author = "Azambuja, Rodrigo da Rosa and Zepka, Gisele dos Santos and Vargas 
                         Junior, Vanderlei Rocha de and Pinto J{\'u}nior, Osmar",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Lightning Activity in Mesoscale Convective System associated with 
                         Different Synoptic Situations over Southern South America",
            booktitle = "Proceedings...",
                 year = "2014",
         organization = "International Lightning Detection Conference, 23. (ILDC); and 
                         International Lightning Meteorology Conference, 5 (ILMC).",
             keywords = "lightning, mesoscale convective systems, synoptic analysis.",
             abstract = "Two Mesoscale Convective System (MCS) events that occurred in the 
                         southern portion of South America will be analyzed in order to 
                         characterize the local lightning activity related with different 
                         synoptic situations. On December 10-11, 2012, a MCS, originated by 
                         a cyclone centered over the Atlantic Ocean, presented an organized 
                         convective activity moving northeastward. This MCS formed in an 
                         area of baroclinic flow in the vanguard of a cold front. This 
                         feature was trivial in determining MCS displacement velocity, and 
                         consequently lightning density in the region. The other MCS that 
                         occurred on December 12-13, 2012 was generated by a low pressure 
                         area located in the central region of South America (Chaco Low), 
                         and showed disorganized convective activity moving 
                         (northwestward). This MCS formed due mainly thermodynamic factors 
                         in the lower troposphere and divergence in the upper troposphere 
                         by the interaction of the subtropical jet. In both MCSs lightning 
                         density in the region was influenced by the synoptic situation 
                         which the MCS was formed. Being influenced by the velocity and 
                         direction of MCS displacement. The rate of occurrence and polarity 
                         of lightning as well as the IC/CG and CG+/CG- rates were not 
                         affected by the different conditions that the MCSs were formed.The 
                         data set used in the present study will consider: (1) lightning 
                         location and polarity from BrasilDAT, (2) analysis and forecasts 
                         from WRF model, and (3) infrared channel data from Satellite 
  conference-location = "Tucson",
      conference-year = "mar. 18-19, 2014 / mar. 20-21, 2014",
                label = "lattes: 3066488941709713 1 AzambujaZepkVargPint:2014:LiAcMe",
             language = "pt",
           targetfile = "Azambuja et al - Lightning Activity in MCS over Southern South 
        urlaccessdate = "27 jan. 2021"