
Tellus A: Dynamic Meteorology and Oceanography   69(1) 1391655-doi: 10.1080/16000870.2017.139   Nov 2017   [Refereed]
Toyota, T., A.L. Kohout, and A.D. Fraser
Deep-Sea Research Part II: Topical Studies in Oceanography   131 28-40   Sep 2016   [Refereed]
© 2015 Elsevier Ltd To understand the behavior of the Seasonal Ice Zone (SIZ), which is composed of sea-ice floes of various sizes, knowledge of the floe size distribution (FSD) is important. In particular, FSD in the Marginal Ice Zone (MIZ), cont...
Kohout, A.L., M.J.M. Williams, T. Toyota, J. Lieser, and J. Hutchings
Deep-Sea Research Part II: Topical Studies in Oceanography   131 22-27   Sep 2016   [Refereed]
© 2015 Elsevier Ltd Ocean waves can propagate hundreds of kilometers into sea ice, leaving behind a wake of broken ice floes. Three floe breakup events were observed during the second Sea Ice Physics and Ecosystem Experiment (SIPEX-2). We show tha...
Lecomte, O., and T. Toyota
Deep-Sea Research Part II   131 68-74   Sep 2016   [Refereed]
Toyota, T., R. Massom, O. Lecomte, D. Nomura, P. Heil, T. Tamura, and A.D. Fraser
Deep-Sea Research Part II: Topical Studies in Oceanography   131 53-67   Sep 2016   [Refereed]
© 2016 Elsevier Ltd. In late winter-early spring 2012, the second Sea Ice Physics and Ecosystems Experiment (SIPEX II) was conducted off Wilkes Land, East Antarctica, onboard R/V Aurora Australis. The sea-ice conditions were characterized by signi...
Ohata, Y., T. Toyota, and T. Shiraiwa
Journal of Glaciology   62(233) 563-578   Jun 2016   [Refereed]
© The Author(s) 2016. Lake-ice properties at Lake Abashiri, Hokkaido, Japan, were examined using field observations and a 1-D thermodynamic model to clarify formation processes at mid-latitudes subject to significant snowfall as well as moderate a...
Williams, G. D., A. D. Fraser, A. Lucieer, D. Turner, E. Cougnon, P. Kimball, T. Toyota, T. Maksym, H. Singh, F. Nitsche, and M. Paget
Eos   97(5) 17-21   Mar 2016   [Refereed]

Misc

 
Properties of deformed sea ice area in the southern Sea of Okhotsk derived from satellite SAR images
Toyota, T., and J. Ishiyama
Proceedings of the 33rd International Symposium on Okhotsk Sea & Polar Oceans 2018   207-210   Feb 2018
Changes of Sea-Ice nomenclature from WMO 1970 to WMO 2014 -What is the English name of “Ryuhyo” (in Japanese)?
Takahashi, S., and T. Toyota
Proceedings of the 33rd International Symposium on Okhotsk Sea & Polar Oceans 2018   322-325   Feb 2018
The role of snow-ice in the thickening processes of lake ice at Lake Abashiri, Hokkaido, Japan
Ohata, Y., T. Toyota, A.D. Fraser, and T. Shiraiwa
Proceedings of the 23rd IAHR International Symposium on Ice   1-8   Jun 2016   [Refereed]
Tank experiments on the granular ice formation processes
Toyota, T., and H. Koda
Proceedings of the 23rd IAHR International Symposium on Ice   1-8   Jun 2016   [Refereed]
Field observations of impingign seawater spray using sea spray meters, - Case study of the icebreaker Soya -
Ozeki, T., Y. Yashiro, G. Sagawa, K. Tateyama, and T. Toyota
Proceedings of The 31st International Symposium on Okhotsk Sea & Sea Ice   182-185   Feb 2016
The formation process of granular ice of the seawater in laboratory experiments
Koda, H., and T. Toyota
Proceedings of The 29th International Symposium on Okhotsk Sea & Sea Ice   135-137   Feb 2014
On the validity of the sea ice rheology by Hibler for the Sea of Okhotsk ice
Toyota, T., and N. Kimura
Proceedings of The 28th International Symposium on Okhotsk Sea & Sea Ice   91-94   Feb 2013
Possibility of ice thickness retrieval in the Okhotsk Sea and the Lincoln Sea using ALOS/PALSAR
Toyota, T., and C. Haas
Proceedings of The 26th International Symposium on Okhotsk Sea & Sea Ice   63-66   Feb 2011
Retrieval of sea ice thickness distribution in the Sea of Okhotsk from ALOS/PALSAR backscatter data
Toyota, T., H. Kamimura, S. Ono, and K. Cho
Proceedings of The 24th Inter- national Symposium on Okhotsk Sea & Sea Ice   138-142   Feb 2009
Daiki Nomura, Takenobu Toyota, Sumito Matoba, Jun Nishioka, Kunio Shirasawa
Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research   2008 44   Jan 2008

Books etc

 
Guideline of Ocean Observations
TOYOTA Takenobu (Part:Contributor, Vol. 7, Chap. 5, “Sea Ice”)
The Oceanographic Society of Japan   Feb 2018   
Advances in Geoscience and Remote Sensing
Toyota, T. (Part:Contributor, Application of remote sensing to the estimation of sea ice thickness distribution)
In-Teh   2009   

