Investigating Effective Reconnaissance Drought Index Ability to Reproduce Drought Signature over the Massili Basin (Burkina Faso) DOI Open Access

Tog-Noma Patricia Emma Bontogho,

Michelline Marie Regina Kansole,

Mercy A. Abarike

et al.

Journal of Water Resources and Ocean Science, Journal Year: 2024, Volume and Issue: 13(5), P. 116 - 123

Published: Nov. 12, 2024

Drought is a significant natural hazard particularly in arid and semi-arid regions where water resources management already challenging. Burkina Faso, landlocked country located the Sahel region, highly vulnerable to drought due its climate. The has experienced recurrent droughts since 1970s, with impacts on population economy. To develop effective mitigation strategies, comprehensive understanding of characteristics required. This study investigates historical long-term trends Massili basin central Faso. For this purpose, features been analyzed based Effective Reconnaissance Index (eRDI) at various months accumulation. calculate for Basin, monthly precipitation (Prct), minimum temperature (Tmin), maximum (Tmax) data spanning from 1960 2021 were obtained National Meteorological Agency Potential evapotranspiration (ETP) was estimated using Hargreaves method. Our findings indicate that under eRDI-3, 1964 (1.86), 2020 (1.53), (0.63) are wettest years, while 1963 (-0.65) 1998 (-0.76) driest. Under eRDI-12, portion values falls within range -0.14 0.03. In case eRDI-24, substantial number cluster between -0.08 0.08. distribution highlights near-normal conditions (-0.99 0.99) as most frequent occurrence watershed. desertification area topic discussion decades. However, these reinforce prevailing belief partial re-greening region.

Language: Английский

Deep learning-driven regional drought assessment: an optimized perspective DOI

Chandrakant M. Kadam,

Udhav V. Bhosle,

Raghunath S. Holambe

et al.

Earth Science Informatics, Journal Year: 2024, Volume and Issue: 17(2), P. 1523 - 1537

Published: Feb. 13, 2024

Language: Английский

Citations

5
Integrating Climate Indices and Land Use Practices for Comprehensive Drought Monitoring in Syria: Impacts and Implications DOI Creative Commons
Shifa Mathbout, Georgios Boustras, Pierantonios Papazoglou

et al.

Environmental and Sustainability Indicators, Journal Year: 2025, Volume and Issue: unknown, P. 100631 - 100631

Published: Feb. 1, 2025

Language: Английский

Citations

0
Evaluating the standardized and threshold based drought indices for historical drought detection in the Great Ruaha River Basin, Tanzania DOI Creative Commons
Erasto Benedict Mukama, Estifanos Addisu Yimer, Winfred Mbungu

et al.

Natural Hazards, Journal Year: 2025, Volume and Issue: unknown

Published: May 12, 2025

Language: Английский

Citations

0
Spring Meteorological Drought over East Asia and Its Associations with Large-Scale Climate Variations DOI Open Access
Meng Gao, Ruijun Ge, Yueqi Wang

et al.

Water, Journal Year: 2024, Volume and Issue: 16(11), P. 1508 - 1508

Published: May 24, 2024

East Asia is a region that highly vulnerable to drought disasters during the spring season, as this period critical for planting, germinating, and growing staple crops such wheat, maize, rice. The climate in significantly influenced by three large-scale variations: Pacific Decadal Oscillation (PDO), El Niño–Southern (ENSO), Indian Ocean Dipole (IOD) Oceans. In study, meteorological was quantified using standardized precipitation evapotranspiration index (SPEI) March, April, May. Initially, coupled networks were established two variables: sea surface temperature (SST) SPEI. directed links from SST SPEI determined based on Granger causality test. These revealed associations between variations droughts, indicating semi-arid areas are more sensitive these variations. spring, PDO ENSO do not cause extreme wetness or dryness Asia, whereas IOD does. remote impacts of can be partially explained atmospheric circulations, where combined effects air temperatures, winds, pressure fields determine wet/dry conditions Asia.

