Flash drought: A state of the science review

Wiley Interdisciplinary Reviews Water, Journal Year: 2024, Volume and Issue: 11(3)

Published: Jan. 9, 2024

Abstract In the two decades, since advent of term “flash drought,” considerable research has been directed toward topic. Within scientific community, we have actively forged a new paradigm that avoided chaotic evolution conventional drought but instead recognizes flash droughts distinct dynamics and, particularly, impacts. We moved beyond initial debate over definition to centralized focus on triad rapid onset, development, and associated The refinement this general set principles led significant progress in determining key variables for monitoring identifying notable case studies, compiling fundamental physical characteristics drought. However, critical areas still remain, including advancing our knowledge atmospheric oceanic drivers drought; developing drought‐specific detection indices systems tailored practitioners; improving subseasonal‐to‐seasonal prediction these events; constraining uncertainty impact projections; using social science further understanding impacts, particularly with regard sectors lie outside traditional hydroclimatological focus, such as wildfire management food‐security monitoring. Researchers stakeholders working together topics will assure society is resilient changing climate. This article categorized under: Science Water > Extremes

Language: Английский

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Heterogeneity in vegetation recovery rates post-flash droughts across different ecosystems

Environmental Research Letters, Journal Year: 2024, Volume and Issue: 19(7), P. 074028 - 074028

Published: June 7, 2024

Abstract Flash droughts, as sub-seasonal phenomena, are characterized by their rapid onset and significant impact on terrestrial ecosystems. However, understanding how vegetation responds to flash droughts the mechanisms governing recovery remains elusive. Here, we analysed response of productivity identified most relevant drivers controlling using two soil moisture datasets (ERA5-land Global Land Data Assimilation System) satellite-based proxies (gross primary productivity, solar-induced chlorophyll fluorescence). Our results show that South China Northeast stand out hotspots for with higher frequency speed. Notably, although in cropland is relatively low, speed very high, a median 10.9% per pentad. Most ecosystems can recover normal state within 25 d. Vegetation shallow roots, such grassland, rapidly droughts. Ecosystems generally exhibit extended time increasing plant rooting depth. The rate from mainly controlled physiology (decline upon exposure drought) modulated drought characteristics, especially severity forests grassland. This study provides valuable insights into underlying responses

Language: Английский

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Understanding the effects of flash drought on vegetation photosynthesis and potential drivers over China

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 931, P. 172926 - 172926

Published: May 1, 2024

Language: Английский

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Increased atmospheric water stress on gross primary productivity during flash droughts over China from 1961 to 2022

Weather and Climate Extremes, Journal Year: 2024, Volume and Issue: 44, P. 100667 - 100667

Published: March 28, 2024

Flash droughts threaten ecosystems substantially because of the fast onset and low predictability. Soil atmospheric water stress are two main factors reducing ecosystem productivity during flash droughts. However, long-term trends in soil on vegetation unclear. By conducting land surface model simulations, this study investigated impact gross primary (GPP) hot periods droughts, as well changes from 1961 to 2022 over China. The areas dominated by were 65.2% 19.9% respectively. During raised 39.4%, reduced 48.7%. 1961–2022, frequency, intensity, duration all showed significant upward (p < 0.05) Meanwhile, GPP decreased significantly 0.05), but increased 0.05). Correspondingly, at 0.8%/decade, while rose 1.6%/decade With sensitivity we found that was weakened North China plain under irrigated conditions, trend consistent with non-irrigated conditions Our indicated importance moisture climate warming.

Language: Английский

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How hydrothermal factors and CO2 concentration affect vegetation carbon sink over time and elevation gradient

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 449, P. 141800 - 141800

Published: March 14, 2024

Language: Английский

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Spatiotemporal patterns of net primary productivity of subtropical forests in China and its response to drought

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 913, P. 169439 - 169439

Published: Dec. 20, 2023

Language: Английский

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Global eight drought types: Spatio-temporal characteristics and vegetation response

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 359, P. 121069 - 121069

Published: May 1, 2024

Language: Английский

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Assessing and predicting hydro-biogeochemical dynamics in the Weihe River basin in a shifting climate

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 133189 - 133189

Published: March 1, 2025

Language: Английский

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Widespread declining sensitivity of terrestrial gross primary productivity to compound dry-hot extremes in China

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 133387 - 133387

Published: April 1, 2025

Language: Английский

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Spatiotemporal variations and driving mechanisms of flash droughts during 1981–2020 in the Qilian Mountains, China

Journal of Arid Land, Journal Year: 2025, Volume and Issue: 17(4), P. 481 - 499

Published: April 1, 2025

Language: Английский

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