Resumen de Análisis de la sequía meteorológica en una región tropical de sabana de Venezuela, mediante la comparación de cuatro índices de sequías.
Ana Martínez, Víctor William Rojas Luján, José Luis Sosa Sánchez, Abimel López García, Víctor M. Reyes Gómez, Carlos Deza Navarrete, Francisco Diaz, Yoni Mateo Valiente Saldaña, José Fernando Paredes, Luis Ramírez
- español
El objetivo de este estudio se basó en el análisis de la sequía meteorológica en una región tropical de sabana de Venezuela, mediante la comparación de cuatro índices de sequía diferentes. La información utilizada para el estudio se obtuvo del registro de datos meteorológicos, provenientes de series de precipitación mensual de la estación agrometeorológica “Ciudad Bolivia”, situada dentro del campo experimental del INIA en el estado Barinas; para el período 1971-2016.
- English
The objective of this study was based on the analysis of meteorological drought in a tropical savannah region of Venezuela, by comparing four different drought indices. The information used for the study was obtained from the record of meteorological data, from monthly precipitation series of the agrometeorological station C¸ iudad Bolivia”, located within the experimental field of the INIA in the state of Barinas; for the period 1971-2016. Standardized precipitation indices (ISP), statistical index Z (IEZ), Chinese Z index (IZC) and normal precipitation percentage (PPN), based on monthly precipitation data, were used, which allowed to identify and describe drought events in the locality under study. The results obtained with the IEZ, IZC and PPN indices reflected heterogeneous values in the percentages of occurrence of droughts, especially in the recognition of severe and extreme droughts; compared to the ISP. Based on the above, the ISP demonstrated greater sensitivity to precipitation changes, proving to be the best option for the detection of drought events because it is more consistent and reliable.