Conference Activities & Talks

 
An examination of the sea ice rheology for the seasonal ice zones, based on ice drift and thickness observations [Invited]
Toyota, T., and N. Kimura
MOSAiC Science Workshop   29 May 2018   
Properties of deformed sea ice area in the southern Sea of Okhotsk derived from satellite SAR images
Toyota, T. and J. Ishiyama
The 33rd International Symposium on Okhotsk Sea & Polar Oceans   20 Feb 2018   
Changes of Sea-Ice Nomenclature from WMO 1970 to WMO 2014 -What is the English name of “Ryuhyo” (in Japanese)?
Takahashi, S. and T. Toyota
The 33rd International Symposium on Okhotsk Sea & Polar Oceans   19 Feb 2018   
Some results on sea ice rheology for the seasonal ice zone, obtained from the deformation field of sea ice drift pattern [Invited]
Toyota, T., and N. Kimura
American Geophysical Union 2017 Fall Meeting   13 Dec 2017   
What is the English name of “Ryuhyo” (in Japanese)? - Changes of WMO Sea-ice Nomenclature –
Takahashi, S. and T. Toyota
The Eighth Symposium on Polar Science   5 Dec 2017   
An attempt to extract deformed sea ice area using L-band SAR images in the Sea of Okhotsk
Ishiyama, J. and T. Toyota
Workshop on Sea Ice Remote Sensing and Modeling   23 Jan 2017   
Incorporation and degradation processes of biogeochemical compounds within Antarctic multi-year land-fast sea ice
Nomura, D., S. Aoki, D. Simizu, T. Toyota, S. Ushio, K. Naoki, T. Tamura
The Seventh Symposium on Polar Science   30 Nov 2016   
Quasi-periodic breakup of multi-year landfast ice in Lützow-Holm Bay, Antarctica: Physical processes and some possible factors of breakup events
Ushio, S., T. Toyota, D. Nomura, K. Naoki
The Seventh Symposium on Polar Science   30 Nov 2016   
Comparison between spaceborne L-band and C-band SAR imagery for sea ice area in the southern Sea of Okhotsk
Ishiyama, J., T. Toyota
The Seventh Symposium on Polar Science   30 Nov 2016   
Growth and decay processes deduced from the fast-ice cores collected near the Syowa Station
Toyota, T., S. Ushio, T. Tamura, D. Nomura, K. Naoki, A. Fraser
The Seventh Symposium on Polar Science   30 Nov 2016   

Works

 
Field measurements of sea ice in the southern Sea of Okhotsk
The Others   Feb 1996 - Feb 2018
Sea Ice Physics and Ecosystem eXperiment II
The Others   Sep 2012 - Nov 2012
Sea Ice Physics and Ecosystem eXperiment I
The Others   Sep 2007 - Oct 2007
Winter Weddell Outflow Studies in the Weddell Sea
The Others   Aug 2006 - Oct 2006
Experimental Voyage through Northern Sea Route
The Others   Aug 1995

Research Grants & Projects

 
Monitoring of ice thickness distribution to improve the understanding of the dynamical processes of seasonal sea ice from satellite and field observations
Japan Society for the Promotion of Science: KAKEN-HI
Project Year: Apr 2016 - Mar 2019    Investigator(s): TOYOTA Takenobu
A study on wave-ice interaction and ice foe formation processes in the marginal ice zone
Japan Society for the Promotion of Science: KAKEN-HI
Project Year: Apr 2012 - Mar 2015    Investigator(s): TOYOTA Takenobu
Development of algorithm for sea ice thickness retrieval in the seasonal sea ice zone with ALOS/PALSAR and its application to the multi-year ice regions
JAXA: ALOS data Research Programme
Project Year: Apr 2010 - Mar 2013    Investigator(s): TOYOTA Takenobu
Global mapping of sea ice production and establishment of monitoring
Japan Society for the Promotion of Science: KAKEN-HI
Project Year: Apr 2008 - Mar 2013    Investigator(s): OHSHIMA Keiichirou
Global mapping of sea ice thickness and its application to the numerical sea ice model in the seasonal ice zone
Japan Society for the Promotion of Science: KAKEN-HI
Project Year: Apr 2009 - Mar 2012    Investigator(s): TOYOTA Takenobu
Study on wave-sea ice interaction in the marginal sea ice zone and its relation with the floe size distribution
Japan Society for the Promotion of Science: NZ/JSPS scientist exchange programme
Project Year: Jul 2011 - Sep 2011    Investigator(s): TOYOTA Takenobu
Examination of a sea ice numerical model based on the real conditions of seasonal sea ice
Japan Society for the Promotion of Science: KAKEN-HI
Project Year: Apr 2006 - Mar 2009    Investigator(s): TOYOTA Takenobu
Monitoring of the processes of decreasing trend in the salinity of the Antarctic bottom water and the variability of the fresh water cycle by means of the measurement of isotopic compositions of oxygen
Japan Society for the Promotion of Science: KAKEN-HI
Project Year: Apr 2005 - Mar 2009    Investigator(s): AOKI Shigeru
A study on the release and absorption of CO2 in the atmosphere associated with sea ice growth and melting
Japan Society for the Promotion of Science: KAKEN-HI
Project Year: Apr 2005 - Mar 2008    Investigator(s): YOSHIKAWA Hisayuki
Properties of granular sea ice and the evaluation of their effects on the atmosphere and ocean
Japan Society for the Promotion of Science: KAKEN-HI
Project Year: Apr 2001 - Mar 2004    Investigator(s): KAWAMURA Toshiyuki

Social Contribution

 
Public lecture at Sapporo District Meteorological Observatory
[Lecturer]  Sapporo District Meteorological Observatory  22 Dec 2015
Project on the learning ability in Hokkaido
[Lecturer]  Sapporo Hokuryo High School  27 Jan 2015
Public lecture at Institute of Low Temperature Science
[Lecturer]  Institute of Low Temperature Science, Hokkaido University  6 Oct 2014