Anthropogenic Drought: Definition, Challenges, and Opportunities

Reviews of Geophysics, Journal Year: 2021, Volume and Issue: 59(2)

Published: Jan. 28, 2021

Abstract Traditional, mainstream definitions of drought describe it as deficit in water‐related variables or water‐dependent activities (e.g., precipitation, soil moisture, surface and groundwater storage, irrigation) due to natural variabilities that are out the control local decision‐makers. Here, we argue within coupled human‐water systems, must be defined understood a process opposed product help better frame complex interrelated dynamics both human‐induced changes define anthropogenic compound multidimensional multiscale phenomenon, governed by combination water variability, climate change, human decisions activities, altered micro‐climate conditions land management. This definition considers full spectrum dynamic feedbacks processes land‐atmosphere interactions energy balance) human‐nature systems drive development . magnifies supply demand gap can lead bankruptcy, which will become more rampant around globe coming decades continuously growing demands under compounding effects change global environmental degradation. challenge has de facto implications for short‐term long‐term resources planning management, governance, policymaking. Herein, after brief overview concept its examples, discuss existing research gaps opportunities understanding, modeling, management this phenomenon.

Language: Английский

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Multihazard Scenarios for Analysis of Compound Extreme Events

Geophysical Research Letters, Journal Year: 2018, Volume and Issue: 45(11), P. 5470 - 5480

Published: May 11, 2018

Abstract Compound extremes correspond to events with multiple concurrent or consecutive drivers (e.g., ocean and fluvial flooding, drought, heat waves) leading substantial impacts such as infrastructure failure. In many risk assessment design applications, however, multihazard scenarios of compound are ignored. this paper, we review the existing multivariate hazard scenario concepts introduce a novel copula‐based weighted average threshold for an expected event drivers. The model can be used obtaining their corresponding likelihoods. proposed offers uncertainty ranges most likely hazards using Bayesian inference. We show that quantiles might large may differ significantly from one copula other. also demonstrate choice marginal functions profoundly impact values. A robust analysis should account these uncertainties within between models translate into quantiles.

Language: Английский

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Increase in Compound Drought and Heatwaves in a Warming World

Geophysical Research Letters, Journal Year: 2020, Volume and Issue: 48(1)

Published: Dec. 10, 2020

Abstract Compound drought and heatwaves can cause significant damage to the environment, economy, society. In this study, we quantify spatio‐temporal changes in compound heatwave (CDHW) events by integrating weekly self‐calibrated Palmer Drought Severity Index (sc_PDSI) daily maximum temperatures during period 1983 2016. Multiple data products are used examine robustness of sc_PDSI event analysis. The results consistently suggest increases drought‐related affected global land area recent (warmer) periods. Several regions across globe witnessed rise CDHW frequency (one three events/year), duration (2–10 days/year), severity. This increasing pattern is spatially asymmetric, greater amplification observed Northern hemisphere due warming. Furthermore, background aridity influences spatiotemporal evolution events. be applied minimize impacts extreme CDHWs critical geographical regions.

Language: Английский

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Plant responses to multifactorial stress combination

New Phytologist, Journal Year: 2022, Volume and Issue: 234(4), P. 1161 - 1167

Published: March 12, 2022

Summary Human activity is causing a global change in plant environment that includes significant increase the number and intensity of different stress factors. These include combinations multiple abiotic biotic stressors simultaneously or sequentially impact plants microbiomes, decrease growth, yield overall health. It was recently found with increasing complexity impacting plant, growth survival decline dramatically, even if level each individual stress, involved such ‘multifactorial combination’, low enough not to have effect. Here we highlight this new concept multifactorial combination discuss its importance for our efforts develop climate change‐resilient crops.

Language: Английский

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Beating the urban heat: Situation, background, impacts and the way forward in China

Renewable and Sustainable Energy Reviews, Journal Year: 2022, Volume and Issue: 161, P. 112350 - 112350

Published: March 10, 2022

Language: Английский

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