Language: Английский

Citations

3
Bivariate and Partial Wavelet Coherence for Revealing the Remote Impacts of Large-Scale Ocean-Atmosphere Oscillations on Drought Variations in Xinjiang, China DOI Open Access
Liguang Jiang, Meng Gao, Jicai Ning

et al.

Water, Journal Year: 2025, Volume and Issue: 17(7), P. 957 - 957

Published: March 25, 2025

Xinjiang, an arid area located in the central part of Eurasian continent with high evaporation and low precipitation, experiences frequent droughts. This study builds on previous research by incorporating five key ocean-atmosphere oscillations using one-month SPEI as a meteorological drought indicator. Monthly time series precipitation temperature from 53 stations are utilized to calculate monthly series, seasonal Kendall test analyzes trends. Despite increased conditions Xinjiang worsened due temperatures, especially south, during 1961–2017. The clustered agglomerative hierarchical method, basically reflecting Xinjiang’s topographical climatic diversity. However, classical correlation methods show weak or negligible overall between large-scale oscillators. Therefore, partial wavelet coherence (PWC) method was used detect scale-specific correlations. Both bivariate (BWC) PWC detected significant correlations oscillators at some specific scales. Our analyses indicate that southern droughts more influenced Pacific Indian Ocean oscillators, while northern affected Atlantic Arctic climate variations.

Language: Английский

Citations

0
Temporal and spatial characteristics of ecological drought in the Inland River Basin and its driving factors DOI Creative Commons
Zezhong Zhang, Jian Liu, Kai Feng

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Nov. 21, 2024

Most of the previous studies only used index vegetation growth to characterize ecological drought. This study built a Standardized Ecological Water Deficit Index (SEWDI) , analysed its space–time evolution characteristics from perspectives time, space and spatio-temporal coupling, extractes feature variables by three-dimensional clustering, typical drought events, effect teleconnection factors on was investigated using cross wavelet analysis . The reliability SEWDI quantitatively evaluated comparing r values Precipitation (SPI), Evapotranspiration (SPEI), Soil Moisture (SSMI), self-calibrating Palmer Drought Severity (scPDSI), with Solar-induced Fluorescence (SSIF) at various scales in time.The results demonstrated that: (1) Inland River Basin showed weakening trend 1982 2015. Seasonal wetting west east, is most evident spring. It may be related policy returning farmland forest eastern part IRB Inner Mongolia Autonomous Region. (2) Three-dimensional recognition method could extract more detailed characteristic events. A total 133 events occurred during 1982–2015, had longer duration intensity after twenty-first century. (3) June 2005 February 2007 severe event record, which lasted for 21 months. 44.65 × 105 month·km2, area 23.79 104km2. 2005, intensified September attenuated 2006, re-intensified August 2006 re-attenuated (extinction) 2007. migration spread northeast (4) Among teleconnecting factors, ENSO has complex greatest influence Basin. (5) In addition having high correlation other indexs, can also accurately reflect effects vegetation. When occur, precipitation decreases significantly. However, soil moisture ignored this study, aims provide ideas calculating small watershed. How calculate water deficiency different regions focus future work.

Language: Английский

Citations

1
Temporal and spatial characteristics of ecological drought in the Inland River Basin and its driving factors DOI Creative Commons
Zezhong Zhang, Jian Liu, Kai Feng

