Remember Me
Or use your Academic/Social account:


Or use your Academic/Social account:


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.


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


Verify Password:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Publisher: Co-Action Publishing
Journal: Tellus A
Languages: English
Types: Article
Middle resolution DMSP (Defense Meterological Satellite Program) visible and infrared imagery are analyzed in conjunction with surface and upper-air synoptic observations for two years' (1977, 1978/79) mid-season months (January, April, July, October) to derive synoptic climatological information on the “polar low” and “instant occlusion” phenomena. Polar-air vortices occur most frequently over the oceans in winter. Regional differences in the dominance of cloud signature sub-types confirm variations in the dynamics involved in polar-air cyclogenesis, as noted by previous workers. The “comma cloud” appears to occur more frequently in the North Pacific, while the spiraliform vortex predominates in the North Atlantic. The latter seems to be at least partly attributable to the effect of the eastern Arctic sea-ice boundary, as demonstrated by an analysis of imagery for two winters (D. J. F). each representative of an opposing mode of the North Atlantic Oscillation (1974/75. 1976/77). Composite synoptic “models” of polar lows reveal surface-pressure departures similar to those for cyclogenesis of the frontal wave type. However, a cold core and little vertical tilt distinguish the polar low in the mean. The “instant occlusion” exhibits surface-pressure departures that are deeper and comparable to the mature/dissipating stages of wave cyclone evolution. Spatial patterns of the upper-air anomalies associated with instant occlusions show two distinct vortices: one apparently derived from the polar low, the other from the incipient frontal wave with which it has merged. The seasonal and latitude-dependent cyclone intensity statistics (all types) are applied to the cloud vortex inventory of the North Atlantic-Europe sector for January 1979, The results support the rôle of the polar low as a synoptic indicator of anomalous winter circulation in the extratropics.DOI: 10.1111/j.1600-0870.1985.tb00442.x
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Carleton. A. M. 1979. A synoptic climatology of satellite-observed extratropical cyclone activity for the southern hemisphere winter. Arch. Mefeorol.Geophys. Bioklim. B2,265-279.
    • Carleton, A. M. 1981a. Climatology of the “instant occlusion” phenomenon for the southern hemisphere winter. Mon. Weu.Rea. 109, 177-181.
    • Carleton. A. M. 1981b. Monthly variability of satellitederived cyclonic activity for the southern hemisphere winter. J . Climatol. 1, 21-38.
    • Carleton. A. M. 1985. Synoptic cryosphere-atmosphere interactions in the northern hemisphere from DMSP image analysis. Int. J . Remote Sensing 6 , 239-26 1.
    • Chang, D. T. and Sherr. P. E. 1969. Cloud pattern models for extratropical cyclogenesis. Final Report, ESSA Contract E - 2 0 3 4 8 , Allied Research Associates Inc.. Concord, Mass. 146 pp.
    • Crutcher. H. L. and Meserve, J. M. 1970. Selected level heights, temperatures, and dew pointsf o r the northern hemisphere. NAVAIR 50-lC-52 (revised). Chief of Naval Operations, Washington, D.C. (January 1970).
    • Duncan, C. N. 1977. A numerical investigation of polar lows. Q.J . R . Meteorol. Soc. 103, 255-267.
    • Forbes, G. S. and Lottes. W. D. 1982. Characteristics and evolution of mesoscale cloud vortices occurring in polar airstreams, In: Preprint volume, Conference on Cloud Physics. November 15-18. 1982. Chicago. Ill. American Met. SOC.,Boston. Mass. 3 10-3 1 1 .
    • Forbes. G. S. and Lottes. W. D. 1985. Classification of mesoscale vortices in polar airstreams and the influence of the large-scale environment on their evolutions. Tellus, 37A, 132-155.
    • Gagnon. R . M. 1964. Types of winter energy budgets over the Norwegian Sea. Publications in Meteorology. 6 4 . Arctic Meteorology Research Group, Department of Meteorology, McGill University, Montreal. 75 pp.
