Differences in Spatial Patterns of Drought on Different Time Scales: An Analysis of the Iberian Peninsula

Vicente‐Serrano, Sergio M.

doi:10.1007/s11269-006-2974-8

Cited by 356 publications

(256 citation statements)

References 74 publications

(76 reference statements)

Supporting

Mentioning

233

Contrasting

Unclassified

Order By: Relevance

“…An SPI of 0 indicates precipitation corresponding to 50% of the accumulated probability according to the Pearson III distribution. The complete formulation of the SPI calculation according to the Pearson III distribution and the L-moment method can be found in Vicente- Serrano and Cuadrat (2002) and Vicente-Serrano (2006).…”

Section: Drought Index Calculationmentioning

confidence: 99%

“…To determine the general patterns of temporal evolution in the winter-SPI series, we used a PCA, which is widely used to analyse spatial and temporal patterns of droughts in different regions (Karl and Koscielny, 1982;Eder et al, 1987;Bonaccorso et al, 2003;Vicente-Serrano et al, 2004b;Vicente-Serrano, 2006). To summarise the general temporal patterns of droughts in the study area, we used a PCA in S-mode (Serrano et al, 1999), in which observatories are the variables and years the different cases.…”

Section: Analysis Of Drought Spatial and Temporal Patternsmentioning

confidence: 99%

See 1 more Smart Citation

The influence of atmospheric circulation at different spatial scales on winter drought variability through a semi‐arid climatic gradient in Northeast Spain

Vicente‐Serrano

López‐Moreno

2006

Intl Journal of Climatology

Self Cite

127

View full text Add to dashboard Cite

This paper analyses the spatial and temporal variability of winter droughts in a semi-arid geographic gradient in Northeast Spain, from the Pyrenees in the north to the Mediterranean coastland in the south. Droughts that occurred between 1952 and 1999 were analysed by means of the Standardised Precipitation Index (SPI). The influence of the weather-type frequency and of the general North Atlantic atmospheric circulation patterns was analysed. The results indicate that winter droughts show an important spatial variability in the study area, differentiating three well-defined patterns. These correspond to the Pyrenees, the centre of the Ebro Valley, and the Mediterranean coastland. General negative trends in winter SPI have been found, which are indicative of the increase in winter drought conditions in the study area. Nevertheless, important spatial differences have also been recorded. Dominant north-south gradients in the influence of weather types are shown. Moreover, the negative trends in winter-SPI values agree with the negative trend in the frequency of the weather types prone to cause precipitation, such as the C, SW and W weather types and the increase in the frequency of A weather types. Nevertheless, in the Mediterranean coastland, the positive trend in SPI values agrees with the increase in the frequency of weather types of the east (E, SE), which are prone to cause precipitation in this area. Interannual variations in the frequency of the different weather types have been highly determined by different general atmospheric circulation patterns, mainly the North Atlantic Oscillation (NAO). Nevertheless, the correlation between the time series of weather-type frequency and the winter SPI is higher than that found between the SPI and the NAO. Thus, although the interannual NAO variability explains a high percentage of the interannual differences in the frequency of different weather types, it is not sufficient to explain the spatial and temporal variability of droughts, which respond better to atmospheric variability at more detailed (synoptic) spatial scales.

show abstract

Section: Drought Index Calculationmentioning

confidence: 99%

Section: Analysis Of Drought Spatial and Temporal Patternsmentioning

confidence: 99%

The influence of atmospheric circulation at different spatial scales on winter drought variability through a semi‐arid climatic gradient in Northeast Spain

Vicente‐Serrano

López‐Moreno

2006

Intl Journal of Climatology

Self Cite

127

View full text Add to dashboard Cite

show abstract

“…These typically last for several months, or even years, and span thousands of square kilometres. Previous authors have considered the spatial and temporal nature of drought at regional (Livada and Assimakopoulos, 2007;Vicente-Serrano, 2006), continental (Briffa et al, 1994;Lloyd-Hughes and Saunders, 2002;van der Schrier et al, 2006) and global scales (Sheffield et al, 2009). A limitation of these studies is that they reduce the full 3-dimensional space-time drought structure to a lower order subspace.…”

