Precipitation behavior (1918/2000) in west central Buenos Aires province (Argentina)

  • S. Pérez Universidad de Buenos Aires (UBA), Facultad de Agronomía, Cátedra de Climatología Agrícola.
  • E. Sierra Universidad de Buenos Aires (UBA), Facultad de Agronomía, Cátedra de Climatología Agrícola.
  • G. Casagrande Universidad Nacional de La Pampa, Facultad de Agronomía. Cátedra de Climatología y Fenología Agrícola.
  • G. Vergara Universidad Nacional de La Pampa, Facultad de Agronomía. Cátedra de Climatología y Fenología Agrícola.
  • F. Bernal Universidad de Buenos Aires (UBA), Egresado Facultad de Agronomía

Keywords:

Cycle, precipitation, Western Center of Buenos Aires,

Abstract

During the last decades, the western center of the province of Buenos Aires registered a significant increase of the grain cultivation area due to the increase of the demand of cereals and oil crops and to the technological innovations. There are indications which show that that process was favored by the increase in the precipitations which started in the beginings of the 60. From this, a study of the changes of the precipitations in the area was carried out, with the purpose to evaluate its influence in the process. In the evaluated period (1918/2000), it could be verified that, according to the indicated works oi investigation made previously, the region presented a cycle of long duration with damp and dry phases, separated by phases of transition, that extended approximately during the following periods: 1} End of a phase of transition wet/dry between the beginning of the period evaluated and the mid 20s; 2) Dry phase between the mid 20s and the late 40s; 3) Phase of transition dry/wet between the early 50s and the 70s; 4) wet phase between the mid 70s and the late 90s. To be a strip of transition between the damp climate of the Eastern region and the semi-arid climate that extends towards the west of Argentina, the area presents a high vulnerability to the fluctuations of the rain regime, therefore it is necessary to anticipate the consequences that would bring entailed the return to periods of low precipitations. It must be considered the importance of developing technological resources that allow to surpass a possible diminution of rains during the next decades.

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References

Castaneda ME. & V. Barros. 1994. Las tendencias de la precipitación en el Cono Sur de America al este de los Andes. Meteorológica, 19(1y2):23-32.

Downing TE. 1996. Ciimate change and world food security. NATO ASI Series I: Global Environmental Change 37, Springer, Berlin, 662 pp.

Parry, M.I.I 990. Climate Change and world agriculture. Earthscan. Lxindon. 157 pp.

Pizarro, J.B. & A.R. Cascardo. 1991. El desarrollo agropecuaria pampeano. 799 Pag. Cap IV La evolución de la agricultura pampeana. Grupo editor latinoamericano. Osvaldo Barsky editor.

Perez, S,, E.M. Sierra, G. Casagrande & G. Vergara. 1999. Cambios en el régimen de precipitaciones del oeste de la Region Pampeana Argentina 1921-98, XI Congreso Brasilero de Agrometeorología y II Encuentro Latinoamericano de Agrometeorologia. Floriandpolis. Brasil. Anales 499.

Roberto, Z.E., G, Casagrande & E.R Viglizzo. 1994. Lluvias en la Pampa Central: tendencia y variaciones del siglo. Cambio Climático y Agricultura Sustentable en ia Región Pampeana. Bol. INTA Centro Regional La Pampa-San Luis, N° 2, 25pp.

Sierra, E.M., R.H. Hurtado& L, Spascha. 1994. Corrimiento de las isoyetas anuales medias decenales en la Región Pampeana 1941-1990. Rev. Fac. Agr, 14(2):139-144,

Sierra, E.M, M, Conde Prat & S, Pérez. 1995. La migración de cultivos de granos como indicador del cambio climático 1941-93 en la Región Pampeana Argentina. Rev. Fac. Agr. 15(2-3):171-176.

Snedecor, G.W. S. W.G. Cochran, 1980. Statistical methods. The Iowa State University Press, 507 pp.

Trewartha G.T 1968, An introduction to weather and climate. New York, Mc.Graw-Hilt.

Watson R,, M, Zinyowera & R. Moss. 1996. Climate Change 1995- Impacts, Adaptation and Mitigation of Climate Change. Contribution of WG II to the Second Assessment Report of the IPCC, Cambridge University Press, Cambridge.

Published

2020-04-09

How to Cite

Pérez, S., Sierra, E., Casagrande, G., Vergara, G., & Bernal, F. (2020). Precipitation behavior (1918/2000) in west central Buenos Aires province (Argentina). Semiárida, 14(1/2), 39–46. Retrieved from https://cerac.unlpam.edu.ar/ojs/index.php/semiarida/article/view/4643

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Artículos Científicos y Técnicos