Annual Rainfall in Pernambuco, Brazil: Regionalities, Regimes, and Time Trends
نویسندگان
چکیده
Abstract This study aimed to identify the homogeneous zones, regimes, and local trends for annual seasonal rainfall in state of Pernambuco, Brazil. We collected data on monthly from 45 weather stations Pernambuco 1987 2019. The were organized yearly zones based Euclidean distance Ward's coefficient. mean value each zone was calculated subjected descriptive statistics analysis, analysis regime with Rain Anomaly Index, time trend using Mann-Kendall method. results show three zones: 1 (semiarid), 2 (transition), 3 (coastal), values 562, 1032, 1812 mm year-1, respectively. precipitation showed predominance dry years as 1, 2, exhibited periods 18, 17, 15 years, Time revealed a decrease 48.7 Zone 13.2 204.4 3, without statistical significance. Seasonal demonstrated that presented negative spring positive summer, indicating changes rain seasonality.
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ژورنال
عنوان ژورنال: Revista Brasileira De Meteorologia
سال: 2021
ISSN: ['0102-7786', '1982-4351']
DOI: https://doi.org/10.1590/0102-77863630129