@Article{CurtarelliAlcāRennStec:2014:PhChWi,
               author = "Curtarelli, Marcelo Pedroso and Alc{\^a}ntara, Enner Herenio de 
                         and Renn{\'o}, Camilo Daleles and Stech, Jose Luiz",
          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 = "Physical changes within a large tropical hydroelectric reservoir 
                         induced by wintertime cold front activity",
              journal = "Hydrology and Earth System Sciences",
                 year = "2014",
               volume = "18",
               number = "8",
                pages = "3079--3093",
             abstract = "We investigated the influence of wintertime cold front activity on 
                         the physical processes within a large tropical reservoir located 
                         in Brazil. The period chosen for this study consisted of 49 days 
                         between 28 April 2010 and 15 July 2010. This period was defined 
                         based on information from the Brazilian Center for Weather 
                         Forecasting and Climate Studies (CPTEC), data collected in situ 
                         and the interpretation of remotely sensed images. To better 
                         understand the governing processes that drive changes in the heat 
                         balance, differential cooling and mixing dynamics, a simulation 
                         was performed that utilized a three-dimensional hydrodynamic model 
                         enforced with in situ and remote sensing data. The results showed 
                         that during a cold front passage over the reservoir, the sensible 
                         and latent heat fluxes were enhanced by approximately 77 and 
                         16\%, respectively. The reservoir's daily averaged heat loss was 
                         up to 167\% higher on the days with cold front activity than on 
                         the days without activity. The cold front passage also intensified 
                         the differential cooling process; in some cases the difference 
                         between the water temperature of the littoral and pelagic zones 
                         reached up to 8 degrees C. The occurrence of cold front passages 
                         impacted the diurnal mixed layer (DML), by increasing the 
                         turbulent energy input (similar to 54\%) and the DML depth 
                         (similar to 41\%). Our results indicate that the cold front 
                         events are one of the main meteorological disturbances driving the 
                         physical processes within hydroelectric reservoirs located in 
                         tropical South America during the wintertime. Hence, cold front 
                         activity over these aquatic systems has several implications for 
                         water quality and reservoir management in Brazil.",
                  doi = "10.5194/hess-18-3079-2014",
                  url = "http://dx.doi.org/10.5194/hess-18-3079-2014",
                 issn = "1027-5606",
                label = "isi 2014-11 CurtarelliAlcaRennStec:2014:PhChWi",
             language = "en",
           targetfile = "hess-18-3079-2014curtarelli.pdf",
        urlaccessdate = "27 abr. 2024"
}