Rainfall was analyzed in daily resolution through the concentration index (CI) of Martin-Vide (2004). The 70 pluviometric series were obtained from the National Water Agency (ANA) through the HIDROWEB site. The calculation of this index was performed using the R environment, with the precintcon subroutine. The study period was from 1976 to 2015.The results showed values between 0.51 and 0.71, latitudinally increasing from
north to south in the study area. The rainfall percentage also showed a gradient with increase from north to south in the state.

Keywords: Concentration ratio, daily precipitation, exponential curve.


Keywords: Concentration ratio, daily precipitation, exponential curve.

Author Biographies

Beatriz Siqueira, Universidade de Campinas, Campinas (SP), Brasil

Doutora em Geografia, na área de Análise Ambiental e Dinâmica Territorial, pela Universidade Estadual de Campinas - UNICAMP. Trabalha na área de Climatologia, com interesse em bacias hidrográficas, estimativas da variabilidade da precipitação, análises geoestatísticas, concentração da precipitação, índices estatísticos aplicados à Climatologia/Meteorologia, El Niño-Oscilação Sul, mudanças climáticas e desastres/degradação ambiental. Também atua com práticas de ensino em Geografia Física e Climatologia no Ensino Básico. Atualmente é professora credenciada no Programa de Ensino Integral da Secretaria da Educação do Estado de São Paulo.

Jonas Teixeira Nery, Paulista State University

 Doutor em Meteorologia pela Universidade de Buenos Aires (1993).Foi professor adjunto - UNESP - Unidade Diferenciada Ourinhos, professor RDIDP (UNESP) Câmpus Experimental de Ourinhos. É professor colaborador do mestrado e doutorado da Universidade Estadual de Campinas. Tem experiência na área de Geociências, com ênfase em Meteorologia Aplicada, atuando principalmente nos seguintes temas: precipitação, variabilidade, anomalias, enos e bacia. É pesquisador do CNPq (nível 2). 


AGUADO, E.; CAYAN, D.; RIDDLE, L.; ROOS, M. Climatic fluctuations and the timing of West-Coast streamflow. J. Climate 5, 1468-1483, 1992.

AMANATIDIS, G. T.; PALIASTOS, A. G.; REPAPIS, C. C.; BARTTZIS, J. G. Decreasing precipitation trend in the Marathon area. Greece. Int. J. Climatol. 13, 191–201, 1993.

CERRARA-HERNAD, J. J.; GASKIN, S. J. Spatial temporal analysis of daily precipitation and temperature in the Basin of Mexico. Journal of Hydrology, 336, 231 – 249, 2007
DE LUIS, M.; RAVENTOS J.; GONZALEZ-HIDALGO, J. C.; SANCHEZ, J. R.; CORTINA, J. Spatial analysis of rainfall trends in the region of Valencia (East of Spain). Int. J. Climatol. 20, 1451–1469, 2000.

DEL RIO, S.; HERRERO, L; FRAILE, R; PENAS, A. P. Spatial distribution of recent rainfall trends in Spain (1961–2006). Int. J. Climatol. 31, 656–667, 2011.

ESTEBAN-PARRA, M. J.; RODRIGO, F. S.; CASTRO-DIEZ, Y. Spatial and temporal patterns of precipitation in Spain for the period 1880-1992. Int. J. Climatol. 18, 1557-1574, 1998.

FEIDAS, H.; NOULOPOULOU, C.; MAKROGIANNIS, T.; BORA-SENTA, E. Trend analysis of precipitation time series in Greece and their relationship with circulation using surface and satellite data: 1955–2001. Theor. Appl. Climatol. 87, 155-177, 2007.

GONG, D. Y.; H0, C. H. Shift in the summer rainfall over the Yangtze River valley in the late 1970s. Geophys. Res. Lett. 29, 1436, 2002.

KARL, T. R.; KNIGHT, R. W. EASTERLING, D. R.; QUAYLE, R. G. Indices of climate change. Am. Meteorol. Soc. 77, 279-292, 1996.

KLIK, A.; TRUMAN, C. C. What is a typical rainstorm? In: Gabriels, D., Cornelis, W. (Eds.), Proceedings of the International Symposium, 25 Years of Assessment of Erosion, 22-26 September 2003, Ghent, Belgium, pp. 93-98, 2003.

KUTIEL, H.; MAHERAS P.; GUIKA, S. Circulation and extreme rainfall conditions in the eastern Mediterranean during the last century. Int. J. Climatol. 16, 73- 92, 1996.

LOPEZ-MORENO, J. I.; VICENTE, S.; GIMENO, L.; NIETO, R. Stability of the seasonal distribution of precipitation in the Mediterranean region: observations since 1950 and projections for the 21st century. Geophys. Res. Lett. 36, L10703, 2009.

LI, X.; JIANG F.; LI, L.; WANG, G. Spatial and temporal variability of precipitation concentration index, concentration degree and concentration period in Xinjiang, China. Int. J. Climatol. Published online, 2010. doi: 10.1002/joc.2181.

MARTIN-VIDE, J. Spatial distribution of a daily precipitation concentration index in Peninsular Spain. Int. J. Climatol. 24, 959-971, 2004.

MORAL, F. J. Comparison of different geostatistical approaches to map climate variables: application to precipitation. Internacional Journal of Climatology, 2009.

PAREDES, D.; TRIGO, R. M.; GARCIA-HERRERA, R.; FRANCO-TRIGO, I. Understanding precipitation changes in Iberia in early spring: weather typing and stormtracking approaches. J. Hydromet. 7, 101–113, 2006.

REN, G. Y.; WU, H.; CHEN, Z. H. Spatial patterns of change trend in rainfall of China. Quart. J. Appl. Meteorol. 11, 322-330, 2000.
SCHOLZ, G.; QUINTON, J. N.; STRAUSS, P. Soil erosion from sugar beet in Central Europe in response to climate change induced seasonal precipitation variations. Catena 72, 91–105, 2008.

ZHANG, Q.; XU, C. Y.; MARCO, G.; CHEN, Y. P.; LIU, C. L. Changing properties of precipitation concentration in the Pearl River basin. China. Stoch. Environ. Res. Risk. A. 23, 377-385, 2009.

ZHAI P. M.; ZHANG, X. B.; WAN, H.; PAN, X. H. Trends in total precipitation and frequency of daily precipitation extremes over China. J. Clim. 18, 1096-1108, 2005.
How to Cite
SIQUEIRA, Beatriz; NERY, Jonas Teixeira. ANALYSIS OF DAILY PRECIPITATION IN THE STATE OF PARANÁ. Mercator, Fortaleza, v. 18, nov. 2019. ISSN 1984-2201. Available at: <>. Date accessed: 06 apr. 2020. doi: