@Article{ChouSilv:1999:ObEvET,
               author = "Chou, Sin Chan and Silva, Maria G. A. Justi da",
          affiliation = "{CPTEC-INPE-Cachoeira Paulista-12630-000-SP-Brasil}",
                title = "Objective evaluation of ETA Model precipitation forecasts over 
                         South America",
              journal = "Climan{\'a}lise - Boletim de Monitoramento e An{\'a}lise 
                         Clim{\'a}tica",
                 year = "1999",
               volume = "1",
               number = "1",
                pages = "1--17 / on line",
             abstract = "Equitable Threat Score (ETS) and Bias Score (BIAS) were calculated 
                         for the regional Eta model precipitation forecasts for the period 
                         from February 1997 through January 1998. The scores were also 
                         calculated separately for three regions over the continent, North, 
                         Northeast, and Centre-south, for each month, and for each season 
                         of the year, and for the different forecast ranges: T+24h, T+36h, 
                         T+48h and T+60h. During this year, North and Centre-south, regions 
                         showed higher ETS, although BIAS tended to indicate overestimate 
                         of weak and moderate rain. During autumn, the scores over 
                         Northeast region were higher compared to the other two regions. 
                         The ETS showed no significant differences for the different 
                         forecast ranges, however, BIAS were generally larger at shorter 
                         range forecasts. Forecasts with initial conditions at 12 UTC 
                         resulted in better scores than forecasts starting at 00 UTC when 
                         the number of observations are reduced over the continent.",
           copyholder = "SID/SCD",
                 issn = "0103-0019",
             language = "en",
           targetfile = "ets.html",
                  url = "http://www.cptec.inpe.br/products/climanalise/artigos/ets.html",
        urlaccessdate = "19 abr. 2024"
}