Open AccessChange in number of rainy days in the municipality of Visconde de Mauá, Rio de Janeiro
Author(s) -
Andre Cleber da Silva Bunhak,
Henderson Silva Wanderley
Publication year - 2020
Publication title -
journal of biotechnology and biodiversity
Language(s) - English
Resource type - Journals
ISSN - 2179-4804
DOI - 10.20873/jbb.uft.cemaf.v8n4.bunhak
Subject(s) - statistical analysis , statistical significance , geography , zoology , biology , mathematics , statistics
Climate change has the potential to change the distribution of rainfall. However, for Sul Fluminense this analysis was not performed. Thus, the objective of this research was to identify changes in the number of rainy days in the South Fluminense region. Daily rainfall data from 1938-2011 were used for the study from a weather station located in the municipality of Visconde de Mauá-RJ. The rain data were divided into five classes of days with rain equal to: P = 0; 0 P ≤ 10; 10 > P ≤ 15; 15 > P ≤ 20. The analysis was performed using the rain data for the months of January (summer) and July (winter). The rain classes were submitted to Student's t test for the linear regression slope to identify possible changes in rainfall classes. For this test, a significance level of 5% was adopted. The analysis showed that the classes 5 > P ≤ 10; 10 > P ≤ 15; 15 > P ≤ 20 for the month of January, showed a reduction, but there was no statistical significance for the test applied. For January only classes 0 P ≤ 10 and 10 > P ≤ 15 and reduction in 0 P ≤ 20. However, without statistical significance for July. Results show greater reduction the rainfall in January.