Streamflow droughts in the Iberian Peninsula between 1945 and 2005: spatial and temporal patterns

Lorenzo‐Lacruz, Jorge; Morán-Tejéda, Enrique; Vicente‐Serrano, Sergio M.; López‐Moreno, Juan I.

doi:10.5194/hess-17-119-2013

Cited by 84 publications

(67 citation statements)

References 55 publications

(70 reference statements)

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“…Moreover, over southwestern IP a clear pattern of positive trends of drought mean intensity is observed, which are coincident with the area affected in the last severe drought events of 2005 and 2012 [9,10,18] that were responsible by severe losses in crop yields and energy [8,9]. When studying the streamflow droughts in the IP, Lorenzo-Lacruz et al [75] also obtained an increase in drought duration and magnitude in similar areas. There are many factors that explain these results, mainly related to the high regulation of rivers in the IP, but the authors point to precipitation as an important factor.…”

Section: Discussionmentioning

confidence: 78%

Drought Trends in the Iberian Peninsula over the Last 112 Years

Páscoa

Gouveia

Russo

et al. 2017

Advances in Meteorology

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The Iberian Peninsula (IP) is a drought-prone area located in the Mediterranean which presents a significant tendency towards dryness during the last decades, reinforcing the need for a continuous monitoring of drought. The long-term evolution of drought in the IP is analyzed, using the Standardized Precipitation Evaporation Index (SPEI) and the Standardized Precipitation Index (SPI), for the period of 1901-2012 and for three subperiods: 1901-1937, 1938-1974, and 1975-2012. SPI and SPEI were calculated with a 12-month time scale, using data from the Climatic Research Unit (CRU) database. Trends in the drought indices, precipitation, and reference evapotranspiration (ET 0 ) were analysed and series of drought duration, drought magnitude, time between drought events, and mean intensity of the events were computed. SPI and SPEI significant trends show areas with opposite signals in the period 1901-2012, mainly associated with precipitation trends, which are significant and positive in the northwestern region and significant and negative in the southern areas. Additionally, SPEI identified dryer conditions and an increase in the area affected by droughts, which agrees with the increase in ET 0 . The same spatial differences were identified in the drought duration, magnitude, mean intensity, and time between drought events.

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Section: Discussionmentioning

confidence: 78%

Drought Trends in the Iberian Peninsula over the Last 112 Years

Páscoa

Gouveia

Russo

et al. 2017

Advances in Meteorology

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“…Significant decrease of precipitation or lack of it cause disruption of natural and agricultural ecosystems and trouble with appropriate water management for the purposes of the economy. Since the 1970s until present, in many regions of the world it is observed that the number of multi-month meteorological drought increases and they become more and more burdensome to the society and lead to significant material losses [BORDI et al 2009;LORENZO--LACRUZ et al 2013;VICENTE-SERRANO et al 2014]. The issue is also noted, monitored and a matter of numerous scientific analyses in Poland [JOKIEL 2004;ŁABĘDZKI 2007;RADZKA 2015;SOMOROWSKA 2009].…”

Section: Introductionmentioning

confidence: 99%

“…Similarly to the meteorological drought, the hydrological drought can also be characterized with the use of standardized hydrological indices. In the literature, there exist, among others, the following two indices: SWI (standardized water level index) [BHUIYAN 2004;SAHOO et al 2015] and SRI (standardized runoff index) [LORENZO-LACRUZ et al 2013;SHUKLA, WOOD 2008]. The former one is calculated based on cumulated water levels, the latter one is based on the data related to cumulated discharge.…”

Section: Introductionmentioning

confidence: 99%

“…According to LORENZO--LACRUZ et al [2013] the most severe hydrological droughts do not always occur in areas with the intense meteorological droughts, because their severity is also influenced by other factors, like amount of water consumed by the industry and society, effectiveness of water management and meteorological conditions in river's upper course. The influence of climatic factors (precipitation, high air temperature, high evaporation) and diverse external conditions may mitigate or aggravate hydrological drought as well as delay it in the relation to the beginning of meteorological drought.…”

