Annual and Seasonal Century Scale Trends of the Precipitation in the Mediterranean Area During the Twentieth Century

Douguédroit, Annick; Norrant, Caroline

doi:10.1007/978-3-642-55657-9_9

Cited by 13 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several studies have contributed to the analysis of precipitation variability over the Mediterranean basin. The results from these studies indicate a precipitation decrease, not always significant, or the lack of a linear trend (De Luis et al , 1998; Lana and Burgueño, 2000; Klein‐Tank et al , 2002; Douguédroit and Norrant, 2003; Norrant and Douguédroit, 2003; Brunetti et al , 2006a; González‐Hidalgo et al , 2011). Most of the Mediterranean region has experienced decreasing winter precipitation during recent decades (Piervitali et al , 1997; Palutikof et al , 1999).…”

Section: Introductionmentioning

confidence: 99%

Precipitation variability and change in the Calabria region (Italy) from a high resolution daily dataset

Brunetti

Caloiero

Coscarelli

et al. 2010

Intl Journal of Climatology

134

View full text Add to dashboard Cite

The present study aims at improving data availability and quality for the last 80-90 years for daily precipitation in the Calabria region (southern Italy). First, the original database was homogenised and the gaps filled in for 129 daily rain gauges for the 1916-2006 period. Then, precipitation variability and change were evaluated at an adequate spatial resolution. Monthly and annual total precipitation (P), number of wet days (WDs), and precipitation intensity (PI) were calculated for each series. With regard to the monthly total precipitation a general negative trend, albeit not everywhere significant, was detected, in particular for the autumn-winter period, while in summer the tendency was toward an increase in total precipitation. The monthly behaviour of WDs was not very different from that observed for P: a diffuse negative trend was detected in most months, particularly evident and significant in January, with the exception of April and the summer months, for which the tendency was toward an increase. Regarding the PI, a general negative and often significant trend was found for the entire region and for almost all the months, except summer. Attention was also focused on tendencies in the different PI categories, revealing negative trends in high-intensity categories, especially coming from the winter season.Finally, running trend analysis revealed that the previously discussed tendencies were not persistent throughout the series length, but depended on the period examined. This important aspect should be taken into account when different results based on different time windows are compared.

show abstract

Section: Introductionmentioning

confidence: 99%

Precipitation variability and change in the Calabria region (Italy) from a high resolution daily dataset

Brunetti

Caloiero

Coscarelli

et al. 2010

Intl Journal of Climatology

134

View full text Add to dashboard Cite

show abstract

“…Several authors have analysed the behaviour of precipitation in Mediterranean areas at regional, national and international levels over the last decade (Maheras, 1998; Dechemi et al , 2000; Trigo and DaCamara, 2000; Moisselin et al , 2002; Valero et al , 2004; Douguédroit and Norrant, 2003; Norrant and Douguédroit, 2003a, 2003b; Piervitali and Colacino, 2003; Türkes, 2003; Türkes and Erlat 2006; Cannarozzo et al , 2006; Xoplaki et al , 2006; Toreti et al , 2009). The prevailing evolution in this area is a non‐significant decrease of precipitation, although exceptions may be seen depending on the area and the study period.…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution of recent rainfall trends in Spain (1961–2006)

Río

Herrero

Fraile

et al. 2011

Intl Journal of Climatology

151

View full text Add to dashboard Cite

Annual, seasonal and monthly rainfall trends from 1961 to 2006 period were analysed in this study by applying various statistical tools to data from 553 Spanish weather stations. The magnitude of the trends was derived from the slopes of the regression lines using the least squares method, while the statistical significance was determined using the non-parametric Mann-Kendall test. Geostatistical interpolation techniques were applied to generate rainfall trend surfaces. Combining classic trends tests and spatially interpolated precipitation permits the spatio-temporal visualization of detected trends. Updated trends reveal that rainfall is generally decreasing in January, February, March, April, and June. Around 61, 44 and 12% of the whole territory is evidencing significant negative trends in February, June and March, respectively. Significant precipitation decreases are also noted in more than 28% of Spain in summer and winter. On the contrary, rainfall is significantly increasing in October in more than 21% of Spain and areas mainly located in north-western areas. May, August, September and autumn also show significant positive trends in the period 1961-2006, although the percentages are lower than for negative trends. Finally, the annual precipitation is significantly decreasing in 11% of the territory.

show abstract

“…Varimax orthogonal rotation is the option used to avoid some of the domain shape dependences [29] and to obtain a stable and physically meaningful pattern. The principle is to determine the components that correlate best with the variables [16,30]. The time series associated with the first component (Figure 9(a)) reflect an evolution mode identical to the one described by the PCA component without rotation, with some differences like excesses, less accentuated from 1918 to 1953 in contrast with the other three PCs.…”

Section: B Spatiotemporal Rainfall Variabilitymentioning

confidence: 99%

“…In addition, raised percentages of rainfall series show breaks during the 1960-1970 period. Nonetheless, the analysis on parts of the Mediterranean area shows that the surging progression is a non-considerable reduction in precipitation or a lack of linear trend during the last century or a shorter period [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

A Spatiotemporal Approach in Detecting and Analyzing Hydro-climatic Change in Northwest Algeria

Bouraoui

Medjerab

2022

Eng. Technol. Appl. Sci. Res.

View full text Add to dashboard Cite

Understanding climatic behavior, particularly that of semi-arid regions, is essential in order to optimize water resources management and provide protection from climatic risks. Water resources have great socio-economic and environmental importance. This paper focuses on the statistical analysis of the rainfall regime of northwest Algeria and estimates its spatial distribution and temporal variation. To this end, time series and principal component analysis were performed on rainfall series recorded from 1913 to 2009, representing the annual precipitation from thirty meteorological stations to discover patterns and trends in the studied region. Furthermore, the applied spectral analysis of the time series reveals the existence of a period of approximately 97 years at all stations. ArcGIS along with statistical and analytical tools like SPSS and XLSTAT were utilized in this study of the climatic behavior in northwest Algeria.

show abstract

Annual and Seasonal Century Scale Trends of the Precipitation in the Mediterranean Area During the Twentieth Century

Cited by 13 publications

References 1 publication

Precipitation variability and change in the Calabria region (Italy) from a high resolution daily dataset

Precipitation variability and change in the Calabria region (Italy) from a high resolution daily dataset

Spatial distribution of recent rainfall trends in Spain (1961–2006)

A Spatiotemporal Approach in Detecting and Analyzing Hydro-climatic Change in Northwest Algeria

Contact Info

Product

Resources

About