9th
International Rainwater Catchment Systems Conference
"Rainwater
Catchment: An Answer to the Water Scarcity of the Next Millennium."
Petrolina, Brazil - July 1999
Section 3: Rainwater Catchment and Droughts
Paper 3.1
El Niño's Impact on Rainwater Catchment in Brazil's
Semiarid Northeast
Vicente de Paulo Rodrigues da Silva, Hiran
de Melo, Antônio Heriberto de Castro Teixeira & José Homero Feitosa
Cavalcanti
DCA/CCT/UFPB
E-mail: vicente@dca.ufpb.br
Abstract
This study uses the annual precipitation data provided by 88
weather stations in Brazil's Northeast. The yearly rainfall variations of each
station were compared to the average climatic data of a 82-year period. For the
period 1911 to 1992 the relationship between variations of yearly rainfall and
the El Niño phenomenon was analyzed
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