| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000436105 |
| ISSN: | 0001-3765 |
| Authors: | Avila Diaz, Alvaro1 Justino, Flávio1 Lindemann, Douglas S2 Rodrigues, Jackson M3 Ferreira, Gabriela Regina1 |
| Institutions: | 1Universidade Federal de Vicosa, Departamento de Engenharia Agricola, Vicosa, Minas Gerais. Brasil 2Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul. Brasil 3Universidade Federal Fluminense, Instituto de Educacao de Angra dos Reis, Angra dos Reis, Rio de Janeiro. Brasil |
| Year: | 2020 |
| Volumen: | 92 |
| Number: | 2 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | Extreme climatic events and their hazards have strong impact on society. Urban areas in Brazil are especially vulnerable to the impact of such events due to their rapid growth and inappropriate infrastructure. Viçosa is a mid-sized city in Southeastern Brazil that has been experiencing issues associated with urban expansion and population growth since the 1960s. Thus, this study aims to identify patterns of extreme climate events in Viçosa based on daily temperature and precipitation time series (1968-2017). Homogeneity tests were carried out in order to identify breaking points in these climate variables. Climate trends were analyzed through Mann-Kendall test and their magnitude was checked based on Sen’s slope. Results have evidenced statistically significant and increasing trends in annual minimum temperature since the 1990s. Moreover, statistically significant breaking points in extreme temperature indices have shown increasing number of warm days, and decreasing number of cold nights, in both annual and seasonal analyses. Extreme climatic events have been observed more often in recent years, mainly in the number of consecutive dry days and maximum and heavy precipitation days. Based on results, Viçosa experiences warmer conditions throughout the year, whereas more (less) torrential rainfall events have been occurring during Summer (Winter) |
| Disciplines: | Geociencias |
| Keyword: | Ciencias de la atmósfera, Cambio climático, Temperatura ambiental, Precipitación, Análisis de tendencia, Homogeneidad |
| Keyword: | Atmospheric sciences, Climate change, Environmental temperature, Homogeneity, Precipitation, Trend analysis |
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