2005 - Ph.D. (Meteorology), University of Hawaii Dissertation:
Ocean-atmosphere interaction in the seasonal to decadal variations of
tropical Atlantic climate
2000 - M.S. (Atmosphere-Ocean Science), Hokkaido University,
Sapporo, Japan
1998 - B.A. (Geophysics), Hokkaido University, Sapporo, Japan
Research Interests
Climate dynamics
Large-scale ocean-atmosphere interaction
Climate change and variability
Tropical meteorology
Scientific Work Experience
Postdoctoral Fellow, International Pacific Research Center,
University of Hawaii, Honolulu, Hawaii, January 2006–July 2006
Graduate Research Assistant, Department of Meteorology, University
of Hawaii, Honolulu, Hawaii, January 2000–December 2005
Journal Reviews
Journal of Climate, Geophysical Research Letters, Journal of the
Meteorological Society of Japan, AGU Monograph (vol. 147)
Selected Publications
Okumura, Y., S.-P. Xie, and A. Timmermann: Improving
prediction of northeast Brazil rainfall anomalies. Geophys. Res. Lett.,
in preparation.
Okumura, Y., and S.-P. Xie: Some overlooked features of tropical
Atlantic climate leading to a new Nino-like phenomenon. J. Climate,
in press.
Okumura, Y., and S.-P. Xie, 2004: Interaction of the Atlantic
equatorial cold tongue and the African monsoon. J. Climate, 17,
3589–3602.
Okumura, Y., S.-P. Xie, A. Numaguti, and Y. Tanimoto, 2001:
Tropical Atlantic air-sea interaction and its influence on the NAO.
Geophys. Res. Lett., 28, 1507–1510.