MONITORING AND INTENSITY OF DROUGHTS AND RAINS IN THE CITY OF CAMPINA GRANDE / PB

Authors

  • Maria José HERCULANO MACEDO Universidade Federal de Campina Grande
  • Roni Valter DE SOUZA GUEDES Universidade Federal de Campina Grande
  • Francisco de Assis SALVIANO SOUSA Universidade Federal de Campina Grande

DOI:

https://doi.org/10.5380/abclima.v8i0.25797

Keywords:

Rainfall, SPI, El Niño, La Niña

Abstract

The city of Campina Grande in Paraíba state is in a transition zone between the climates of the Coast and Hinterland and therefore has a high rainfall irregularity. In this sense, the objective of this study was an analysis of the temporal variability of rainfall and drought on different time scales in the city of Campina Grande-PB. Using it for a series of monthly precipitation totals between 1962 and 2009 observed at the station of Embrapa in the city study, for calculating the index in SPI time scales of 01, 03, 06, 12 and 24 months. The results revealed that the analysis did not detect SPIs, according to the average intensity, categories of drought and extreme rainfall in the city of Campina Grande. The most frequent category among the SPIs was for normal rainfall. The volume of annual rainfall in the city of Campina Grande always occur around the expected value. This mathematical expectation occurs most often on the negative side of the scale around the mean value. This is why the characteristic of semiarid City. The years had higher and lower rates of rainfall were detected by the SPI-12 months and keep a good relationship with the events El Niño and La Niña, respectively, showing a good representation in relation to the actual conditions of local rainfall. Drought periods from 1968 to 1971, from 1988 to 1989 and from 1997 to 2000 were identified by all SPIs studied. Equally, the periods from 1963 to 1969 and from 2004 to 2005 were detected as rainy by all SPIs.

Author Biographies

Maria José HERCULANO MACEDO, Universidade Federal de Campina Grande

Universidade Federal de Campina Grande / Paraíba

Roni Valter DE SOUZA GUEDES, Universidade Federal de Campina Grande

Universidade Federal de Campina Grande / Paraíba

Francisco de Assis SALVIANO SOUSA, Universidade Federal de Campina Grande

Universidade Federal de Campina Grande / Paraíba

How to Cite

HERCULANO MACEDO, M. J., DE SOUZA GUEDES, R. V., & SALVIANO SOUSA, F. de A. (2011). MONITORING AND INTENSITY OF DROUGHTS AND RAINS IN THE CITY OF CAMPINA GRANDE / PB. Revista Brasileira De Climatologia, 8. https://doi.org/10.5380/abclima.v8i0.25797

Issue

Section

Artigos