International Rainwater Catchment Systems Conference
Catchment: An Answer to the Water Scarcity of the Next Millennium."
Petrolina, Brazil - July 1999
Section 3: Rainwater Catchment and Droughts
Serial Water Balance of Petrolina, Pernambuco-Brazil
Antônio Heriberto de Castro Teixeira &
Bernardo Barbosa da Silva
Embrapa Semi-Árido, CP 23
CEP 56300-000 Petrolina-PE, Brazil
In order to use the natural resources of a region, it is
necessary to know the thermal and water conditions and their interaction. One
way to find out about it is by realizing the climatic water balance. This
balance is based on the calculation of pluvial precipitation and potential
evapo-transpiration. The objective of this paper was to realize the serial
water balance in the region of Petrolina-PE. Daily data of precipitation and
air temperature from Embrapa Semi-arido's agro-meteorological station was used.
The periods of water shortage and excess were defined and trends for the coming
years were taken into consideration.
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