@InProceedings{GomesHerdSouz:2018:OcPaAs,
               author = "Gomes, Mariah Sousa and Herdies, Dirceu Luis and Souza, Diego O.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Centro Nacional de 
                         Monitoramento e Alertas de Desastres Naturais (CEMADEN)}",
                title = "Ocean patterns associated with drought events in different sectors 
                         of the Amazon Basin",
                 year = "2018",
         organization = "International Conference for Southern Hemisphere Meteorology and 
                         Oceanography, 12. (AMOS-ICSHMO)",
             abstract = "Droughts of great proportions have been recurrent in the Amazon 
                         Basin in the last 20 years, with severe consequences for the 
                         population, altering river levels and impacting economic 
                         activities. SST anomalies in the North Atlantic Tropical (NAT) and 
                         East Equatorial Pacific oceans cause changes in atmospheric 
                         circulation patterns in remote regions, including the Amazon. 
                         Therefore, the objective of this work is to identify the oceanic 
                         conditions associated with the 1997-1998, 2005 and 2010 events in 
                         three different sectors of the region defined according to their 
                         precipitation regimes (71oW-61oW and 5oS-3oN, 61oW-51oW and 
                         5oS-3oN, 71oW-51oW and 13oS-5oS). Monthly Precipitation 
                         Climatology Project (2.5° x 2.5° resolution) and Extended 
                         Reconstructed Sea Surface Temperature (2° x 2° resolution) 
                         datasets, derived from the International Comprehensive 
                         Ocean-Atmosphere Data Set, were used. Although the first event can 
                         be considered generalized, the largest precipitation anomalies 
                         were observed in the eastern part of the basin. Rainfall was below 
                         average between February 1997 and May 1998, when one of the most 
                         intense El Niņo Southern Oscilation (ENSO) was recorded. The 2005 
                         drought was a response to a four years period of unusual reduced 
                         rainfall. Although precipitation anomalies were higher in the east 
                         between 2002 and 2004, period of moderate ENSO, they were more 
                         persistent in the west and south of the basin, mainly between 2003 
                         and 2005, presenting an important correlation with the high 
                         temperatures observed in the NAT in that period . Similar 
                         behaviour was observed during the 2010 drought; with the beginning 
                         of ENSO in mid-2009, precipitation deficit was more visible in the 
                         eastern Amazon, and became larger in the west and south the 
                         following year, when NAT temperature remained above average during 
                         practically nearly entire year. Although such relationships can be 
                         established, it is necessary to analyse changes in atmospheric 
                         circulation patterns in these regions.",
  conference-location = "Sydney, Australias",
      conference-year = "05-09 feb.",
             language = "en",
        urlaccessdate = "28 abr. 2024"
}