• Baines, P. J., 1995: Topographic Effects in Stratified Flows. Cambridge University Press, 482 pp.

  • Bourassa, M. A., M. H. Freilich, D. M. Legler, W. T. Liu, and J. J. O’Brien, 1997: Wind observations from new satellite and research vessels agree. Eos, Trans. Amer. Geophys. Union,78, 51.

    • Crossref
    • Export Citation
  • Businger, S., and R. J. Reed, 1989: Cyclogenesis in cold air masses. Wea. Forecasting,4, 133–156.

    • Crossref
    • Export Citation
  • Carleton, A. M., and Y. Song, 1997: Synoptic climatology and intrahemispherical associations, of cold air mesocyclones in the Australasian sector. J. Geophys. Res.,102, 13 873–13 887.

    • Crossref
    • Export Citation
  • Chopra, K. P., 1973: Atmospheric and oceanic flow problems introduced by islands. Advances in Geophysics, Vol. 16, Academic Press, 16, 297–421.

    • Crossref
    • Export Citation
  • Emanuel, K. A., 1986: An air–sea interaction theory for tropical cyclones. Part I: Steady state maintenance. J. Atmos. Sci.,43, 585–604.

    • Crossref
    • Export Citation
  • Gjevik, B., 1980: Orographic effects revealed by satellite pictures: mesoscale flow phenomena. Orographic Effects in Planetary Flows, GARP Publ. 23, 301–316.

  • Holton, J. R., 1972: An Introduction to Dynamic Meteorology. Academic Press, 319 pp.

  • Laing, A. K., and E. Brenstrum, 1996: Scatterometer observations of low-level wind jets over New Zealand coastal waters. Wea. Forecasting,11, 458–475.

    • Crossref
    • Export Citation
  • ——, and S. J. Reid, 1998: Hindcasting waves from storms in the Tasman Sea. Proc. Fifth Int. Conf. on Wave Hindcasting and Forecasting, Melbourne, FL, Environment Canada, 88–101.

  • ——, S. J. Reid, and G. Hooper, 1997a: Wave conditions in the Karamea Bight from measurements and modelling. Pacific Coasts and Ports ’97, Proc. 13th Australasian Coastal and Ocean Eng. Conf., Christchurch, New Zealand, New Zealand Coastal Society, 989–994.

  • ——, M. J. Revell, and E. Brenstrum, 1997b: ERS scatterometer observations of airflow around mountainous islands. Proc. Third ERS Symp. on Space at the Service of Our Environment, Florence, Italy, European Space Agency, 1579–1584.

  • Levinson, D. H., and R. M. Banta, 1998: Near-shore marine boundary layer wind variability measured by a pulsed doppler lidar. Preprints, Second Conf. on Coastal Atmospheric and Oceanic Prediction and Processes, Phoenix, AZ, Amer. Meteor. Soc., 152–156.

  • McGregor, J., C. J. Marks, and R. D. Stainer, 1992: Animating satellite imagery. Weather,47, 423–430.

    • Crossref
    • Export Citation
  • Nuss, W. A., 1998: Synoptic-scale structure and the character of coastally-trapped disturbances. Preprints, Second Conf. on Coastal Atmospheric and Oceanic Prediction and Processes, Phoenix, AZ, Amer. Meteor. Soc., 186–193.

  • Revell, C. G., 1983: High resolution satellite imagery of the New Zealand area: A view of meso-scale cloud vortices. Wea. Climate,3, 11–19.

    • Crossref
    • Export Citation
  • Rasmussen, E. A., T. S. Pedersen, L. T. Pedersen, and J. Turner, 1992:Polar lows and arctic instability lows in the Bear Island region. Tellus,44A, 133–154.

    • Crossref
    • Export Citation
  • Smith, R. B., 1982: Synoptic observations and theory of orographically disturbed wind and pressure. J. Atmos. Sci.,39, 60–70.

    • Crossref
    • Export Citation
  • Stanton, B. R., 1998: Ocean surface winds off the west coast of New Zealand: A comparisons of ocean buoy, ECMWF model, and land-based data. J. Atmos. Oceanic Technol.,15, 1164–1170.

    • Crossref
    • Export Citation
  • Thompson, W. T., and J. M. Bane, 1998: Modeling and observations of coastally trapped wind reversals. Preprints, Second Conf. on Coastal Atmospheric and Oceanic Prediction and Processes, Phoenix, AZ, Amer. Meteor. Soc., 194–201.

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 142 10 0
PDF Downloads 10 6 0

Evidence of Mesoscale Lows off the West Coast of New Zealand

View More View Less
  • 1 National Institute of Water and Atmospheric Research, Wellington, New Zealand
Restricted access

Abstract

Mesoscale lows are observed off the central west coast, South Island, New Zealand. These features are evidenced in pressure dips measured at a buoy moored about 50 km off the west coast. They do not appear in measurements from coastal stations. Wind data at the buoy show complex variations sometimes consistent with the passage of cyclonic vortices in the flow. Further, wind data from satellite scatterometers often indicate high spatial variability near the buoy at the time of these pressure dips, and satellite imagery depicts cloud movements consistent with small-scale cyclonic circulations near the coast. These features are often observed in the cool air after the passage of a trough or front.

Corresponding author address: Dr. Andrew K. Laing, National Institute of Water and Atmospheric Research, 301 Evans Bay Parade, Greta Point, P.O. Box 14-901, Wellington, New Zealand.

Email: a.laing@niwa.cri.nz

Abstract

Mesoscale lows are observed off the central west coast, South Island, New Zealand. These features are evidenced in pressure dips measured at a buoy moored about 50 km off the west coast. They do not appear in measurements from coastal stations. Wind data at the buoy show complex variations sometimes consistent with the passage of cyclonic vortices in the flow. Further, wind data from satellite scatterometers often indicate high spatial variability near the buoy at the time of these pressure dips, and satellite imagery depicts cloud movements consistent with small-scale cyclonic circulations near the coast. These features are often observed in the cool air after the passage of a trough or front.

Corresponding author address: Dr. Andrew K. Laing, National Institute of Water and Atmospheric Research, 301 Evans Bay Parade, Greta Point, P.O. Box 14-901, Wellington, New Zealand.

Email: a.laing@niwa.cri.nz

Save