Section: Introductionmentioning

confidence: 99%

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Impact of meteorological drought on hydrological drought in Toruń (central Poland) in the period of 1971–2015

Bąk¹,

Kubiak-Wójcicka²

2017

Journal of Water and Land Development

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The paper presents impact of meteorological drought on hydrological drought on the Vistula River in Toruń in the period of 1971-2015. It uses index method for the assessment of hydrological drought threat degree as a result of multi-month lasting meteorological drought. Based on the values of the SPI-24 (24-month standardized precipitation index) it was determined that meteorological drought in Toruń appeared six times and the total time of the phenomenon was 33% of the studied interval. Periods of hydrological drought on the Vistula River in Toruń have been determined based on the values of the SWI-24 (24-month standardized water level index). It has been found out that hydrological drought appeared four times and its total time was 10% longer that the meteorological drought. Based on the values of both indices (SPI-24 and SWI-24) correlation coefficient for months, seasons and years, it was found that the relation between both kind of droughts is weak (r < 0.5). That result is also confirmed in the distribution of both kinds of drought. Only in 32 months (8% of the total time) the intensity of the two simultaneously occurring drought was at least moderate. The achieved results revealed that the hydrological drought was occurring periodically, independent on meteorological drought. Hydrological drought was also influenced by the external factors (hydropower plant in Włocławek, Major Groundwater Basin -GZWP) and climate factors appearing in the upper and middle part of the river basin.

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“…Among various existing approaches, threshold methods (Hisdal et al, 2001;Lorenzo-Lacruz et al, 2013) are gaining increasing popularity. By this approach, extreme events are defined as occurring when the value of variable of interest is less than a given threshold.…”

Section: Introductionmentioning

confidence: 99%

Assessments of joint hydrological extreme risks in a warming climate in China

et al. 2015

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Understanding how hydrological extremes would respond to global warming and its associated uncertainties is important for better designing mitigation and adaption strategies to cope with global change. Very few works have investigated the changes in future hydrological extremes and, especially, the more devastating joint hydrological extremes over China. In this article, two combinations of joint extremes [i.e. high runoff/high soil moisture (HRHS) and low runoff/low soil moisture (LRLS)] are designed for analysis. To derive the scenarios of hydrological conditions, the bias-corrected daily climate projections from five global circulation models (GCMs) under the historical and Representative Concentration Pathways 8.5 (RCP8.5) emission scenarios are used to drive the calibrated Variable Infiltration Capacity (VIC) model from 1951 to 2099 over China. Results show notable increase of occurrence of HRHS in Northeast China, LRLS in Northwest and South of China under 2 ∘ C global warming. The spatial pattern of changes in joint extremes tends to remain stable with global temperature increase up to 3 ∘ C. Compared with the individual extreme risk, joint extreme are much more concentrated in Northwest and South China and the magnitude of changes is several times larger. Larger areas experiencing changes are found when using lower standards of extreme definition. Because hydrological regime may change gradually in response to climate change, the threshold derived from present regime may lead to misrepresentation of extreme risk analysis. This was demonstrated by the ten times smaller magnitude of changes when adopting the updated transient threshold representing the changing hydrological regime, thus providing a low-boundary of potential changes in extremes. Our results highlight the importance of considering the changing hydrological regime in addition to choosing various levels of threshold for extreme definition in order to cover the full range of possible extreme changes in a warming climate.

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Streamflow droughts in the Iberian Peninsula between 1945 and 2005: spatial and temporal patterns

Cited by 84 publications

References 55 publications

Drought Trends in the Iberian Peninsula over the Last 112 Years

Drought Trends in the Iberian Peninsula over the Last 112 Years

Impact of meteorological drought on hydrological drought in Toruń (central Poland) in the period of 1971–2015

Assessments of joint hydrological extreme risks in a warming climate in China

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