Ph.D., Meteorology, University of Hawaii, Honolulu, Hawaii, 2005

  "Ocean-atmosphere interaction in the seasonal to decadal variations of tropical Atlantic climate"


M.S., Ocean-Atmosphere Science, Hokkaido University, Sapporo, Japan, 2000

  "Ocean-atmosphere and tropical-extratropical interactions in the pan-Atlantic decadal oscillations"


B.S., Geophysics, Hokkaido University, Sapporo, Japan, 1998

  "Review of theoretical and observational studies on teleconnections associated with El Nino-Southern Oscillation"

Education

Contact

Mailing Address  P.O. Box 3000, Boulder, CO 80307-3000

Street Address 1850 Table Mesa Drive, Boulder, CO 80305

Phone (303) 497-1770; Fax  (303) 497-1333

E-mail  yukoo (at) ucar.edu

My Family at Goleta Beach, Santa Barbara (December 2008)

I am a post-doctoral fellow working with Dr. Clara Deser

in the Climate Analysis Section, within the Climate and Global Dynamics Division at NCAR.


My research interests include large-scale ocean-atmosphere interactions, climate variability on seasonal to interdecadal time scales, paleoclimate and thermohaline circulation.

  1. BulletTimmermann, A., L. Menviel, Y. Okumura, A. Schilla, U. Merkel, O. Timm, A. Hu, B. Otto-Bliesner, and M. Schulz, 2009: Towards a quantitative understanding of millennial-scale Antarctic warming events. Quaternary Science Reviews, revised.

  2. BulletHodson, D. L. R., R. T. Sutton, C. Cassou , N. Keenlyside, Y. Okumura, and T. Zhou, 2009: Climate impacts of recent multidecadal changes in Atlantic Ocean sea surface temperature: A multimodel comparison. Climate Dynamics, in press.

  3. BulletZhou, T., R. Yu, J. Zhang, H. Drange, C. Cassou, C. Deser, D. L. R. Hodson, E. SanchezGomez, J. Li, N. Keenlyside, X. Xin, and Y. Okumura, 2009: Why the western Pacific subtropical high has extended westward since the late 1970s. J. Climate, 22, 2199-2215.

  4. BulletOkumura, Y. M., C. Deser, A. Hu, A. Timmermann, and S.-P. Xie, 2009: North Pacific climate response to a rapid weakening of the Atlantic meridional overturning circulation: Oceanic and atmospheric pathways. J. Climate, 22, 1424-1445.

  5. BulletSanchezGomez E., C. Cassou, D. L. R. Hodson, N. Keenlyside, Y. Okumura, and T. Zhou 2008: North Atlantic weather regimes response to Indian-western Pacific Ocean warming: A multi-model study. Geophys. Res. Lett., 35, L15706, doi:10.1029/2008GL034345.

  6. BulletXie, S.-P., Y. Okumura, T. Miyama, and A. Timmermann, 2008: Influences of Atlantic climate change on the tropical Pacific via the Central American Isthmus. J. Climate, 21, 3914–3928.

  7. BulletTimmermann, A., Y. Okumura, S.-I. An, A. Clement, B. Dong, E. Guilyardi, A. Hu, J. H. Jungclaus, M. Renold, T. F. Stocker, R. J. Stouffer, R. Sutton, S.-P. Xie, and J. Yin, 2007: The influence of a weakening of the Atlantic meridional overturning circulation on ENSO. J. Climate, 20, 4899-4919.

  8. BulletOkumura, Y., and S.-P. Xie, 2006: Some overlooked features of tropical Atlantic climate leading to a new Nino-like phenomenon. J. Climate, 19, 5859-5874.

  9. BulletOkumura, Y., and S.-P. Xie, 2004: Interaction of the Atlantic equatorial cold tongue and the African monsoon. J. Climate, 17, 3589-3602.

  10. BulletOkumura, 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.

Publications

Scientific Work Experience

NOAA Climate and Global Change Postdoctoral Fellow, National Center for Atmospheric Research

  Boulder, Colorado, September 2006-present


Postdoctoral Fellow, International Pacific Research Center, University of Hawaii

  Honolulu, Hawaii, January 2006-July 2006


Research Assistant, Department of Meteorology, University of Hawaii

  Honolulu, Hawaii, January 2000-December 2005

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