LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
BUSINGER, STEVEN (2011)
Publisher: Co-Action Publishing
Journal: Tellus A
Languages: English
Types: Article
Subjects:
The synoptic environments conducive to the development of polar-low outbreaks are investigated for the North Pacific region, including the Gulf of Alaska and the Bering Sea. Two case studies of polar low outbreaks are presented, using standard synoptic data, all available ship reports and satellite imagery. One case occurred over the Bering Sea, and the other over the Gulf of Alaska. The case studies show that the environments conducive to the development of strong polar lows include: a deep outflow of arctic air over open water and a cold-core, closed low aloft. Additionally, forcing from a small-scale vortex aloft is associated with the formation of strong polar lows. When synoptic conditions are favorable for the formation of polar lows, a series of them often develop in close proximity to each other. Furthermore, once favorable environmental conditions have developed, they often persist for several days and can result in several polar-low outbreaks. To develop a climatology of the synoptic environments conducive to the formation of polar lows over the Gulf of Alaska, 500 mb height, temperature, 1000–500 mb thickness and surface pressure data were composited for days when mature polar lows were present. The composite studies reveal the presence of significant negative anomalies centered over the northern Gulf of Alaska in the 500 mb temperature, height and thickness fields. These results indicate the presence of enhanced positive vorticity and the potential for deep convection over the area. The evolution of the negative-height anomaly indicates the development of a trough that results in a northerly component of the flow aloft over the Aleutian Islands and Alaska Peninsula as much as three days prior to the outbreak of polar lows. Strong northerly surface flow across open water indicated by the surface pressure composite results in small static stabilities at low levels and in the development of baroclinicity in the boundary layer through the modifying effects of surface fluxes of sensible and latent heat. Finally, a comparison is made between the climatology of polar lows over the Gulf of Alaska and over the Norwegian and Barents Seas.DOI: 10.1111/j.1600-0870.1987.tb00310.x
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Bjerknes, J . and Solberg, H. 1922. Life cycle of cyclones and the polar front theory of atmospheric circulations. Geophys. Publ. 9, 30-45.
    • Businger, S. 1985. The synoptic climatology of polar low outbreaks. Tellus 37A, 419432.
    • Businger, S . 1986. Cyclonic vortices in polar air masses. Ph.D. Thesis, University of Washington.
    • Duncan, C. N. 1977. An investigation of polar lows. Q. J. R . Meteorol. Soc. 103, 255-268.
    • Eady, E. T. 1949. Long waves and cyclone waves. Tellus I, no. 3, 33-52.
    • Emanuel, K. A. 1986. An air-sea interaction theory for tropical cyclones. Part I : steady-state maintenance. J. Atmos. Sci. 43, 585-604.
    • Harrold, T. W. and Browning, K . A. 1969. The polar low as a baroclinic disturbance. Q . J. R . Meteorol. Soc. 95, 71C723.
    • Holton, J. R. 1979. Introduction to dynamic meteorology. Academic Press, New York, 391 pp.
    • Jager, G. 1983. Satellite indicators of rapid cyclogenesis. Mariners Wea. Log. 28, 14.
    • Locatelli, J. D., Hobbs, P. V. and Werth, J. A. 1982. Mesoscale structures of vortices in polar air streams. Mon. Wea. Rev. 110, 1417-1433.
    • Mak, M . 1982. On moist quasi-geostrophic baroclinic instability. J. Atmos. Sci. 39, 2017-2027.
    • Mansfield, D. A. 1974. Polar Lows: The development of baroclinic disturbances in cold air outbreaks. Q. J. R . Meteorol. Soc. 100, 541-554.
    • Mullen, S. L. 1979. An investigation of small synoptic scale cyclones in polar airstreams. Mon. Wea. Rev. 107, 1636-1647.
    • Panofsky, H. A. and Brier, W. G . 1965. Some applications of statistics to meteorology. The Pennsylvania State University, 224 pp.
    • Rasmussen, E. 1977. The polar low as a CISKphenomenon. Report no. 6. University of Copenhagen, Institute for Theoretical Meteorology.
    • Rasmussen, E. 1981. An investigation of a polar low with a spiral cloud structure. J. Atmos. Sci. 38, 1785- 1792.
    • Rasmussen, E. 1983. A review of mesoscale disturbances in cold air masses. In Mesoscale meteorologytheories, observations and models (ed. D. K. Lilly and T. Gal-Chen). Reidel Publishing Co., 247-283, 781 PP.
    • Rasmussen, E. 1985a. A case study of a polar low development over the Barents Sea. Tellus 37A, 407- 418.
    • Rasmussen, E. 1985b. A polar low development over the Barents Sea. Technical Report No. 7 . The Norwegian Meteorological Institute, Oslo, Norway, 28 PP.
    • Rabbe, A. 1975. Arctic instability lows. Meteorologiske Annaler 6, 303-329.
    • Reed, R. J. 1979. Cyclogenesis in polar airstreams. Mon. Wea. Rec. 107, 38-52.
    • Reed, R. J. and Blier, W. 1986a. A case study of comma cloud development in the Eastern Pacific. Mon. Wea. Rev. 114, 1681-1695.
    • Reed, R. J . and Blier, W. 1986b.A further case study of comma cloud development in the Eastern Pacific. Mon. Wea. Rec. 114, 1696-1708.
    • Reed, R. J . and Duncan, C. N. 1987. Baroclinic Instability as a mechanism for the serial development of polar lows. Tellus 39A, 377-385.
    • Royer, T. C. 1975. Seasonal variations of waters in the northern Gulf of Alaska. Deep Sea Res. 22, 403416.
    • Sardie, J. M. and Warner, T. T. 1985. A numerical study of the development mechanism of polar lows. Tellus 37, 460-477.
    • Satyamurti, P., Rao, V. B. and Moura, A. D. 1982. Subsynoptic-scale baroclinic instability. J. A m o s . Sci. 39, 1052-1061.
    • Shapiro, M. A. and Fedor, L. S. 1986. The arctic cyclone expedition, 1984: Research and aircraft observations of fronts and polar lows over the Norwegian and Barents Sea, Part I . Polar lows Project. Technical Report No. 20. The Norwegian Meteorological Institute, Oslo, Norway, 56 pp.
    • Shapiro, M. A,, Fedor, L. S. and Hampel, T. 1987. Research Aircraft measurements within a polar low over the Norwegian Sea. Tellus 39A, 272--306.
    • Staley, D. 0. and Gall, R. L. 1977. On the wavelength of maximum baroclinic instability. J . Atnqos. Sci. 34, 1679-1688.
    • Sutcliffe, R. C. 1947. A contribution to the problem of development. Q.J . R . Meteorol. Soc. 73, 370-383.
    • Takioka, T. 1973. A stability study of medium-scale disturbances with inclusion of convective effects. J . Meteorol. SOC.Japan 51, 1-9.
    • Wallace, J. M. and Hobbs, P. V. 1977. Atmospheric Science: an Introductory Survey. Academic Press, 417 pp.
    • Zipzer, E. J. 1977. Mesoscale and convective-scale downdrafts as distinct components of squall-line structure. Mon. Weu. Reo. l05, 1568-1589.
  • No related research data.
  • Discovered through pilot similarity algorithms. Send us your feedback.

Share - Bookmark

Funded by projects

  • NSF | Analysis of the Cycles Data...

Cite this article

Collected from