Recent secular variations in the January circumpolar vortex over the Northern Hemisphere are examined by digitizing the latitude at which the 546 dam isoheight at 50 kPa crosses every 10° meridian from 1947–90. A statistically significant expansion of the vortex is detected from 1966–90. Most of the expansion occurred over the North Pacific Ocean in the vicinity of the Aleutian Low and a less dramatic but significant expansion also occurred over eastern Canada and northern New England. The only region where the vortex contracted significantly is over the western United States. The trough in the western Pacific expanded eastward across the International Date Line in the past quarter century and, in conjunction with the observed contraction over the western United States, indicates amplification of 50 kPa standing waves in the Western Hemisphere. This change in circulation regimes could account for the increased frequency of warm air masses and the decreased occurrence of the coldest wintertime air masses in Alaska.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
Angell, J. K., 1992: Relation between 300-mb North Polar vortex and equatorial SST, QBO, and sunspot number and the record contraction of the vortex in 1988–89.J. Climate 5, 22–29.
Angell, J. K., Korshover, J., 1977: Estimate of the global change in temperature, surface to 100 mb, between 1958 and 1975.Mon. Wea. Rev. 105, 375–385.
Angell, J. K., Korshover, J., 1978a: The expanded north circumpolar vortex of 1976 and winter of 1976–77, and attendant vortex displacement.Mon. Wea. Rev. 106, 137–142.
Angell, J. K., Korshover, J., 1978b: Global temperature variation, surface-100 mb: an update into 1977.Mon. Wea. Rev. 106, 755–770.
Angell, J. K., Korshover, J., 1983: Global temperature variation in the troposphere and stratosphere, 1958–1982.Mon. Wea. Rev. 11, 901–921.
Balling, R. C., Jr., Lawson, M. P., 1982: Twentieth century changes in winter climatic regions.Climatic Change 4, 57–69.
Boer, G. J., Higuchi, K., 1980: A study of climatic variability.Mon. Wea. Rev. 108, 1326–1332.
Briffa, K. R., Jones, P. D., Kelly, P. M., 1990: Prinicipal component analysis of Lamb catalogue of daily weather types: part 2, seasonal frequencies and update to 1987.Int. J. Climatol. 10, 549–563.
Davis, N. E., 1972: Some aspects of circulation changes in the Northern Hemisphere in January in the 20th century.Meteor. Mag. 101, 317–329.
Davis, R. E., Benkovic, S. R., 1992: Spatial and temporal variations of the January circumpolar vortex over the Northern Hemisphere.Int. J. Climatol. (submitted).
Davis, R. E., Dolan, R., Demme, G., 1992: Synoptic climatology of Northwest Atlantic extratropical storms.Int. J. Climatol. (accepted).
Dickson, R., Namias, J., 1979: North American influences on the circulation and climate of the North Atlantic sector.Mon. Wea. Rev. 104, 1255–1265.
Douglas, A. V., Cayan, D. R., Namias, J., 1982: Large-scale changes in North Pacific and North American weather patterns in recent decades.Mon. Wea. Rev. 110, 1851–1862.
Dzerdzeevskii, B., 1962: Fluctuations of climate and of general circulation of the atmosphere in extra-tropical latitudes of the Northern Hemisphere and some problems of dynamic climatology.Tellus 14, 328–336.
Dzerdzeevskii, B., 1969: Climatic epochs in the 20th century and some comments on the analysis of past climates. In: Wright, H. E., Jr. (ed.)Quaternary Geology and Climate (Proc. 7th Congress) INQU A 16. Nat. Acad. Sci. Publ. 1701, Washington, 49–60.
Graham, R. D., 1955: An empirical study of planetary waves by means of harmonic analysis.J. Meteorol. 12, 298–307.
Granger, O. E., 1984: Twentieth century climate anomaly patterns over the southwestern United States.Phys. Geogr. 5, 164–185.
Hayden, B. P., 1981: Secular variation in Atlantic coast extratropical cyclones.Mon. Wea. Rev. 109, 159–167.
Kalkstein, L. S., Dunne, P. C., Vose, R. S., 1990: Detection of climatic change in the western North American Arctic using a synoptic climatological approach.J. Climate 3, 1153–1167.
