Controle de qualidade on-line de dados hidrológicos teletransmitidos

Abstract

Brazil, the country with 12% of the available fresh water in the planet, has considered the water resource management a very important tool . This management includes the collection of hydrological data of watersheds and nowadays an integrated water resources management. For an efficient water resouses management, efficient data acquisition systems are required to store, control, consolidate, and distribute hydrometeorological data. Hydrometeorological data are obtained through conventional and telemetric stations that have been installed in the whole country. Convencional data has been consisted by the National Hydrometeorological Network operators and managers before it goes to the data bank. Telemetric data have been consisted manually. Telemetric data has been transmitted on-line, thus automatic quality control system are required in order to guarantee that the data used for monitoring and for real time forecast system are consistent. If inconsistent data are used without any kind of Teste, a decision based on this forecast and monitoring can be mistaken. A Quality Control System for Telemetric Hydrological Data was proposed to validate and consolidate data from telemetric stations of National Water Resouses Agency – ANA. The hydrological stations use a satellite system to transmit the information. The satellites that have been used are the Data Collections System – SCD from National Institute of Space Research – INPE. This system was tested in Tocantins basin stations. The stations are installed in places where hydrologic response are fast and slow, and this was very important to test the proposed system, showing an efficient tool for water level quality control. Quality control for rain data needs more calibration though. Thus it will be necessary more studies in order to improve the System.