Análise estatística da variabilidade da precipitação para o Município de João Pessoa-PB / Statistical analysis of the variability of precipitation for the Municipality of João Pessoa-PB

Rodrigues, Edgleidson Lima; Lopes, Renato Francisco Cândido; Sousa, Francisco de Assis Salviano de

doi:10.34117/bjdv7n7-481

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“…Pr ously, Lyra et al [5] related the wet and dry periods in Alagoas via Harmonic and Spec Analysis (HSA) and identified patterns similar to those found in this study, but wi The capital João Pessoa (Figure 2d) has high rainfall variability compared to other ENEB capitals, until the mid-1970s, when the rainiest years were recorded (negative phase of the 1949-1976 PDO). From the second half of the year onwards from the 1970s to the 1990s, drier years were recorded (positive phase of the PDO) [47]. Regarding the 28 years with lower (higher) rainfall than the average of 1.906 mm, the 1982-1983 biannual cycle (1964, 1985, and 2009) resulting from the Very Strong El Niño (La Niña Weak) stands out, with the lowest (highest) annual rainfall record.…”

Section: Annualmentioning

confidence: 96%

Rainfall in the Urban Area and Its Impact on Climatology and Population Growth

et al. 2022

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Due to the scarcity of studies linking the variability of rainfall and population growth in the capital cities of Northeastern Brazil (NEB), the purpose of this study is to evaluate the variability and multiscale interaction (annual and seasonal), and in addition, to detect their trends and the impact of urban growth. For this, monthly rainfall data between 1960 and 2020 were used. In addition, the detection of rainfall trends on annual and seasonal scales was performed using the Mann–Kendall (MK) test and compared with the phases of El Niño-Southern Oscillation (ENSO) and Pacific Decadal Oscillation (PDO). The relationship between population growth data and rainfall data for different decades was established. Results indicate that the variability of multiscale urban rainfall is directly associated with the ENSO and PDO phases, followed by the performance of rain-producing meteorological systems in the NEB. In addition, the anthropic influence is shown in the relational pattern between population growth and the variability of decennial rainfall in the capitals of the NEB. However, no capital showed a significant trend of increasing annual rainfall (as in the case of Aracaju, Maceió, and Salvador). The observed population increase in the last decades in the capitals of the NEB and the notable decreasing trend of rainfall could compromise the region’s water security. Moreover, if there is no strategic planning about water bodies, these changes in the rainfall pattern could be compromising.

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Section: Annualmentioning

confidence: 96%