Masahide WAKITA

Profile

Masahide WAKITA

Mutsu Institute for Oceanography, North Pacific Time-Series Research Group
Marine Biogeochemical Cycle Research Team (Additional post)

Technical Scientist

Research Interests

Temporal variations of dissolved inorganic carbon and related chemical species in the western North Pacific Ocean

Address

Mutsu Institute for Oceanography
JAMSTEC
690 Kitasekine, Sekine, Mutsu, Aomori 035-0022 JAPAN
TEL： +81-175-45-1012
FAX： +81-175-45-1079

Curriculum Vitae

1975/2 Born in Osaka
2003/6 Ph.D., Graduate School of Environmental Earth Science, Hokkaido University
2003/7～2004/3 Postdoctoral resercher, Japan Marine Science and Technology Center (JAMSTEC)
2004/4～2005/7 Postdoctoral researcher, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
2005/8～2012/3 Researcher, Mutsu Institute for Oceanography, JAMSTEC
2012/4～ Technical Scientist, Mutsu Institute for Oceanography, JAMSTEC

Publications (Peer-reviewed)

  • 1. Y. W. Watanabe, T. Ono, A. Shimamoto, T. Sugimoto, M. Wakita and S. Watanabe, Probability of a reduction in the formation rate of the subsurface water in the North Pacific during the 1980s and 1990s. Geophysical Research Letters, 28, 3289-3292, 2001.
  • 2. M. Wakita, Y. W. Watanabe, S. Watanabe, S. Noriki and M. Waktsuchi, Oceanic uptake rate of anthropogenic CO2 in a subpolar marginal sea: The Sea of Okhotsk. Geophysical Research Letters, 30, 2252, doi:10.1029/2003GL18057, 2003.
  • 3. Y. W. Watanabe, T. Ono, M. Wakita, N. Maeda, T. Gamo, Synchronous bidecadal perodic changes of dissolved oxygen, phosphate and temperature between the Japan Sea deep water and the North Pacific intermediate water. Geophysical Research Letters,30, 2273, doi:10.1029/2003GL018338, 2003.
  • 4. M. Wakita, S. Watanabe, Y. W. Watanabe, T. Ono, N. Tsurushima and S. Tsunogai, Temporal change of dissolved inorganic carbon in the subsurface water at Station KNOT(44°N、155°E) in the western North Pacific subpolar region. Journal of Oceanography, 61, 129-139, 2005.
  • 5. Kawakami, H., M. C. Honda, M. Wakita, and S. Watanabe, Time-series observation of dissolved inorganic carbon and nutrients in the northwestern North Pacific. Journal of Oceanography, 63, 967-982, 2007
  • 6. Tanaka T., S. Otosaka, M. Wakita, H. Amano and O. Togawa, Preliminary result of dissolved organic radiocarbon in the western North Pacific Ocean. Nuclear Inst. and Methods in Physics Research, B, 268, 1219-1221, 2010.
  • 7. M. Wakita, S. Watanabe, A. Murata, N. Tsurushima and M. C. Honda, Decadal change of dissolved inorganic carbon in the subarctic western North Pacific Ocean. Tellus B, doi: 10.1111/j.1600-0889.2010.00476.x , 2010.
  • 8. S. Kawaguchi, H. Kurihara, R. King, L. Hale, T. Berli, J. P. Robinson, A. Ishida, M. Wakita, P. Virtue, S. Nicol, A. Ishimatsu, Will krill fare well under Southern Ocean acidification?, Biology Letters, doi: 10.1098/rsbl.2010.0777, 2010.
  • 9. Matsumoto, K., T. Fujiki, M. C. Honda, M. Wakita, H. Kawakami, M. Kitamura and T. Saino, Inhibition of primary production by nitrile rubber O-rings in Niskin sampler, JAMSTEC Report of Research and Development, 14, 17-25, 2012 (in Japanese with English abstract).

Publications (Not reviewed)

