Understanding Flash Drought Dynamics: An Approach for Enhancing Sustainability in Resource Management DOI Open Access

Mengge Lu,

Huaiwei Sun, Hui Qin

et al.

IOP Conference Series Earth and Environmental Science, Journal Year: 2024, Volume and Issue: 1429(1), P. 012010 - 012010

Published: Dec. 1, 2024

Abstract Drought is a multifaceted phenomenon driven by both natural climate fluctuations and human activities. Unlike traditional, slow-developing droughts, flash droughts (FDs) emerge suddenly intensify rapidly, posing significant challenges for resource management. The lack of effective tools to quantify FDs exacerbates stakeholders’ concerns, particularly due the risks they pose water management, food security, environmental sustainability. Given their nature, evolve across time space, traditional two-dimensional methods often fail capture these dynamics. To address this issue, we developed three-dimensional spatiotemporal framework identifying analyse spatial temporal features migration patterns FDs. results reveal that in China, tend migrate north southeast, with trend becoming increasingly pronounced as drought intensity increases. From 1982 2022, South China Northwest experienced increases events. Flash primarily occur during growing season, rising proportion events leading heightened crop yields vegetation growth. Additionally, percentage begin within one pentad has significantly increased, indicating shorter onset times an accelerated occurrence rate.

Language: Английский

Investigating the Characteristics and Drivers of Slow Droughts and Flash Droughts: A Multi‐Temporal Scale Drought Identification Framework DOI Creative Commons
Zixuan Qi, Yuchen Ye, Yanpeng Cai

et al.

Water Resources Research, Journal Year: 2025, Volume and Issue: 61(2)

Published: Feb. 1, 2025

Abstract Global climate change has altered the characteristics of conventional drought events, with an increasing number Slow droughts (SD) rapidly transitioning into Flash (FD). This study introduces a novel multi‐temporal scale identification framework (MTSDIF) that classifies historical agricultural events three types: SD, FD, and Slow‐to‐Flash Drought (SFD). Based on MTSDIF, GLDAS‐Noah root zone soil moisture dataset was used to analyze spatiotemporal characteristics, evolution, driving factors in China. Our confirms effectiveness proposed MTSDIF classifying different onset speeds (SD, SFD). The results indicate that, from 1980 2020, types China exhibited short‐term, medium‐term, long‐term periodic oscillations. Before 2000, SD were predominant type China, but post‐2000, areas affected by FD SFD have been continuously expanding. Compared key meteorological elements influencing show anomalies exceeding 0.5 times standard deviation. In southeastern regions human‐impacted soils, leached incept soils exhibit higher response frequency FD. Sea surface temperature indices, including interannual El Niño‐Southern Oscillation Pacific interdecadal variations such as +PDO −AMO, significantly influence occurrence monsoon ( p < 0.01). Together, highlight necessity understanding disparities consistencies land‐atmosphere‐ocean mechanisms behind varying speeds.

Language: Английский

Citations

3
Development of an indicator system for solar-induced chlorophyll fluorescence monitoring to enhance early warning of flash drought DOI Creative Commons
Zixuan Qi, Yuchen Ye, Sun Lian

et al.

Agricultural Water Management, Journal Year: 2025, Volume and Issue: 312, P. 109397 - 109397

Published: March 9, 2025

Language: Английский

Citations

1
Unravelling spatiotemporal propagation processes among meteorological, soil, and evaporative flash droughts from a three-dimensional perspective DOI Creative Commons
Chen Hu, Dunxian She, Gangsheng Wang

et al.

Agricultural Water Management, Journal Year: 2025, Volume and Issue: 308, P. 109294 - 109294

Published: Jan. 10, 2025

Language: Английский

Citations

0
Seasonal water storage of large reservoirs exacerbates eutrophication risk in the fluctuating backwater zone: A case study of Three Gorges Reservoir, China DOI Creative Commons
Xian Liu, Wei Huang, Zixuan Qi

et al.

Ecological Indicators, Journal Year: 2025, Volume and Issue: 171, P. 113100 - 113100

Published: Jan. 23, 2025

Language: Английский

Citations

0
Nonlinear propagation of meteorological to hydrological drought: Contrasting dynamics in humid and semi-arid regions DOI

Yunyun Li,

Qian Deng,

Jianxia Chang

et al.

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 133012 - 133012

Published: March 1, 2025

Language: Английский

Citations

0
Attribution Analysis of Water‐Sediment Nexus Changes for the Fluctuating Backwater Zone of the Three Gorges Reservoir Under Changing Environmental Conditions DOI
Hao Yang, Wei Huang, Zixuan Qi

et al.

