@Article{GuharayBatiClemSark:2014:ReExMi,
               author = "Guharay, A. and Batista, Paulo Prado and Clemesha, Barclay Robert 
                         and Sarkhel, S.",
          affiliation = "National Institute for Space Research, INPE, S{\~a}o Jos{\'e} 
                         dos Campos, S{\~a}o Paulo, Brazil and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and Radar Space Sciences Laboratory, 
                         Pennsylvania State University, 323 Electrical Engineering East, 
                         PA, United States",
                title = "Response of the extratropical middle atmosphere to the September 
                         2002 major stratospheric sudden warming",
              journal = "Advances in Space Research",
                 year = "2014",
               volume = "53",
               number = "2",
                pages = "257--265",
             keywords = "Antarctic stations, Convective activity, Extratropical latitudes, 
                         Meridional circulation, Middle atmosphere, Planetary Waves, 
                         Stratospheric sudden warmings, Temperature observations, Aerospace 
                         engineering, Space research, Upper atmosphere.",
             abstract = "The effects of a major stratospheric sudden warming (SSW) at 
                         extratropical latitudes have been investigated with wind and 
                         temperature observations over a Brazilian station, Cachoeira 
                         Paulista (22.7 S, 45 W) during September-October 2002. In response 
                         to the warming at polar latitudes a corresponding cooling at 
                         tropical and extratropical latitudes is prominent in the 
                         stratosphere. A conspicuous signature of latitudinal propagation 
                         of a planetary wave of zonal wavenumbers 1 and 2 from polar to low 
                         latitude has been observed during the warming period. The polar 
                         vortex which split into two parts of different size is found to 
                         travel considerably low latitude. Significant air mass mixing 
                         between low and high latitudes is caused by planetary wave 
                         breaking. The meridional wind exhibits oscillations of period 2-4 
                         days during the warming period in the stratosphere. No wave 
                         feature is evident in the mesosphere during the warming period, 
                         although a 12-14 day periodicity is observed after 2 weeks of the 
                         warming event, indicating close resemblance to the results of 
                         other simultaneous investigations carried out from high latitude 
                         Antarctic stations. Convective activity over the present 
                         extratropical station diminishes remarkably during the warming 
                         period. This behavior is possibly due to destabilization and shift 
                         of equatorial convective active regions towards the opposite 
                         hemisphere in response to changes in the mean meridional 
                         circulation in concert with the SSW. © 2013 COSPAR. Published by 
                         Elsevier Ltd. All rights reserved.",
                  doi = "10.1016/j.asr.2013.11.002",
                  url = "http://dx.doi.org/10.1016/j.asr.2013.11.002",
                 issn = "0273-1177 and 1879-1948",
                label = "scopus 2014-05 GuharayBatiClemSark:2014:ReExMi",
             language = "en",
           targetfile = "2014ASR_GuharaySSW.pdf",
        urlaccessdate = "28 abr. 2024"
}