Blog
About

8
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      The Role of Rossby-Wave Propagation in a North American Extreme Cold Event

      , , ,

      Advances in Meteorology

      Hindawi Limited

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          The Eliassen–Palm flux and Plumb wave activity flux are calculated using the European Centre for Medium-Range Weather Forecasts interim reanalysis daily dataset to determine the propagation of Rossby waves before a North American cold wave in January 2014. The results show that the upward wave activity fluxes mainly come from planetary waves 1 and 2, which provide a stable circulation background for the influence of the subplanetary-scale waves 3 and 4. The Rossby-wave propagation anomalies between the troposphere and the stratosphere are due to the modulating effects of waves 3 and 4 on waves 1 and 2. During 9–14 January 2014, the modulating effects helped strengthen upward and eastward wave activity fluxes over the Atlantic region and enhance the Pacific high in the stratosphere in its early stage. Later in 19–24 January, the downward wave activity fluxes over the east Pacific due to the modulating effects were beneficial to downward development of the stratospheric high over the Pacific and the formation of a blocking high over the west coast of North America in the troposphere accompanied by a strong adjacent cold low on the east side. These circulations benefit the southward invasion of polar cold air reaching the lower latitudes of east North America, leading to the cold wave outbreak.

          Related collections

          Most cited references 16

          • Record: found
          • Abstract: not found
          • Article: not found

          The ERA-Interim reanalysis: configuration and performance of the data assimilation system

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Eliassen-Palm Cross Sections for the Troposphere

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              On the Three-Dimensional Propagation of Stationary Waves

               R. Alan Plumb (1985)
                Bookmark

                Author and article information

                Journal
                Advances in Meteorology
                Advances in Meteorology
                Hindawi Limited
                1687-9309
                1687-9317
                2017
                2017
                : 2017
                :
                : 1-10
                Article
                10.1155/2017/4635849
                © 2017

                http://creativecommons.org/licenses/by/4.0/

                Comments

                Comment on this article