Regionalization of Peninsular Spain based on the length of dry spells

Martín‐Vide, Javier; Gómez, L.

doi:10.1002/(sici)1097-0088(199904)19:5<537::aid-joc371>3.0.co;2-x

Cited by 105 publications

(76 citation statements)

References 15 publications

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“…On the other hand, PCA results are very similar, with the first EOFs corresponding to the regions established by CA, mainly in winter and spring. These broad regionalizations are supported by other studies (Rodó et al, 1997;Esteban-Parra et al, 1998;Rodríguez-Puebla et al, 1998;Martín-Vide and Gómez, 1999;Serrano et al, 1999;Goodess and Jones, 2002). They are based on the analysis of 32 stations.…”

Section: Discussionsupporting

confidence: 75%

Spatio-temporal patterns of seasonal rainfall in Spain (1912-2000) using cluster and principal component analysis: comparison

2004

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Abstract. In this work, cluster and principal component analysis are used to divide Spain in a limited number of climatically homogeneous zones, based on seasonal rainfall for 32 Spanish localities for the period 1912-2000. Using the hierarchical technique of clustering Ward's method, three clusters have been obtained in winter and spring, and four clusters have been obtained in summer and autumn. Results are similar to those obtained by applying principal component analysis. Centroid series of each cluster and principal component series of each EOF have been compared to analyze the temporal patterns. The comparison of both methods indicates that cluster analysis is suitable to establish spatiotemporal patterns of seasonal rainfall distribution in Spain.

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Section: Discussionsupporting

confidence: 75%

Spatio-temporal patterns of seasonal rainfall in Spain (1912-2000) using cluster and principal component analysis: comparison

2004

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“…the westerly circulation types) and Mediterranean (i.e. the easterly circulation types) influences, are supported by an extensive literature (Linés Escardó, 1970;Corte-Real et al, 1995Rodó et al, 1997;Zhang et al, 1997;Goodess and Palutikof, 1998;Esteban-Parra et al, 1998;Rodriguez-Puebla et al, 1998;Romero et al, 1998Romero et al, , 1999aMartin-Vide and Gomez, 1999;Serrano et al, 1999;Estrela et al, 2000;Goodess, 2000;Spellman, 2000;Trigo and DaCamara, 2000;Sumner et al, 2001).…”

Section: Circulation Typesmentioning

confidence: 73%

“…-Spain (Esteban-Parra et al, 1998;Martin-Vide and Gomez, 1999) -Iberian Peninsula (Rodriguez Puebla et al, 1999;Serrano et al, 1999).…”

Section: Aims Of the Studymentioning

confidence: 99%

Links between circulation and changes in the characteristics of Iberian rainfall

Goodess

Jones

2002

Intl Journal of Climatology

295

239

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Investigation of the links between atmospheric circulation patterns and rainfall is important for the understanding of climatic variability and for the development of empirical circulation-based downscaling methods. Here, spatial and temporal variations in circulation-rainfall relationships over the Iberian Peninsula during the period 1958-97 are explored using an automated circulation classification scheme and daily rainfall totals for 18 stations. Links between the circulation classification scheme and the North Atlantic oscillation (NAO) are also considered, as are the direct links between rainfall and the NAO. Trends in rainfall and circulation-type frequency are explored. A general tendency towards decreasing mean seasonal rainfall over the peninsula, with the exception of the southeastern Mediterranean coast, hides larger changes in wet day amount and rainfall probability. There is a tendency towards more, less-intensive rain days across much of Iberia, with a tendency towards more, more-intensive rain days along the southeastern Mediterranean coast, both of which are reflected in changes in rainfall amount quantiles. A preliminary analysis indicates that these changes may have occurred systematically across all circulation types. Comparison of the trends in rainfall and in circulationtype frequency suggests possible links. These links are supported by linear regression analyses using circulation-type frequencies as predictor variables and rainfall totals for winter months as the predictands. The selected predictor variables reflect the main circulation features influencing winter rainfall across the peninsula, i.e. the strong influence of Atlantic westerly and southwesterly airmasses over much of the peninsula, of northerly and northwesterly surface flow over northern/northwestern Spain and northern Portugal and the stronger effect of Mediterranean rather than Atlantic influences in southeastern Spain. The observed rainfall changes cannot, however, be explained by changes in circulation alone.

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“…Several statistical methods have been used to determine the drought risk based on dry spells in the daily precipitation series. These include the Markov chain series (Pérez Manrique et al, 1984;Martín-Vide et al, 1992;Lana and Burgueño, 1998a;Martín-Vide and Gómez, 1999) and different probability distributions, e.g. the exponential (Davy, 1978;Creus et al, 1978), the Eggenberger-Polya (Berger and Goosenes, 1983), and the truncated negative binomial (De Arruda and Pinto, 1980;Nobilis, 1986;Douguedroit, 1987Douguedroit, , 1990.…”

Section: Introductionmentioning

confidence: 99%

Estimating extreme dry‐spell risk in the middle Ebro valley (northeastern Spain): a comparative analysis of partial duration series with a general Pareto distribution and annual maxima series with a Gumbel distribution

Vicente‐Serrano

Beguería

2003

Intl Journal of Climatology

102

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This paper analyses a 50 year time series of daily precipitation in a region of the middle Ebro valley (northeastern Spain) in order to predict extreme dry-spell risk. A comparison of observed and estimated maximum dry spells (50 year return period) showed that the generalized Pareto (GP) distribution combined with partial duration series (PDS) gives better results than the Gumbel distribution fitted to annual maximum series. Indeed, the classical Gumbel approach underestimated the empirical duration of dry spells. The PDS-GP approach was successfully applied in the study of extreme hydro-climatic variable values. The results reported here could be applied in estimating climatic drought risks in other geographical areas.

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Regionalization of Peninsular Spain based on the length of dry spells

Cited by 105 publications

References 15 publications

Spatio-temporal patterns of seasonal rainfall in Spain (1912-2000) using cluster and principal component analysis: comparison

Spatio-temporal patterns of seasonal rainfall in Spain (1912-2000) using cluster and principal component analysis: comparison

Links between circulation and changes in the characteristics of Iberian rainfall

Estimating extreme dry‐spell risk in the middle Ebro valley (northeastern Spain): a comparative analysis of partial duration series with a general Pareto distribution and annual maxima series with a Gumbel distribution

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