ANALYSIS OF DAILY PRECIPITATION IN THE STATE OF PARANÁ
Abstract
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.
References
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.

This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish in this journal agree to the following terms:
- Authors retain the copyright and grant MERCATOR the right of first publication, with the work simultaneously licensed under the Creative Commons Attribution License, which allows the sharing of the work with recognition of the authorship of the work and initial publication in this journal.
- Authors are authorized to sign additional contracts separately, for non-exclusive distribution of the version of the work published in this journal (e.g., publish in an institutional repository or as a book chapter), with acknowledgment of authorship and initial publication in this journal.
- Authors are allowed and encouraged to publish and distribute their work online (e.g., in institutional repositories or on their personal page) at any point before or during the editorial process, as this can generate productive changes as well as increase the impact and citation of the published work (see The Effect of Free Access).
- Authors are responsible for the content of the manuscript published in the journal.