    • Harrold. T. W . and Browning. K. A. 1969. The polar low a s a baroclinic disturbance. Q.J . R . Meteorol. Soc. 95. 7 10-723.
    • Houghton. D. M. 1958. Heat sources and sinks at the earth's surface. Meteorol. Mag. 87. 132-143.
    • 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.
    • Lyall. 1. T. 1972. The polar low over Britain. Weather 27.378-391.
    • Mansfield. D. A. 1974. Polar lows: the development of baroclinic disturbances in cold air outbreaks. Q.J . R . Meteorol. SOC1.00, 54 1-554.
    • Mullen. S. L. 1979. An investigation of small-scale cyclones in polar air streams. Mon. Wea. Rec. 107. 1636- 1647.
    • Mullen. S. L. 1983. Explosive cyclogenesis associated with cyclones in polar air streams. Mon. Wea. Rev. 111. 1537-1553.
    • Murty. T. S.. McBean. G . A. and McKee, B. 1983. Explosive cyclogenesis over the northeast Pacific Ocean. Mon. Wea. Rev. 111, 1131-1 135.
    • Oerlemans. J . 1980. A case study of a subsynoptic disturbance in a polar outbreak. Q. J . R . Meteorol. SOC.106.3 13-325.
    • Okland, H. 1976. An example of air mass transformation in the Arctic and connected disturbances of the wind field. Report DM-20, Department of Meteoroloxv, University of Stockholm, Sweden. April 1976. 30 pp.
    • Okland, H. 1977. On the intensification of small-scale cyclones formed in very cold air masses heated by the ocean. Institute Report Series No. 26, Universitetet i Oslo. Institutt f o r Geophj?sikk,August 1977. 31 pp.
    • Rabbe. A. 1975. Arctic instability lows. Meteorologiske Annaler 6 , 303. (Meteorologiske Institutt, Oslo).
    • Rasmussen, E. 1979. The polar low as an extratropical ClSK disturbance. Q. J . R . Meteorol. Soc. 105. 53 1-549.
    • Rasmussen. E. 1981. An investigation of a polar low with a spiral cloud structure. J . Atmos. Sci. 38, 1785- 1792.
    • Reed, R. J. 1979. Cyclogenesis in polar air streams. Mon. Wea. Rev. 107.38-52.
    • Sanders, F. and Gyakum, J . R. 1980. Synoptic-dynamic climatology of the "bomb". Mon. Wea. Rev. 108, 1589-1606.
    • Sardie. J . M. and Warner. T. P. 1983. On the mechanism for the development of polar lows. J . Atmos. Sci. 40. 869-881.
    • Streten. N. A. 1975. Satellite derived inferences to some characteristics of the South Pacific atmospheric circulation association with the Niiio event of 1972- 73. Mon. Wea. Rev. 103. 989-995.
    • Streten, N. A. and Kellas. W. R. 1973. Aspects of cloud pattern signatures of depressions in maturity and decay. J . Appl. Meteorol. 12. 23-27.
    • Streten. N. A. and Troup. A. J . 1973. A synoptic climatology of satellite-observed cloud vortices over the southern hemisphere. Q.J . R . Meteorol. Soc. 99. 56-72.
    • Thepenier, R-M. and Cruette. D. 1981. Formation of cloud bands associated with the American subtropical jet stream and their interaction with midlatitude synoptic disturbances reaching Europe. Mon. Wea. Rev. 109.2209-2220.
    • Troup, A. J . and Streten. N. A. 1972. Satellite-observed southern hemisphere cloud vortices in relation to conventional observations. J . Appl. Meteorol. 11. 909-9 17.
    • van Loon, H. and Rogers. J. C. 1978. The see-saw in winter temperatures between Greenland and Northern Europe. Part I : General description. Mon. Wea. Rec. 106.296-3 10.
    • Widger. W. K . 1964. A synthesis of interpretations of extratropical vortex patterns as seen by TIROS. Mon. Wea. Reu. 92. 263-282.
    • Zick. C. 1983. Method and results of an analysis of comma cloud developments by means of vorticity fields from upper tropospheric satellite wind data. Meteorol. Rundsch. 36.69-84.
    • Zwatz Meise, V. and Hailzl. G . 1983. A cloud formation process contradictory to the classical occlusion development investigated with satellite images and model output parameters. Arch. Meteorol. Geoph.vs. Bioklim. A32. 119-127.
  • No related research data.
  • No similar publications.

Share - Bookmark

Funded by projects

Cite this article

Collected from