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: May 3, 2024

Abstract Most of the previous studies only used index vegetation growth to characterize ecological drought. This study built a Standardized Ecological Water Deficit Index (SEWDI), analysed its space-time evolution characteristics from perspectives time, space and spatio-temporal coupling, extractes feature variables by three-dimensional clustering, typical drought events, effect teleconnection factors on was investigated using cross wavelet analysis. The reliability SEWDI quantitatively evaluated comparing r values Precipitation (SPI), Evapotranspiration (SPEI), Soil Moisture Index(SSMI), self-calibrating Palmer Drought Severity (scPDSI), with Solar-induced Fluorescence (SSIF) at various scales in time.The results demonstrated that: (1) Inland River Basin showed weakening trend 1982 2015. Seasonal wetting west east, is most evident spring. (2) Three-dimensional recognition method could extract more detailed characteristic events. A total 133 events occurred during 1982–2015, had longer duration intensity after 21st century. (3) June 2005 February 2007 severe event record, which lasted for 21 months. 44.65×105month·km2, area 23.79×104km2. 2005, intensified September attenuated 2006, re-intensified August 2006 re-attenuated (extinction) 2007. migration spread northeast (4) Among teleconnecting factors, ENSO has complex greatest influence Basin. (5) In addition having high correlation other indexs, can also accurately reflect effects vegetation.

Language: Английский

Citations

0
Drought Characteristics during Spring Sowing along the Great Wall Based on the MCI DOI Creative Commons
Guofang Wang,

Juanling Wang,

Wei Sun

et al.

Agronomy, Journal Year: 2024, Volume and Issue: 14(10), P. 2195 - 2195

Published: Sept. 24, 2024

The region along the Great Wall is a typical dryland agricultural zone, serving as both potential area for staple grain production and key specialty crops like coarse grains cool-climate vegetables. Studying characteristics of drought during spring sowing period crucial developing diversified planting strategies ensuring food security. This study analyzes conditions from 1960 to 2023, revealing spatial temporal distribution in quantifying impact climate change on frequency intensity. By doing so, it fills gap existing research, which often lacks long-term, multi-dimensional analysis characteristics. Using daily meteorological data April 20 May between employs Meteorological Composite Drought Index (MCI) quantitatively identify examine evolution region. results show that, scale, mild moderate droughts 60.45% 25.19%, respectively, with no occurrences severe or extreme drought. On an annual intensity ratio affected stations increasing trend, decrease increase occurrences. Additionally, follows pattern “higher east than west” north south”. also finds that migration centers shows clear evolution, center shifting southwestward 1960s 2000s, then moving northeastward 2000s 2023. These findings provide critical support optimizing resistance offer new insights future research relationship change. It suggested practices water resource management policies should be adjusted according centers, particular focus mitigation measures period.

Language: Английский

Citations

0
Investigating Effective Reconnaissance Drought Index Ability to Reproduce Drought Signature over the Massili Basin (Burkina Faso) DOI Open Access

Tog-Noma Patricia Emma Bontogho,

Michelline Marie Regina Kansole,

Mercy A. Abarike

et al.

Journal of Water Resources and Ocean Science, Journal Year: 2024, Volume and Issue: 13(5), P. 116 - 123

Published: Nov. 12, 2024

Drought is a significant natural hazard particularly in arid and semi-arid regions where water resources management already challenging. Burkina Faso, landlocked country located the Sahel region, highly vulnerable to drought due its climate. The has experienced recurrent droughts since 1970s, with impacts on population economy. To develop effective mitigation strategies, comprehensive understanding of characteristics required. This study investigates historical long-term trends Massili basin central Faso. For this purpose, features been analyzed based Effective Reconnaissance Index (eRDI) at various months accumulation. calculate for Basin, monthly precipitation (Prct), minimum temperature (Tmin), maximum (Tmax) data spanning from 1960 2021 were obtained National Meteorological Agency Potential evapotranspiration (ETP) was estimated using Hargreaves method. Our findings indicate that under eRDI-3, 1964 (1.86), 2020 (1.53), (0.63) are wettest years, while 1963 (-0.65) 1998 (-0.76) driest. Under eRDI-12, portion values falls within range -0.14 0.03. In case eRDI-24, substantial number cluster between -0.08 0.08. distribution highlights near-normal conditions (-0.99 0.99) as most frequent occurrence watershed. desertification area topic discussion decades. However, these reinforce prevailing belief partial re-greening region.

Language: Английский

Citations

0