author = "Andreoli, Rita Val{\'e}ria and Silva, Simone Nazar{\'e} 
                         Rodriguez da and Souza, Rodrigo Augusto Ferreira de and Kayano, 
                         Mary Toshie and Garcia, S{\^a}mia Regina and Capistrano, 
                         Vin{\'{\i}}cius Buscioli and Armijos, Elisa",
          affiliation = "{Universidade do Estado do Amazonas (UEA)} and {Instituto Nacional 
                         de Pesquisas da Amaz{\^o}nia (INPA)} and {Universidade do Estado 
                         do Amazonas (UEA)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Universidade Federal de Itajub{\'a} (UNIFEI)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas da Amaz{\^o}nia (INPA)}",
                title = "Intense drought and flooding events in the Rio Negro and relation 
                         with the tropical Pacific and Atlantic variability modes",
              journal = "Theoretical and Applied Climatology",
                 year = "2017",
               volume = "129",
               number = "1/2",
                pages = "551--576",
                month = "July",
             abstract = "The relationship of the hydrological variability of the Rio Negro 
                         in Manaus and the dominant large-scale climate variability 
                         patterns for the 1902-2007 period is investigated using the 
                         quantile method and composite analyses. Variations of the Rio 
                         Negro Level (RNL) during its 3-month high (May to July-MJJ) and 
                         low (October to December-OND) phases are examined separately. The 
                         El Nio (La Nia) related maximum warming (cooling) in the central 
                         tropical Pacific during its mature and decaying stages modulates 
                         the atmospheric circulation in the tropics and displaces the 
                         Walker circulation cell eastward (westward), so that its sinking 
                         (rising) branch occurs over western Amazon and causes negative 
                         (positive) precipitation anomalies in this region. These anomalous 
                         climate conditions occur before the Rio Negro high phase (MJJ) and 
                         contribute to reduce (increase) the RNL and lead to a very low 
                         (very high) event in the river. On the other hand, the SST 
                         variability modes in the tropical Atlantic mainly during the 
                         transition from wet to dry season modulate the precipitation 
                         variations over western Amazon in OND. The very high events are 
                         more frequent after the 1960's decade and the very low events, 
                         before the 1930's decade. Therefore, the occurrence of these 
                         events contains a multidecadal scale variability. The results also 
                         indicate that the variations in the rainfall in western Amazon 
                         occur up to 9 months in advance and modulate the RNL in Manaus. 
                         The results presented here might be useful for monitoring purposes 
                         of the RNL.",
                  doi = "10.1007/s00704-016-1790-1",
                  url = "http://dx.doi.org/10.1007/s00704-016-1790-1",
                 issn = "0177-798X",
             language = "pt",
           targetfile = "andreoli_intense.pdf",
        urlaccessdate = "23 jan. 2021"