Regionalisation of Precipitation in Castilla and Leon (Spain). Analysis of its Temporal behaviour

Labajo, J. L.; Piorno, Antonio

doi:10.1007/978-3-662-04313-4_15

Cited by 7 publications

(4 citation statements)

References 13 publications

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“…Over the analysed period , decreases in annual precipitation and precipitation erosivity accompanied by increases in precipitation concentration predominated in southern Portugal, although no generalised, significant trends for these variables have been detected. The results obtained agree with those obtained by Labajo & Piorno (2001), when the study of spatio-temporal variability in precipitation in Castilla and León during the period 1945-1996 was performed, in which they identified a declining trend in annual precipitation, although not statistically significant. De Luis et al (2009,2010) also found decreases in yearly precipitation, in the majority of Mediterranean Iberian Peninsula, when analysing the annual trends during the period 1951-2000.…”

Section: Discussionsupporting

confidence: 90%

Precipitation and Erosivity in Southern Portugal: Seasonal Variability and Trends (1950–2008)

et al. 2014

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Southern Portugal experiences the lowest amounts of annual precipitation and the highest level of susceptibility to soil erosion, drought events and desertification phenomena in mainland Portugal. The first goal of this paper was to analyse spatial variability and trends in annual precipitation and erosivity in southern mainland Portugal for the period 1950/1951-2007/2008. The second objective was to evaluate seasonality in relation to precipitation distribution, erosivity and concentration over the same period and to evaluate and detect possible changes in the time trend for precipitation erosivity. In order to achieve these objectives, the annual and seasonal precipitation figures, corresponding to data from 90 rain gauges, were analysed and the Modified Fournier Index and Precipitation Concentration Index calculated for each station. The results obtained revealed distinct behaviour patterns for yearly precipitation, erosivity and concentration trends. Decreases in annual precipitation and erosivity figures accompanied by increases in precipitation concentration were found. Nevertheless, no generalised significant trends have been detected for these variables. In seasonal terms, there was a general trend towards an increase in amount, concentration and precipitation erosivity in autumn and summer, and a significantly reducing in winter. The increase in precipitation erosivity, particularly in the autumn, the most water-erosive season, suggests a rising in potential soil erosion risk in southern Portugal.

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Section: Discussionsupporting

confidence: 90%

Precipitation and Erosivity in Southern Portugal: Seasonal Variability and Trends (1950–2008)

et al. 2014

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“…Results of multiple regressions show good correlation between runoff and precipitation in just three cases, but still a certain percentage of the variance remains unexplained. Additionally, trends for annual precipitation are not as clear as those for runoff and do not show any noticeable pattern, which coincides with results obtained in various studies, for the same region (Labajo and Piorno, 2001) and for the whole territory of Spain (Serrano et al, 1999;Castro et al, 2005). Annual temperatures, on the other hand, have undergone significant increase since the early 70s, as most analyses show for differing regions of Spain (Castro et al, 2005;Morales et al, 2005;Brunet et al, 2007).…”

Section: Hydro-climatic Interactionssupporting

confidence: 88%

Hydrological response of Mediterranean headwaters to climate oscillations and land-cover changes: The mountains of Duero River basin (Central Spain)

Morán-Tejéda

Barbancho

Llorente-Pinto

2010

Global and Planetary Change

102

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“…For example, Bartzokas et al (2003) analysed the spatial distribution of precipitation amount and duration in Greece for each main rainfall period and showed the differences between northern, western and eastern areas. In their study of spatio-temporal variability in precipitation in Castile and León during the period 1945-1996, Labajo and Piorno (2001) identified a declining trend in annual precipitation, although this was not statistically significant. De Luis et al (2009 also found decreases in yearly precipitation in most of the Mediterranean Iberian Peninsula when analysing the annual trends for the period 1951-2000.…”

Section: Introductionmentioning

confidence: 94%

Precipitation variability in Portugal from 1960 to 2011

Nunes

Lourenço

2015

J. Geogr. Sci.

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This study analyses spatial variability and trends in annual and monthly precipitation (amount and concentration) based on data from 42 stations in mainland Portugal during the period 1960-2011. Relationships between certain geographic variables (elevation, latitude and longitude) and precipitation variability were also determined in order to check for specific dependencies and spatial patterns in precipitation distribution, concentration and changing trends. Trends and relationships have been analysed using both parametric and non-parametric tests. The results showed that annual precipitation had decreased in all stations and that this trend is statistically significant for most of the time series (70% of the stations showed negative trends with at least a 0.1 significance level). The Annual Precipitation Concentration Index revealed an opposite behaviour pattern, suggesting that even though the annual trend for precipitation amount was negative overall, more than half of the udometric stations registered a more marked seasonality for precipitation during the period 1960-2011. However, only one station showed statistical significant time trend. Regarding the influence of geographical features, latitude is the most important variable, governing spatial distribution and variations in annual precipitation as well as its intra-annual changeability. These important changes in precipitation, involving both amount and concentration, may have severe consequences for ecosystems and societies.

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Regionalisation of Precipitation in Castilla and Leon (Spain). Analysis of its Temporal behaviour

Cited by 7 publications

References 13 publications

Precipitation and Erosivity in Southern Portugal: Seasonal Variability and Trends (1950–2008)

Precipitation and Erosivity in Southern Portugal: Seasonal Variability and Trends (1950–2008)

Hydrological response of Mediterranean headwaters to climate oscillations and land-cover changes: The mountains of Duero River basin (Central Spain)

Precipitation variability in Portugal from 1960 to 2011

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