Hydrological Retrospective and Historical Drought Analysis in a Brazilian Savanna Basin
نویسندگان
چکیده
Analyzing historical droughts is essential to improve the assessment of future hydrological risks and understand effects climate variability on streamflow. However, prolonged consistent time series are scarce in Brazilian savanna region. This study aimed analyze performance reanalysis products precipitation estimation, modeling, drought analysis a basin. For this purpose, data from twentieth-century atmospheric model ensemble (ERA-20CM) land component fifth generation European ReAnalysis (ERA5-Land) with bias correction were used. The weather variables obtained Climatic Research Unit (CRU) modeling was performed using Soil Water Assessment Tool (SWAT). Standardized Streamflow Index (SSI) used calculate Overall, ERA5-Land satisfactorily mainly monthly scale, prediction. Since ERA-20CM showed unsatisfactory values for statistics all analyses, hydrologic (1950 2018) ERA5-Land. results both an increase number dry months decrease wet recent decades.
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ژورنال
عنوان ژورنال: Water
سال: 2022
ISSN: ['2073-4441']
DOI: https://doi.org/10.3390/w14142178