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Journal of Oceanography

, Volume 63, Issue 6, pp 953–966 | Cite as

Case study of wind jet transition and localized responses of wind wave along the pacific coast of Northern Japan by synergetic use of satellite and in situ observations

  • Teruhisa Shimada
  • Hiroshi Kawamura
Original Articles

Abstract

We present a case study of low-level wind jets induced in sequence by orographic effects off the Pacific coast of northern Japan during 7–11 June 2003, and demonstrate that the transition of the wind jets causes areal differences of wave height variations along the coast. First, we describe evolution and structure of the wind jet by analyzing SeaWinds scatterometer wind measurements. Under the easterly wind, a strong wind jet formed after passing by Cape Erimo. As the wind shifted to the southeast, the wind jet started to decay. In turn, the southerly wind along the coast led to another wind jet in the lee of the easternmost tip of the Sanriku coast. We then identify onsets and decays of the wind jets from time series of wind speed at meteorological stations. Finally, we demonstrate that the transition of the wind jets has local impacts on wave height variations. Significant wave heights measured by altimeters were correlated positively with local wind energy, i.e., squares of wind speeds. Accompanying the wind jet formation/decline, significant differences of wave height variations became marked among wave observation stations located along the coast at intervals of up to 50 km.

Keywords

Wind jet wind wave Cape Erimo Sanriku coast SeaWinds NOWPHAS 

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References

  1. Arakawa, S. (1969): Climatological and dynamical studies on the local strong winds, mainly in Hokkaido, Japan. Geophy. Mag., 34, 359–425.Google Scholar
  2. Chelton, D. B., M. H. Freilich and S. K. Esbensen (2000a): Satellite observation of the wind jets off the Pacific coast of Central America. Part I: Case studies and statistical characteristics. Mon. Wea. Rev., 128, 1993–2018.CrossRefGoogle Scholar
  3. Chelton, D. B., M. H. Freilich and S. K. Esbensen (2000b): Satellite observation of the wind jets off the Pacific coast of Central America. Part II: Regional relationships and dynamical consideration. Mon. Wea. Rev., 128, 2019–2043.CrossRefGoogle Scholar
  4. Doyle, J. D. and M. A. Shapiro (1999): Flow response to largescale topography: The Greenland tip jet. Tellus, 51A, 728–748.Google Scholar
  5. Ebuchi, N. (2006): Evaluation of marine surface winds observed by SeaWinds and AMSR on ADEOS-II. J. Oceanogr., 62, 293–301.CrossRefGoogle Scholar
  6. Ebuchi, N., H. C. Graber and M. J. Caruso (2002): Evaluation of wind vectors observed by QuikSCAT/SeaWinds using ocean buoy data. J. Atmos. Oceanic Technol., 19, 2049–2062.CrossRefGoogle Scholar
  7. Haack, T., S. D. Burk, C. Dorman and D. Rogers (2001): Supercritical flow interaction within the Cape Blanco-Cape Mendocino orographic complex. Mon. Wea. Rev., 129, 688–708.CrossRefGoogle Scholar
  8. Liu, W. T. (2002): Progress in scatterometer application. J. Oceanogr., 58, 121–136.CrossRefGoogle Scholar
  9. Moore, G. W. K. and I. A. Renfrew (2005): Tip jets and barrier winds: A QuikSCAT climatology of high wind speed events around Greenland. J. Climate, 18, 3713–3725.CrossRefGoogle Scholar
  10. Ninomiya, K. and H. Mizuno (1985): Anomalously cold spell in summer over Northeastern Japan caused by northeasterly wind from polar maritime air-mass. Part 2. Structure of the north-easterly flow from polar maritime airmass. J. Met. Soc. Japan, 63, 859–871.Google Scholar
  11. Pickart, R. S., M. A. Spall, M. H. Ribergaard, G. W. K. Moore and R. F. Milliff (2003): Deep convection in the Irminger Sea forced by the Greenland tip jet. Nature, 424, 152–156.CrossRefGoogle Scholar
  12. Samelson, R. M. (1992): Supercritical marine-layer flow along a smoothly varying coastline. J. Atmos. Sci., 49(17), 1571–1584.CrossRefGoogle Scholar
  13. Shimada, T. and H. Kawamura (2004): Wind jets and wind waves off the Pacific coast of northern Japan under winter monsoon captured by combined use of scatterometer, SAR and altimeter. J. Geophys. Res., 109, C12027, doi:10.1029/ 2004JC002450.Google Scholar
  14. Takai, H., H. Kawamura and O. Isoguchi (2006): Characteristics of the Yamase Winds over oceans around Japan observed by the scatterometer-derived ocean surface vector winds. J. Met. Soc. Japan, 84(2), 365–373.CrossRefGoogle Scholar
  15. Winstead, N. S., T. D. Sikora, D. R. Thompson and P. D. Mourad (2002): Direct influence of gravity waves on surface-layer stress during a cold air outbreak, as shown by synthetic aperture radar. Mon. Wea. Rev., 130, 2764–2776.CrossRefGoogle Scholar
  16. Winstead, N. S., B. A. Colle and N. Bond (2004): Synthetic Aperture Radar and high-resolution MM5 simulations of barrier jets in coastal Alaska. Proceedings of IEEE International of Geoscience and Remote Sensing Symposium.Google Scholar

Copyright information

© The Oceanographic Society of Japan/TERRAPUB/Springer 2007

Authors and Affiliations

  1. 1.Ocean Environment Group, Center for Atmospheric and Oceanic Studies, Graduate School of ScienceTohoku UniversityAramaki Aza Aoba, Aoba-ku, Sendai, MiyagiJapan

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