@Article{StefanelloRBRFFBHATRD:2023:ImAtBo,
               author = "Stefanello, Michel and Rosa, Cinara Ewerling da and Bresciani, 
                         Caroline and Reis, Nicolle Cordero Sim{\~o}es dos and Facco, 
                         Douglas Stefanello and Ferraz, Simone E. Teleginski and Boiaski, 
                         Nathalie Tissot and Herdies, Dirceu Luis and Acevedo, Ot{\'a}vio 
                         and Tirabassi, Tiziano and Roberti, D{\'e}bora Regina and 
                         Degrazia, Gerv{\'a}sio Annes",
          affiliation = "{Universidade Federal de Santa Maria (UFSM)} and {Instituto 
                         Federal Farroupilha} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Universidade Federal de Santa Maria (UFSM)} 
                         and {Universidade Federal do Rio Grande do Sul (UFRGS)} and 
                         {Universidade Federal de Santa Maria (UFSM)} and {Universidade 
                         Federal de Santa Maria (UFSM)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Universidade Federal de Santa 
                         Maria (UFSM)} and {Universidade Federal de Santa Maria (UFSM)} and 
                         {Universidade Federal de Santa Maria (UFSM)} and {Universidade 
                         Federal de Santa Maria (UFSM)}",
                title = "Spatial–temporal analysis of a summer heat wave associated with 
                         downslope flows in southern Brazil: implications in the 
                         atmospheric boundary layer",
              journal = "Atmosphere",
                 year = "2023",
               volume = "14",
               number = "1",
                pages = "e64",
                month = "Jan.",
             keywords = "atmospheric boundary layer, downslope winds, heat wave, regional 
                         meteorology, topography effect.",
             abstract = "This study investigates a summer heat wave (HW) associated with 
                         downslope winds (DWs) affecting the central region of the state of 
                         Rio Grande do Sul (RS), Brazil. The temporal evolution of both 
                         phenomena is analyzed in the atmospheric boundary layer (ABL) 
                         using a combination of micrometeorological and rawinsonde data. 
                         For spatial characterization, ERA-5 reanalysis data are used. The 
                         HW covered a large area in southern Brazil, Argentina, and 
                         Paraguay. The main features of the HW were locally enhanced in the 
                         central region of RS by the development of DWs. The establishment 
                         of DWs near the surface depends on the dynamics of the ABL and 
                         local topographic features. The results showed that DWs that 
                         occurred during the HW contributed to the extreme temperatures and 
                         were associated with strong northerly winds, low relative 
                         humidity, and a drop in the dew points. Together, these extreme 
                         events influenced the turbulent and mean flow patterns of the ABL. 
                         The increase in turbulent activity associated with the warming of 
                         the ABL favored enhanced growth of morning ABL, while at night the 
                         simultaneous effects of radiative and turbulence cooling inhibited 
                         the formation of a strong stable ABL. The analysis highlights the 
                         complex interplay of synoptic and local factors associated with 
                         DWs and HW.",
                  doi = "10.3390/atmos14010064",
                  url = "http://dx.doi.org/10.3390/atmos14010064",
                 issn = "2073-4433",
             language = "en",
           targetfile = "atmosphere-14-00064.pdf",
        urlaccessdate = "01 maio 2024"
}