River Research and Applications, Journal Year: 2025, Volume and Issue: unknown

Published: March 31, 2025

ABSTRACT As one of the carbon neutralization or reduction strategies, constructing large hydroelectric dams leads to formation fluctuating backwater zones (FBZs). Synchronization water and sediment under impacts climatic changes human activities over FBZs is still an open question due diverse particularities zones. Taking FBZ world's largest power station, that is, Three Gorges Reservoir (TGR), as a typical example, we attempt address such in this study. Based on analyses water‐sediment characteristics, relationships, covariations, Budyko hypothesis attribution decomposition method are coupled quantitatively examine synchronization. Modeling results reveal construction cascade reservoirs dominates decrease load (e.g., 73.9% for Jialing River basin from 1985 2020), alteration runoff‐sediment relationships across FBZ. The dominator (accounting 46.01%) increasing annual average runoffs upstream wetting climate, while (64.14%) decreasing ones tributary activities; by contrast, play dominant roles (from 72.1% 98.1%) loads These findings provide scientific support addressing water‐sediment‐related issues navigational safety, deposition, environment worldwide FBZs.

Language: Английский

Citations

0
Validation of Inland Water Surface Elevation from SWOT Satellite Products: A Case Study in the Middle and Lower Reaches of the Yangtze River DOI Creative Commons
Yao Zhao,

June Fu,

Zhiguo Pang

et al.

Remote Sensing, Journal Year: 2025, Volume and Issue: 17(8), P. 1330 - 1330

Published: April 8, 2025

The Surface Water and Ocean Topography (SWOT) satellite mission, jointly developed by NASA several international collaboration agencies, aims to achieve high-resolution two-dimensional observations of global surface water. Equipped with the advanced Ka-band radar interferometer (KaRIn), it significantly enhances ability monitor water provides a new data source for obtaining large-scale elevation (WSE) at high temporal spatial resolution. However, accuracy applicability its scientific products inland bodies still require validation. This study obtained three from SWOT between August 2023 December 2024: Level 2 KaRIn high-rate river single-pass vector product (L2_HR_RiverSP), lake (L2_HR_LakeSP), mask pixel cloud (L2_HR_PIXC). These were compared in situ level validate their retrieving levels across eight different regions middle lower reaches Yangtze River (MLRYR) evaluate each product. experimental results show following: (1) inversion L2_HR_RiverSP L2_HR_LakeSP varies regions. In some areas, extracted WSE aligns closely trend, coefficient determination (R2) exceeding 0.9, while other R2 is (less than 0.8), error larger (with Root Mean Square Error (RMSE) greater 1.0 m). (2) proposes combined denoising method based on Interquartile Range (IQR) Adaptive Statistical Outlier Removal (ASOR). Compared products, L2_HR_PIXC product, after denoising, shows significant improvements all metrics inversion, 0.85, Absolute (MAE) less 0.4 m, RMSE 0.5 m. Overall, demonstrates capability precision, especially through which broader application potential will play an important role dynamics monitoring refined resource management research.

Language: Английский

Citations

0
Evaluating the phase evolution of CMIP GCMs for agricultural climate-change impact assessments in China DOI

Linlin Yao,

Qian Tan,

Guanhui Cheng

et al.

Agricultural and Forest Meteorology, Journal Year: 2024, Volume and Issue: 359, P. 110282 - 110282

Published: Oct. 28, 2024

Language: Английский

Citations

0
Understanding Flash Drought Dynamics: An Approach for Enhancing Sustainability in Resource Management DOI Open Access

Mengge Lu,

Huaiwei Sun, Hui Qin

et al.

IOP Conference Series Earth and Environmental Science, Journal Year: 2024, Volume and Issue: 1429(1), P. 012010 - 012010

Published: Dec. 1, 2024

Abstract Drought is a multifaceted phenomenon driven by both natural climate fluctuations and human activities. Unlike traditional, slow-developing droughts, flash droughts (FDs) emerge suddenly intensify rapidly, posing significant challenges for resource management. The lack of effective tools to quantify FDs exacerbates stakeholders’ concerns, particularly due the risks they pose water management, food security, environmental sustainability. Given their nature, evolve across time space, traditional two-dimensional methods often fail capture these dynamics. To address this issue, we developed three-dimensional spatiotemporal framework identifying analyse spatial temporal features migration patterns FDs. results reveal that in China, tend migrate north southeast, with trend becoming increasingly pronounced as drought intensity increases. From 1982 2022, South China Northwest experienced increases events. Flash primarily occur during growing season, rising proportion events leading heightened crop yields vegetation growth. Additionally, percentage begin within one pentad has significantly increased, indicating shorter onset times an accelerated occurrence rate.

Language: Английский

Citations

0