@Article{SantosCarBorGasBor:2021:IsCoPr,
               author = "Santos, Cleber Assis dos and Carneiro, Rayonil and Borges, Camilla 
                         and Gastmans, Didier and Borma, Laura de Simone",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal 
                         de Campina Grande (UFCG)} and {Universidade Estadual Paulista 
                         (UNESP)} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Isotopic composition of precipitation in a southeastern region of 
                         Brazil during the action of the south Atlantic convergence zone",
              journal = "Atmosphere",
                 year = "2021",
               volume = "12",
               number = "4",
                pages = "e418",
                month = "Apr.",
             keywords = "moisture of Amazon, stable isotopes \δ,,, 2H and \δ,,, 
                         18O, tropical region, precipitation, Brazil.",
             abstract = "The use of stable isotopes of hydrogen and oxygen is a tool widely 
                         used to trace water paths along the hydrological cycle, providing 
                         support for understanding climatic conditions in different spatial 
                         scales. One of the main synoptic scale events acting in 
                         southeastern Brazil is the South Atlantic Convergence Zone (SACZ), 
                         which causes a large amount of precipitation from southern 
                         Amazonia to southeastern Brazil during the southern summer. In 
                         order to determine the isotopic composition of precipitation 
                         during the action of SACZ in S{\~a}o Francisco Xavier in 
                         southeastern Brazil, information from the Weather Forecasting and 
                         Climate Studies Center of the National Institute for Space 
                         Research (CPTEC) was used regarding SACZ performance days, the 
                         retrograde trajectories of the HYSPLIT model, and images from the 
                         GOES-16 satellite, in addition to the non-parametric statistical 
                         tests by Spearman and Kruskal-Wallis. A high frequency of air mass 
                         trajectories from the Amazon to southeastern Brazil was observed 
                         when the SACZ was operating. During the SACZ events, the average 
                         isotopic composition of precipitation was more depleted, with a 
                         \δ18O of \−9.9 (±2.1), a \δ2H of \−69.3 
                         (±17.9), and d-excess of 10.1 (±4.0). When disregarding the SACZ 
                         performance, the annual isotopic composition can present an 
                         enrichment of 1.0 for \δ18O and 8.8 for the \δ2H. The 
                         long-term monitoring of trends in the isotopic composition of 
                         precipitation during the SACZ events can assist in indicating the 
                         evapotranspiration contribution of the Amazon rainforest to the 
                         water supply of southeastern Brazil.",
                  doi = "10.3390/atmos12040418",
                  url = "http://dx.doi.org/10.3390/atmos12040418",
                 issn = "2073-4433",
             language = "en",
           targetfile = "santos_isotopic.pdf",
        urlaccessdate = "07 maio 2024"
}