CLIMATOLOGICAL WATER BALANCE IN NORTH FLUMINESE (PERIOD FROM JANUARY/2012 TO NOVEMBER/2023): A CASE STUDY

• DOI: https://doi.org/10.22533/at.ed.973432426026

• Palavras-chave: Irrigation, evapotranspiration, water in the soil, agrometeorology, climate change

• Keywords: Irrigation, evapotranspiration, water in the soil, agrometeorology, climate change

• Abstract:

  As the climate is the factor that most influences sugarcane productivity and aware of the lack of information about the culture's production environment and the financial impact that the sugarcane sector provides in the North Fluminense Region, RJ were the motivators for the realization of this study on the normal and sequential climatological water balance during the months of January/2012 to November/2023. In summary, it was concluded that the analysis of the normal climatological water balance showed a change in the rainfall regime in Campos dos Goytacazes, RJ, with a water deficit in almost all months of the year, indicating the need for readjustment in the region's agricultural planning. The analysis of the sequential climatological water balance indicated water deficiency in almost all 429 evaluated ten-year periods (12 years) and only 47 ten-year periods with a water surplus, the majority of which, from the year 2020 onwards, were justified by the increase in high rainfall events. intensity, indicating the need for changes in decision-making in the regional agricultural sector. Finally, it can be concluded that the water deficit is high in all months of the year and that the rainfall regime is inefficient to overcome it.