International Pacific Research Center | People

Hiroki Tokinaga

Assistant Researcher
[Past Staff]

International Pacific Research Center
School of Ocean and Earth Science and Technology
University of Hawaii
Honolulu, Hawaii 96822

Email:
Webpage: http://iprc.soest.hawaii.edu/users/tokinaga/

Education

2005 - Ph.D., Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan
2002 - M.S., Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan
2000 - B.S., College of Natural Sciences, University of Tsukuba, Tsukuba, Japan

Research Interests

Air-sea interaction in the tropics and extratropics
Ocean and atmospheric variability in mid-latitude frontal zones
Surface heat flux variability

Professional Experience

Visiting Assistant Researcher, IPRC/SOEST, University of Hawaii at Manoa, September 2009 – March 2014
Postdoctoral Fellow, IPRC/SOEST, University of Hawaii, October 2007 – August 2009
Postdoctoral Fellow, IORGC/JAMSTEC, April 2005 – September 2007
Research Assistant, Graduate School of Environmental Earth Science, Hokkaido University, May 2002 – March 2005

Refereed Publications

Tomita, H., S.-P. Xie, H. Tokinaga, and Y. Kawai, 2013: Cloud response to the meandering Kuroshio Extension front. J. Climate, 26 (23), 9393-9398, doi:10.1175/JCLI-D-13-00133.1. IPRC-1008.
Tokinaga, H., S.-P. Xie, C. Deser, Y. Kosaka, and Y.M. Okumura, 2012: Slowdown of the Walker circulation driven by tropical Indo-Pacific warming. Nature, 491, 439-443, doi:10.1038/nature11576. IPRC-935.
Cheng, X., S.-P. Xie, H. Tokinaga, and Y. Du, 2011: Interannual variability of high-wind occurrence over the North Atlantic. J. Climate, 24, 6515-6527.
Tanimoto, Y., T. Kanenari, H. Tokinaga, and S.-P. Xie, 2011: Sea level pressure minimum along the Kuroshio and its extension. J. Climate, 24, 4419-4434, doi: http://dx.doi.org/10.1175/2011JCLI4062.1.
Tokinaga, H., and S.-P. Xie, 2011: Wave and Anemometer-based Sea-surface Wind (WASWind) for climate change analysis. J. Climate, 24, 267-285.
Tokinaga, H., and S.-P. Xie, 2011: Weakening of the equatorial Atlantic cold tongue over the past six decades. Nature Geoscience, 4 (4), 222-226, doi:10.1038/ngeo1078.
Minobe, S., M. Miyashita, A. Kuwano-Yoshida, H. Tokinaga, and S.-P. Xie, 2010: Atmospheric response to the Gulf Stream: Seasonal variations. J. Climate, 23, 3699-3719.
Nagano, A., K. Ichikawa, H. Ichikawa, H. Tomita, H. Tokinaga, and M. Konda, 2010: Stable volume and heat transports of the North Pacific subtropical gyre revealed by indentifying the Kuroshio in synoptic hydrography south of Japan. J. Geophys. Res.-Oceans, 115, C09002, doi:10.1029/2009JC00574.
Xie, S.-P., Y. Du, G. Huang, X.-T. Zheng, H. Tokinaga, K. Hu, and Q. Liu, 2010: Decadal Shift in El Niño Influences on Indo-Western Pacific and East Asian Climate in the 1970s. J. Climate, 2, 3352-3368, doi: 10.1175/2010JCLI3429.1.
Xu, H., H. Tokinaga, and S.-P. Xie, 2010: Atmospheric Effects of the Kuroshio Large Meander during 2004-05. J. Climate, 23, 4704-4715.
Tanimoto, Y., S.-P. Xie, K. Kai, H. Okajima, H. Tokinaga, T. Murayama, M. Nonaka, and H. Nakamura, 2009: Observations of marine atmospheric boundary layer transitions across the summer Kuroshio Extension. J. Climate, 22 (6), 1360-1374.
Tokinaga, H., Y. Tanimoto, S.-P. Xie, T. Sampe, H. Tomita, and H. Ichikawa, 2009: Ocean frontal effects on the vertical development of clouds over the western North Pacific: In situ and satellite observations. J. Climate, 22 (16), 4241-4260.
Tokinaga, H., and S.-P. Xie, 2009: Ocean tidal cooling effect on summer sea fog over the Okhotsk Sea. J. Geophys. Res.-Atmos., 114, D14102, doi:10.1029/2008JD011477.
Xie, S.-P., K. Hu, J. Hafner, H. Tokinaga, Y. Du, G. Huang, and T. Sampe, 2009: Indian Ocean capacitor effect on Indo-western Pacific climate during the summer following El Nino. J. Climate, 22 (3), 730-747, DOI: 10.1175/2008JCLI2544.1.
Tokinaga, H., Y. Tanimoto, M. Nonaka, B. Taguchi, T. Fukamachi, S.-P. Xie, H. Nakamura, T. Watanabe, and I. Yasuda, 2006: Atmospheric sounding over the winter Kuroshio Extension: Effect of surface stability on atmospheric boundary layer structure. Geophys. Res. Lett., 33, doi:10.1029/2005GL025102.
Sato, N., H. Tokinaga, R. Shirooka, and N. Suginohara, 2006: Influence of mechanical mixing on a low summertime SST in the western North Pacific ITCZ region. Geophys. Res. Lett., 33, doi:10.1029/2006GL025997.
Tokinaga, H., Y. Tanimoto, and S.-P. Xie, 2005: SST-induced surface wind variations over the Brazil-Malvinas confluence: Satellite and in situ observations. J. Climate, 18, 3470-3482.
Tokinaga, H., and Y. Tanimoto, 2004: Seasonal transition of SST anomalies in the tropical Indian ocean during El Nino and Indian Ocean dipole years. J. Meteor. Soc. Japan, 82, 1007-1018.
Xie, S.-P., M. Nonaka, Y. Tanimoto, H. Tokinaga, H.M. Xu, W.S. Kessler, R.J. Small, W.T. Liu, and J. Hafner, 2004: A fine view from space. Bull. Amer. Meteor. Soc., 85, 1060-1062.
Xie, S.-P., J. Hafner, Y. Tanimoto, W.T. Liu, H. Tokinaga, and H.M. Xu, 2002: Bathymetric effect on the winter sea surface temperature and climate of the Yellow and East China Seas. Geophys. Res. Lett., 29, doi:10.1029/2002GL015884R.
Tanaka, H.L., and H. Tokinaga, 2002: Baroclinic instability in high latitudes induced by polar vortex: A connection to the arctic oscillation. J. Atmos. Sci., 59, 69-82.