Spatiotemporal variability assessment and accuracy evaluation of Standardized Precipitation Index and Standardized Precipitation Evapotranspiration Index in Malaysia

Tan, Yi Xun; Ng, Jing Lin; Huang, Yuk Feng

doi:10.1007/s12145-022-00921-5

Cited by 9 publications

(2 citation statements)

References 70 publications

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“…In this study, we performed a spatial analysis to evaluate the drought frequency (DF) of meteorological, hydrological, and agricultural droughts, as indicated by the SPEI, SRI, and SRI, respectively [37]. This analysis spanned historical (1975-2014) and projected periods (2015-2094) under the SSP126, SSP245, and SSP585 scenarios.…”

Section: Spatiotemporal Patterns Of Drought Changes Under Climate Changementioning

confidence: 99%

Investigating the Effect of Climate Change on Drought Propagation in the Tarim River Basin Using Multi-Model Ensemble Projections

Ding,

Yu,

Yang

et al. 2023

Atmosphere

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Recent studies on China’s arid and semi-arid regions, particularly the Tarim River Basin (TRB), have shown an increase in the intensity and frequency of extreme weather events. This research examines the link between meteorological droughts, as measured by the Standardized Precipitation Evapotranspiration Index (SPEI), and hydrological droughts, as indicated by the Standardized Runoff Index (SRI) and the Standardized Terrestrial Water Storage Index (STI), over various time scales. Historical data indicate that SPEI drought frequency (DF) was 14.3–21.9%, with prevalent events in the northern oases. SRI DF ranged from 9.0% to 35.8%, concentrated around the Taklamakan and Kumtag Deserts, while STI DF varied between 4.4% and 32.7%, averaging 15% basin-wide. Future projections show an increased DF of SPEI in deserts and a decrease in oases; SRI DF decreased in deserts but increased in oases. STI changes were more moderate. The study also found a higher risk of drought progression from SPEI to SRI in the southwestern and northeastern oases, exceeding 50% probability, while central and eastern TRB had lower risks. The western TRB and inner Taklamakan Desert faced higher risks of SPEI to STI progression, with probabilities over 45%, in contrast to the lower risks in the eastern and central oases. The concurrence of SRI/STI with moderate to extreme SPEI droughts led to a higher probability and area of SRI/STI droughts, whereas consistent SPEI types showed a reduced induced probability and extent of SRI/STI droughts. This study enhances the understanding of drought propagation from meteorological to hydrological droughts in the TRB and contributes to the prevention of hydrological drought to a certain extent.

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Section: Spatiotemporal Patterns Of Drought Changes Under Climate Changementioning

confidence: 99%

Investigating the Effect of Climate Change on Drought Propagation in the Tarim River Basin Using Multi-Model Ensemble Projections

Ding,

Yu,

Yang

et al. 2023

Atmosphere

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“…However, the spatial comparability of PDSI is poor, the time scale is single, there is no variable time scale, and the SPI also does not take into account the influence of evapotranspiration fluctuations caused by temperature changes on drought [19,20]. Therefore, Vicente-Serrano et al proposed SPEI, which combines the advantages of SPI and PDSI, considers the influence of temperature has the characteristics of spatial comparability, and has been widely used at home and abroad [21,22]. Kamruzzaman et al investigated the spatial and temporal characteristics of drought in Bangladesh using SPI and SPEI, and the results showed that SPEI was more usable than SPI [23].…”

Section: Introductionmentioning

confidence: 99%

Temporal and Spatial Evolution of Meteorological Drought in Inner Mongolia Inland River Basin and Its Driving Factors

Zhang,

Guo,

et al. 2024

Sustainability

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In order to analyze the temporal and spatial evolution of meteorological drought and explore its driving factors, the inland river basin of Inner Mongolia (IMIRB) was taken as a typical research area, the Standardized Precipitation Evapotranspiration Index (SPEI) of various scales was calculated, and the spatio-temporal trend change characteristics of meteorological drought were analyzed combined with the modified Mann–Kendall trend test (MMK). The typical meteorological drought events were analyzed by using the three-dimensional identification method, and the spatio-temporal evolution characteristics and dynamic evolution law of meteorological drought were analyzed comprehensively and accurately. The driving effects of Pacific Decadal Oscillation (PDO), North Atlantic Multidecadal Oscillation (AMO), Arctic Oscillation (AO), El Niño-Southern Oscillation (ENSO), North Atlantic Oscillation (NAO), and sunspot on meteorological drought were investigated by using the cross wavelet method. The results are as follows: (1) with the increase of SPEI time scale, the frequency of meteorological drought decreased, but the duration and intensity of drought increased; (2) the trend was greatest in spring, with the largest number of areas showing a significant downward trend in SPEI, the strongest persistence in intensity, and significant aridification characteristics; (3) summer meteorological droughts had the largest area of high intensity drought but the smallest area of high frequency areas, and winter droughts had the smallest area of high intensity drought but the largest percentage of high frequency areas; (4) the meteorological drought event that occurred from April 2017 to December 2017 was the most serious, and reached its maximum value in June 2017, which mainly experienced five processes: occurrence—intensification—attenuation—re-intensification—extinction; (5) atmospheric circulation factor, sunspot, and meteorological drought of IMIRB were correlated, and ENSO had the greatest effect on drought. This study provides effective theoretical support for IMIRB drought prevention and disaster reduction.

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Identification of the most suitable meteorological drought index for a region: a case study of Raigarh district in Chhattisgarh

Panigrahi,

Vidyarthi

2024

Nat Hazards

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Spatiotemporal variability assessment and accuracy evaluation of Standardized Precipitation Index and Standardized Precipitation Evapotranspiration Index in Malaysia

Cited by 9 publications

References 70 publications

Investigating the Effect of Climate Change on Drought Propagation in the Tarim River Basin Using Multi-Model Ensemble Projections

Investigating the Effect of Climate Change on Drought Propagation in the Tarim River Basin Using Multi-Model Ensemble Projections

Temporal and Spatial Evolution of Meteorological Drought in Inner Mongolia Inland River Basin and Its Driving Factors

Identification of the most suitable meteorological drought index for a region: a case study of Raigarh district in Chhattisgarh

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