Exportacion de un tomate en Canarias: un patron estacional estable?
AbstractRESUMEN: En este trabajo se analiza el patrÃ³n estacional de la exportaciÃ³n semanal de tomate canario desde el ingreso de EspaÃ±a en la UniÃ³n Europea. Un primer examen de los componentes determinÃsticos de la serie revela la inestabilidad de Ã©stos, claramente vinculada a los cambios en la normativa comercial de acceso a los mercados europeos, asÃ como la presencia de numerosas observaciones anÃ³malas causadas por fenÃ³menos de diversa Ãndole. Estas circunstancias afectan al estudio detallado de la estacionalidad estocÃ¡stica de la serie bajo estudio, que reÃºne dos caracterÃsticas Â—la frecuencia semanal de las observaciones y la existencia de perÃodos sin exportaciÃ³nÂ— cuya consideraciÃ³n es imprescindible para recoger apropiadamente la conducta de las exportaciones y, concretamente, la naturaleza del comportamiento estacional de las mismas. SUMMARY: This paper studies the evolution of the weekly exports of Canary Island tomatoes after the entry of Spain in the European Union. A first analysis of deterministic components reveals their instability, clearly related to changes in the EU commercial regulations of access to European markets, and the presence of many outliers due to different reasons. These factors must be considered in the study of stochastic seasonality of the series. Furthermore, it is necessary to take into account the weekly frequency data and the existence of periods without exports in order to capture its behaviour and, in particular, the nature of its seasonal component.
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Bibliographic InfoArticle provided by Spanish Association of Agricultural Economists in its journal Economia Agraria y Recursos Naturales.
Volume (Year): 02 (2002)
Issue (Month): 02 ()
tomato exports; seasonality; unit roots; structural time series models; outliers; Crop Production/Industries; Q17;
Find related papers by JEL classification:
- Q17 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Agriculture in International Trade
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