Section: Introductionmentioning

confidence: 99%

A spatio‐temporal structure‐based approach to drought characterisation

Lloyd‐Hughes

2011

Intl Journal of Climatology

187

105

View full text Add to dashboard Cite

Drought characterisation is an intrinsically spatio-temporal problem. A limitation of previous approaches to characterisation is that they discard much of the spatio-temporal information by reducing events to a lower-order subspace. To address this, an explicit 3-dimensional (longitude, latitude, time) structure-based method is described in which drought events are defined by a spatially and temporarily coherent set of points displaying standardised precipitation below a given threshold. Geometric methods can then be used to measure similarity between individual drought structures. Groupings of these similarities provide an alternative to traditional methods for extracting recurrent space-time signals from geophysical data. The explicit consideration of structure encourages the construction of summary statistics which relate to the event geometry. Example measures considered are the event volume, centroid, and aspect ratio. The utility of a 3-dimensional approach is demonstrated by application to the analysis of European droughts (15°W to 35°E, and 35°N to 70°N) for the period 1901-2006. Large-scale structure is found to be abundant with 75 events identified lasting for more than 3 months and spanning at least 0.5 × 10 6 km 2 . Near-complete dissimilarity is seen between the individual drought structures, and little or no regularity is found in the time evolution of even the most spatially similar drought events. The spatial distribution of the event centroids and the time evolution of the geographic cross-sectional areas strongly suggest that large area, sustained droughts result from the combination of multiple small area (∼10 6 km 2 ) short duration (∼3 months) events. The small events are not found to occur independently in space. This leads to the hypothesis that local water feedbacks play an important role in the aggregation process.

show abstract

“…McKee et al [18] suggested that the procedure of SPI can be applied to other variables relevant to drought, e.g., stream flow or groundwater. In addition to the gamma distribution, a range of other distributions (including those related to the gamma distribution) have been used to normalize [20,21], beta distributions and nonparametric approach kernel densities for soil moisture [22,23], log-normal for runoff [24], and six three-parameter distributions (lognormal, Pearson Type III, log-logistic, general extreme value, generalized Pareto, and Weibull) for streamflow [25].…”

Section: Standardized Precipitation Indexmentioning

confidence: 99%

Spatiotemporal Characteristics of Groundwater Drought and Its Response to Meteorological Drought in Jiangsu Province, China

Liu

Zhou

et al. 2016

Water

View full text Add to dashboard Cite

Abstract:In this study, the temporal and spatial variations of groundwater drought using a Standardized Groundwater Level Index (SGI) were analyzed based on 40 monthly groundwater level observation wells from 1989 to 2012 in Jiangsu Province, China. Meteorological drought, calculated by the Standardized Precipitation Index (SPI), was also included to reveal its propagation and impact on the groundwater drought process. Results showed that the southern region of Jiangsu faced more frequent groundwater droughts and lower intensity, while the northern region faced less frequent groundwater drought with higher intensity. Furthermore, the cross-correlation between the spatial average of SGI and SPI for SPI accumulation periods of q = 1 to 12 was computed. The relationship between SGI and SPI varied in different regions. Detailed analysis of the characteristics of groundwater and meteorological drought for each region showed that meteorological droughts happened more frequently than groundwater drought in Jiangsu Province during the study period, while the mean duration and mean magnitude of groundwater droughts were longer and larger than those of meteorological droughts. It is expected that this study will provide useful information for drought monitoring and mitigation in Jiangsu and similar areas.

show abstract

Differences in Spatial Patterns of Drought on Different Time Scales: An Analysis of the Iberian Peninsula

Cited by 356 publications

References 74 publications

The influence of atmospheric circulation at different spatial scales on winter drought variability through a semi‐arid climatic gradient in Northeast Spain

The influence of atmospheric circulation at different spatial scales on winter drought variability through a semi‐arid climatic gradient in Northeast Spain

A spatio‐temporal structure‐based approach to drought characterisation

Spatiotemporal Characteristics of Groundwater Drought and Its Response to Meteorological Drought in Jiangsu Province, China

Contact Info

Product

Resources

About