Kalnicky, R. A., 1974: Climatic change since 1950.Ann. Assoc. Amer. Geogr. 64, 100–112.
Karl, T. R., Baldwin, R. G., Burgin, M. G., 1989:Time Series of Regional Season Averages of Maximum, Minimum, and Average Temperature, and Diurnal Temperature Range across the United States: 1901–87. Historical Climatology Series 4–5, NOAA/NESDIS/NCDC, Asheville, North Carolina, 107 pp.
Knox, J. L., Higuchi, K., Shabbar, A., Sargent, N. E., 1988: Secular variation of Northern Hemisphere 50 kPa geopotential height.J. Climate 1, 500–511.
Konrad, C. E., Colucci, S. J., 1988: Synoptic climatology of 500 mb circulation changes during explosive cyclogenesis.Mon. Wea. Rev. 116, 1431–1443.
Kutzbach, J. E., 1970: Large-scale features of monthly mean Northern Hemisphere anomaly maps of sea-level pressure.Mon. Wea. Rev. 98, 708–716.
Lamb, H. H., 1968:The Changing Climate. London: Methuen, 236 pp.
Lambert, S. J., 1990: Discontinuities in the long-term Northern Hemisphere 500-millibar heights dataset.J. Climate 3, 1476–1484.
Makrogiannis, T. J., Bloutsos, A. A., Giles, B. D., 1982: Zonal index and circulation change in the North Atlantic area, 1873–1972.J. Climatol. 2, 159–169.
Markham, C. G., 1985: A quick and direct method for estimating mean monthly global temperatures from 500 mb data.Prof. Geogr. 37, 72–74.
Michaels, P. J., Sappington, D. E., Stooksbury, D. E., Hayden, B. P., 1990: Regional 500 mb heights and U.S. 1000-500 mb thickness prior to the radiosonde era.Theor. Appl. Climatol. 42, 149–154.
Namias, J., 1980: Some concomitant regional anomalies associated with hemispherically average temperature variations.J. Geophys. Res. 85, 1585–1590.
Oort, A., 1983: Global atmospheric circulation statistics, 1958–73. NOAA Professional Paper No. 14, U.S. Government Printing Office, Washington, D.C., 150 pp.
Reiter, E. R., Westhoff, D. R., 1982: Linear trends in Northern Hemisphere tropospheric geopotential height and temperature patterns.J. Atmos. Sci. 39, 529–541.
Rogers, J. C., Rohli, R. V., 1991: Florida citrus freezes and polar anticyclones in the Great Plains.J. Climate 4, 1103–1113.
Sahsamanoglou, H. S., Makrogiannis, T. J., Kallimopoulos, P. P., 1991: Some aspects of the basic characteristics of the Siberian Anticyclone.Int. J. Climatol. 11, 827–839.
Shabbar, A., Higuchi, K., Knox, J. L., 1990: Regional analysis of Northern Hemisphere 50 kPa geopotential heights from 1946 to 1985.J. Climate 3, 543–557.
Stenger, P. J., Michaels, P. J., 1992: Climatic change in mixed-layer trajectories over large regions.Theor. Appl. Climatol. 45, 167–175.
van Loon, H., Williams, J., 1977: The connection between trends of mean temperature and circulation at the surface: part IV. Comparison of the surface changes in the Northern Hemisphere with the upper air and with the Antarctic in winter.Mon. Wea. Rev. 105, 636–647.
van Loon, H., Williams, J., 1978: The association between mean temperature and interannual variability.Mon. Wea. Rev. 106, 1012–1017.
Wallace, J. M., Gutzler, D. S., 1981: Teleconnections in the 500 mb geopotential height field during the Northern Hemisphere winter.Mon. Wea. Rev. 109, 784–812.
Yarnal, B., Leathers, D. J., 1988: Relationships between interdecadal and interannual climatic variations and their effect on Pennsylvania climate.Ann. Assoc. Amer. Geogr. 78, 624–641.
With 6 Figures
About this article
Cite this article
Davis, R.E., Benkovic, S.R. Climatological variations in the Northern Hemisphere circumpolar vortex in January. Theor Appl Climatol 46, 63–73 (1992). https://doi.org/10.1007/BF00866086
- Waste Water
- United States
- Northern Hemisphere
- Pacific Ocean