  • 1. S. Watanabe S., T. Tanaka, K. Okuda, T. Ono, N. Tsurushima, M. Wakita and S. Tsunogai, Carbonate system of the western North Pacific. Proceedings of the Second International symposium on CO2 in the Oceans, ed. by Y. Nojiri, National Institute of Environmental Studies, Tsukuba, Japan, 207-211, 1999.
  • 2. S. Tsunogai, S. Watanabe, A. Otsuki, N. Nakayama, T. Tanaka, M. Wakita, K. Igarashi and Y. Nakano, CO2 budget in the Pacific water having a large potential sink capacity and four processes absorbing much anthropogenic CO2. International Symposium on Carbon Cycle in the North Pacific, Nagoya, Japan, 22-23, 2000.
  • 3. M. Wakita, S. Watanabe, K. Igarashi, S. Tsunogai and M. Wakatsuchi, Carbonate system in the Sea of Okhotsk. Proceedings of the International Symposium on Atmosphere-Ocean-Cryosphere Interaction in the Sea of Okhotsk and the Surrounding Environment, ed. by M. Wakatsuchi and T. Hara, Inst. of Low Temp. Science, Hokkaido Univ., Sapporo, Japan, 82-83, 2001.
  • 4. S. Watanabe, M. Wakita, K. Igarashi, S. Tsunogai and M. Wakatsuchi, Spatial distribution of carbon dioxide fugacity in the Sea of Okhotsk. Proceedings of the International Symposium on Atmosphere-Ocean-Cryosphere Interaction in the Sea of Okhotsk and the Surrounding Environment, ed. by M. Wakatsuchi and T. Hara, Inst. of Low Temp. Science, Hokkaido Univ., Sapporo, Japan, 102-103, 2001.
  • 5. S. Tsunogai, S. Watanabe, A. Otsuki, M. Yamamoto, M. Wakita and K. Igarashi, Carbonate system of the Okhotsk Sea. International Symposium on Carbon and Nutrient Fluxes in Marginal Seas and Tropical Coastal Zones, ed. by K. K. Liu, Taipei, D 34-36, 2001.
  • 6. M. Wakita, The increase rate of CO2 in the western subarctic North Pacific and the Okhotsk Sea. Ph.D. thesis, Hokkaido University, 2003.
  • 7. 本多牧生、川上創、松本和彦、脇田昌英、渡邉修一、Station K2における係留系、観測船を用いた生物ポンプ研究と今後の展望、月刊海洋、vol.39、No.2、68-79、2007.
  • 8. M. Wakita, S. Watanabe, A. Murata, N. Tsurushima and M. C. Honda, Decadal change of dissolved inorganic carbon along 155°E in the western North Pacific Ocean. 8th International Carbon Dioxide Conference, Jena, Germany, Extended Abstract, T2-073, 2009.
  • 9. 脇田昌英、北部北太平洋における炭素循環－物質移動と変化－、第3回JAMSTEC 海洋と地球の学校、39-46、2009.
  • 10. 脇田昌英、北西太平洋はCO2の放出域から吸収域へ転換する？ Blue Earth、109、6-7、2010.
  • 11. Y. Nakano, T. Fujiki, M. Wakita, K. Azetsu-Scott and S. Watanabe, In situ chemical pCO2 sensor with autonomous drifting buoy system. In Proceedings of the “OceanObs’09: Sustained Ocean Observations and Information for Society” Conference (Annex), Venice, Italy, 21-25 September 2009, Hall, J., Harrison D.E. and Stammer, D., Eds., ESA Publication WPP-306, 2010.
  • 12. H. Uchida, A. Murata, M. Wakita, Y. Kumamoto, Y. Nagasawa, H. Mitsuda, M. Aoyama and T. Kawano, Development of a small and fast-responding optode sensor for standardization of dissolved oxygen measurements, IUPAC International Congress on Analytical Sciences 2011, 26 May 2011, abstract, http://www.jamstec.go.jp/seika/pub-j/res/ress/huchida/data/papers/26aE-07.pdf.
  • 13. 脇田昌英、海洋における炭素物質循環－大気・海洋間二酸化炭素交換－、第6回JAMSTEC 海洋と地球の学校、31-36、2011.

Database

  • 1. S. Watanabe S., M. C. Honda, A. Murata and M. Wakita, Hydrograhic Data at Station K2 between 2001 and 2006. Data and Documentation - http://www.jamstec.go.jp/k2/, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan., Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy, Oak Ridge, Tennessee. 2007.
  • 2. K. Sasaki, M. Wakita, S. Watanabe, K. Sagishima, Y. Sonoyama, H. Yamamoto, K. Wataki and M. Enoki, Hydrographic measurement techniques and calibrations- Chlorofluorocarbons (CFCs), in WHP P03 REVISIT DATA BOOK, edited by T. Kawano and H. Uchida, Aiwa Printing Co. Ltd., Kanagawa, Japan, 104–106, 2007.
  • 3. K. Sasaki, M. Wakita, K. Sagishima and H. Yamamoto, Hydrographic measurement techniques and calibrations- Chlorofluorocarbons (CFCs), in WHP P10 REVISIT DATA BOOK, edited by T. Kawano and H. Uchida, Ryoin Co. Ltd., Kanagawa, Japan, 65–67, 2007.
  • 4. K. Sasaki, Y. W. Watanabe, S. Watanabe, M. Wakita, S. Tanaka, K. Sagishima, Y. Sonoyama, H. Yamamoto and K. Wataki, Hydrographic measurement techniques and calibrations- Chlorofluorocarbons (CFCs), in WHP P6, A10, I3/I4 REVISIT DATA BOOK - Blue Earth Global Expedition 2003 (BEAGLE2003), vol. 3, edited by Y. Kumamoto and S. Watanabe, Ryoin Co. Ltd., Kanagawa, Japan, 1–4, 2007.
  • 5. K. Sasaki, M. Wakita, K. Sagishima, Y. Sonoyama and S. Tatamisashi, Hydrographic measurement techniques and calibrations- Chlorofluorocarbons (CFCs), in WHP P01, P14 REVISIT DATA BOOK, edited by T. Kawano, H. Uchida and T. Doi, Ryoin Co. Ltd., Kanagawa, Japan, 99–101, 2009.
  • 6. M. Wakita, S. Watanabe, A. Murata, M.Honda, Hydrographic and CO2 Data Report at Station K2. http://www.godac.jamstec.go.jp/k2/, Japan Agency for Marine-Earth Science and Technology, http://cdiac.ornl.gov/ftp/oceans/Moorings/TS_K2/. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy, Oak Ridge, Tennessee,  doi: 10.3334/CDIAC/otg.TSM_K2_1999-2008, 2010.
  • 7. M. Wakita, S. Watanabe, A. Murata, M. Honda, and N. Tsurushima, Hydrographic and CO2 Data Report at Station KNOT. http://www.godac.jamstec.go.jp/k2/, Japan Agency for Marine-Earth Science and Technology, http://cdiac.ornl.gov/ftp/oceans/Moorings/KNOT/. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy, Oak Ridge, Tennessee, doi: 10.3334/CDIAC/otg.TSM_KNOT_1992-2008, 2010.

Competitive budget

  • Grant-in-Aid for Scientific Research in Innovative Areas (Supplementary Programs) : MEXT
    Clarification of ocean acidification in the western subarctic North Pacific Ocean (2013-2015)