On regional drought estimation and analysis

Rossi, Giuseppe; Benedini, Marcello; Tsakiris, George; Giakoumakis, Spyros

doi:10.1007/bf00872280

Cited by 136 publications

(69 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The method complements the recent work of other authors (e.g. Rossi et al, 1992;Lloyd-Hughes andSaunders, 2002 or Hisdal andTallaksen, 2003) who emphasize the regional nature of drought and the necessity of studying it within a regional context. Figure 2 )) forŽatec indicate a climate which is significantly drier than the regional climate, the wetness of the mountainous station of Lysá Hora is depicted well by the corresponding rSPI values.…”

Section: Standardised Precipitation Indexmentioning

confidence: 50%

Developing a regional drought climatology for the Czech Republic

Trnka

Dubrovský

Svoboda

et al. 2008

Intl Journal of Climatology

View full text Add to dashboard Cite

This study presents a methodology for the analysis of a drought climatology within a particular region that enables a user to define drought areas at a high spatial resolution. It is suitable for quantifying the relative differences in the intensity of drought spells, and the frequency and duration between individual stations within an area of interest. The methodology is based on the Standardized Precipitation Index (SPI), the Palmer Drought Severity Index (PDSI) and the Palmer Z-index (Z-index). However, the climatological parameters needed to process and calculate the indices were not derived separately for each site as is usually done, but were based on a set of all available weather stations in the studied region. This approach was utilized in the case study including all of the Czech Republic using 233 climatological stations with monthly records of mean temperature and precipitation for the period 1961-2000. The study is also focussed on the development of more efficient ways of communicating results to the stakeholders. Therefore, a method allowing for an integration of several drought indices into a single indicator called the Integrated Climatological Drought Indicator (ICDI) was developed. The newly developed method allowed for an objective identification of the drought-prone regions of the country that were defined as areas with a chance (higher than 50 and 60% respectively) of moderate or extreme drought. We have found that 12.3 and 3% of the country area, respectively, belong within these categories and that these regions also happen to be prime agricultural areas. The conclusions were supported by the results of a cluster analysis. Finally, the analysis of time trends was conducted, which showed that the majority of 233 stations had grown significantly drier during the studied period. The main driving force behind this development was found to be an increase of temperature, especially in the 1990s.

show abstract

Section: Standardised Precipitation Indexmentioning

confidence: 50%

Developing a regional drought climatology for the Czech Republic

Trnka

Dubrovský

Svoboda

et al. 2008

Intl Journal of Climatology

View full text Add to dashboard Cite

show abstract

“…Hydrological drought classification is mainly done for sectors (e.g. socio-economic drought; Mishra and Singh, 2010) and based on drought severity (Dracup et al, 1980;Rossi et al, 1992;McKee et al, 1993McKee et al, , 1995Lloyd-Hughes and Saunders, 2002;Smakhtin and Hughes, 2004), but not based on processes. For meteorological droughts, some process-based classifications have been developed (Phillips and McGregor, 1998;Fowler and Kilsby, 2002;Mishra and Singh, 2010), but hydrological drought events are either defined in very general terms and analysed only by their statistics (Andreadis et al, 2005;Fleig et al, 2006;Sheffield and Wood, 2007;Sheffield, 2008;Sheffield et al, 2009) or a single drought event with its Fig.…”

Section: A F Van Loon and H A J Van Lanen: Hydrological Drought mentioning

confidence: 99%

A process-based typology of hydrological drought

Loon

Lanen

2012

Hydrol. Earth Syst. Sci.

340

270

View full text Add to dashboard Cite

Abstract. Hydrological drought events have very different causes and effects. Classifying these events into distinct types can be useful for both science and management. We propose a hydrological drought typology that is based on governing drought propagation processes derived from catchment-scale drought analysis. In this typology six hydrological drought types are distinguished,warm snow season drought, and (vi) composite drought. The processes underlying these drought types are the result of the interplay of temperature and precipitation at catchment scale in different seasons. As a test case, about 125 groundwater droughts and 210 discharge droughts in five contrasting headwater catchments in Europe have been classified. The most common drought type in all catchments was the classical rainfall deficit drought (almost 50 % of all events), but in the selected catchments these were mostly minor events. If only the five most severe drought events of each catchment are considered, a shift towards more rain-to-snow-season droughts, warm snow season droughts, and composite droughts was found. The occurrence of hydrological drought types is determined by climate and catchment characteristics. The drought typology is transferable to other catchments, including outside Europe, because it is generic and based upon processes that occur around the world. A general framework is proposed to identify drought type occurrence in relation to climate and catchment characteristics.

show abstract

“…In comparison with other natural hazards, drought tends to start slowly often without warning, lasts for significant period of time covering large spatial areas, and may linger for years after termination (Lena et al 2013;Mishra and Singh 2010;Rossi et al 1992). Recent studies show that the agricultural production has declined significantly in many parts of world including Asia due to increased frequency and severity of drought (Downing and Bakker 2000).…”

Section: Introductionmentioning

confidence: 99%

Drought risk assessment in central Nepal: temporal and spatial analysis

et al. 2015

View full text Add to dashboard Cite

This paper presents temporal and spatial pattern of drought phenomena in central Nepal using standardized precipitation index (SPI) at multiple time scales. The study is based on 32 years of monthly precipitation data from 40 meteorological stations from 1981 to 2012. Results indicate that, while there is no distinct trend in regional precipitation, interannual variation is large. Trend analysis of drought index shows that most stations are characterized by increases in both severity and frequency of drought and trend is stronger for longer drought time scales. Over the study period, the summer 123Nat Hazards (2016) 80:1913-1932 DOI 10.1007/s11069-015-2055 season of 2004, 2005, 2006, 2009 and winters 2006, 2008 and 2009 were the worst widespread droughts. These dry periods have a serious impact on agriculture-livestock production of central Nepal. Better understanding of these SPI dynamics could help in understanding the characteristics of droughts and also to develop effective mitigation strategies.

show abstract

On regional drought estimation and analysis

Cited by 136 publications

References 12 publications

Developing a regional drought climatology for the Czech Republic

Developing a regional drought climatology for the Czech Republic

A process-based typology of hydrological drought

Drought risk assessment in central Nepal: temporal and spatial analysis

Contact Info

Product

Resources

About