Non‐Stationary Flash Drought Analysis and Its Teleconnection With Low‐Frequency Climatic Oscillations DOI

Kanak Priya,

V. M. Reddy,

Litan Kumar Ray

и другие.

Hydrological Processes, Год журнала: 2024, Номер 38(10)

Опубликована: Окт. 1, 2024

ABSTRACT Flash droughts, characterised by their rapid onset and significant impacts on local communities agriculture, pose challenges for monitoring mitigation efforts due to unpredictable nature. Therefore, this study aims investigate the occurrence, characteristics influencing factors of flash droughts in Ganga River Basin (GRB) period 1981–2020. are identified using pentad averaged root zone soil moisture (PRZSM). The Mann‐Kendall trend test is used determine spatial temporal pattern drought characteristics. Furthermore, a multivariate index (MFDI) developed account combined effects Finally, wavelet coherence analysis evaluates relationship between climatic oscillations MFDI at sub‐basin scale. Utilising revised identification approach incorporating non‐stationary cumulative distribution functions (CDFs), identifies GRB, particularly emphasising higher occurrences Chambal Upper Yamuna Sub‐basins. Analysis under stationary conditions reveals increased frequency, severity decline rates, highlighting impact evaporation latent heat flux. Sub‐basin demonstrates with DMI shorter time scales (1 4‐year scales), while Lower displays pronounced association NINO3.4 (5.65‐year scale), indicating climate dynamics these regions. These findings provide valuable insights monitoring, prediction management strategies changing climate, need integrated approaches address complex interplay variability GRB.

Язык: Английский

Consequences of human conflicts on aquatic ecosystems in drylands areas: Future management perspective DOI
Luciana Gomes Barbosa, Ilia Ostrovsky, Manuela Morais

и другие.

Journal of Arid Environments, Год журнала: 2025, Номер 229, С. 105375 - 105375

Опубликована: Апрель 9, 2025

Язык: Английский

Процитировано

0
Drought Dynamics and Vulnerability—Preface DOI Open Access
Michael Nones, Martijn J. Booij, Emilia Karamuz

и другие.

Hydrological Processes, Год журнала: 2025, Номер 39(2)

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Non‐Stationary Flash Drought Analysis and Its Teleconnection With Low‐Frequency Climatic Oscillations DOI

Kanak Priya,

V. M. Reddy,

Litan Kumar Ray

и другие.

Hydrological Processes, Год журнала: 2024, Номер 38(10)

Опубликована: Окт. 1, 2024

ABSTRACT Flash droughts, characterised by their rapid onset and significant impacts on local communities agriculture, pose challenges for monitoring mitigation efforts due to unpredictable nature. Therefore, this study aims investigate the occurrence, characteristics influencing factors of flash droughts in Ganga River Basin (GRB) period 1981–2020. are identified using pentad averaged root zone soil moisture (PRZSM). The Mann‐Kendall trend test is used determine spatial temporal pattern drought characteristics. Furthermore, a multivariate index (MFDI) developed account combined effects Finally, wavelet coherence analysis evaluates relationship between climatic oscillations MFDI at sub‐basin scale. Utilising revised identification approach incorporating non‐stationary cumulative distribution functions (CDFs), identifies GRB, particularly emphasising higher occurrences Chambal Upper Yamuna Sub‐basins. Analysis under stationary conditions reveals increased frequency, severity decline rates, highlighting impact evaporation latent heat flux. Sub‐basin demonstrates with DMI shorter time scales (1 4‐year scales), while Lower displays pronounced association NINO3.4 (5.65‐year scale), indicating climate dynamics these regions. These findings provide valuable insights monitoring, prediction management strategies changing climate, need integrated approaches address complex interplay variability GRB.

Язык: Английский

Процитировано

1