Anthropogenic Drought: Definition, Challenges, and Opportunities

A. AghaKouchak, A. Mirchi, K. Madani, G. Di Baldassarre, A. Nazemi, A. Alborzi, H. Anjileli, M. Azarderakhsh, F. Chiang, E. Hassanzadeh, L.S. Huning, I. Mallakpour, A. Martinez, O. Mazdiyasni, H. Moftakhari, H. Norouzi, M. Sadegh, D. Sadeqi, A.F. Van Loon, N. Wanders

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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, and irrigation) due to natural variabilities that are out of the control of local decision-makers. Here, we argue that within coupled human-water systems, drought must be defined and understood as a process as opposed to a product to help better frame and describe the complex and interrelated dynamics of both natural and human-induced changes that define anthropogenic drought as a compound multidimensional and multiscale phenomenon, governed by the combination of natural water variability, climate change, human decisions and activities, and altered micro-climate conditions due to changes in land and water management. This definition considers the full spectrum of dynamic feedbacks and processes (e.g., land-atmosphere interactions and water and energy balance) within human-nature systems that drive the development of anthropogenic drought. This process magnifies the water supply demand gap and can lead to water bankruptcy, which will become more rampant around the globe in the coming decades due to continuously growing water demands under compounding effects of climate change and global environmental degradation. This challenge has de facto implications for both short-term and long-term water resources planning and management, water governance, and policymaking. Herein, after a brief overview of the anthropogenic drought concept and its examples, we discuss existing research gaps and opportunities for better understanding, modeling, and management of this phenomenon.
Original languageEnglish
Article numbere2019RG000683
Pages (from-to)1-23
Number of pages23
JournalReviews of Geophysics
Volume59
Issue number2
Early online date28 Jan 2021
DOIs
Publication statusPublished - Jun 2021

Funding

This study was partially supported by the National Oceanic and Atmospheric Administration grants NA19OAR4310294 and NA14OAR4310222, National Science Foundation grant CMMI‐1635797, and National Aeronautics and Space Administration grant NNX16AO56G. This paper was motivated by the discussions during the meetings of the International Association of Hydrological Sciences (IAHS) Panta Rhei Working Group on Drought in the Anthropocene during 2016–2018. This study was partially supported by the National Oceanic and Atmospheric Administration grants NA19OAR4310294 and NA14OAR4310222, National Science Foundation grant CMMI-1635797, and National Aeronautics and Space Administration grant NNX16AO56G. This paper was motivated by the discussions during the meetings of the International Association of Hydrological Sciences (IAHS) Panta Rhei Working Group on Drought in the Anthropocene during 2016–2018.

FundersFunder number
National Science FoundationCMMI‐1635797
National Aeronautics and Space AdministrationNNX16AO56G
National Oceanic and Atmospheric AdministrationNA14OAR4310222, NA19OAR4310294
International Association of Hydrological Sciences

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