@Article{RaoCarmFran:2002:SeVaSo,
               author = "Rao, Vadlamudi Brahmananda and Carmo, A. M. C. do and Franchito, 
                         Sergio Henrique",
          affiliation = "Instituto Nacional de Pesquisas Espaciais,(INPE/CPTEC) and 
                         {Instituto Nacional de Pesquisas Espaciais(INPE/CPTEC)} and 
                         {Instituto Nacional de Pesquisas Espaciais(INPE/CPTEC)}",
                title = "Seasonal variations in the Southern Hemisphere storm tracks and 
                         associated wave propagation",
              journal = "Journal of the Atmospheric Sciences",
                 year = "2002",
               volume = "59",
               number = "6",
                pages = "1029--1040",
                month = "mar.",
             keywords = "estudo do tempo e do clima, hemisferio sul, 500-mb height 
                         fluctuations, short-time scales, northern-hemisphere, baroclinic 
                         waves, upper troposphere, eddy statistics, life-cycles, wintertime 
                         circulation, upstream development, packets.",
             abstract = "Seasonal variations in the Southern Hemisphere (SH)storm track 
                         characteristics and associated wave propagation are studied using 
                         19 years of NCEP-NCAR grided data. It is found that the SH storm 
                         track is strongest in the austral autumn season and weakest in 
                         sping. The characteristics of wave packets are studied by 
                         computing 1-point lag correlation maps with unfiltered meridional 
                         wind at 300 hPa. It is found that the eastward grupo velocities of 
                         waves are much higher than the phase velocities in the transition 
                         seasons. This shows that the downstream development occurs 
                         throughout the year and is a basic feature of upper-tropospheric 
                         waves in the midlatitudes os the SH. This extends previous studies 
                         made for winter and summer seasons. Based on the indices that show 
                         wave coherence and correlations maps, it is found that the 
                         pathways in the transition seasons split into two branches east of 
                         Australia in a way similar to what happens in the zonal wind 
                         distribution.",
           copyholder = "SID/SCD",
                 issn = "0022-4928",
             language = "en",
           targetfile = "Vadlamudi_Seasonal variations.pdf",
        urlaccessdate = "25 abr. 2024"
}