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Indicators of climate change impacts on the water cycle and water management

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Abstract

Managing water is a top social and economic responsibility and is expected to become even more critical as climate change, in addition to other human activities, alters water availability and quality. Robust indicators reflecting the effects of climate change on the US and global water cycles are needed in order to appropriately manage water resources. Here, we describe a suite of seventeen water cycle and management indicators, which are based on synthesis of available datasets. These indicators include average and heavy precipitation, standardized precipitation index, annual, 7-day low and 3-day high streamflow volume, streamflow timing, snow cover, snow water equivalent, groundwater level, lake water temperature, stream water temperature, dissolved oxygen, salinity, Palmer Drought Severity Index, water withdrawals, and water use. We also identify three indicators that could be included in the suite of water cycle and management indicators with some additional, directed work: snowfall, evapotranspiration, and soil moisture. Our conceptual framework focuses on known water cycle changes in addition to potential effects on management and addresses water quantity and quality, as well as water use and related interactions with freshwater ecosystems, societal impacts, and management. Water cycle indicators are organized into three categories: (1) hydrologic processes, (2) water quality processes, and (3) water quality and quantity impacts. Indicators described here are recommended to serve as critical references for periodic climate assessments. As such, these indicators support analyses of the effects of global change on the natural environment, agriculture, energy, and water resources, among other sectors. Additionally, we identify research gaps and needs that can be addressed to advance the development of future indicators.

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Acknowledgements

The authors acknowledge the support provided by A.C. Janetos, chair of the Indicator Work Group under the National Climate Assessment and Development Advisory Committee (NCADAC), and M.A. Kenney, director of the Indicator Research Team. Kenney’s research team provided research and coordination support to the technical team, which was supported by National Oceanic and Atmospheric Administration grant NA09NES4400006 and NA14NES4320003 (Cooperative Climate and Satellites-CICS) at the University of Maryland/ESSIC. Members of the Indicators Technical Teams, NCADAC Indicators Working Group, and Kenney’s Indicator research team are included in Kenney et al. (2016). C.P-L. acknowledges support from NASA. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

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All authors were supported by their respective agencies/institutions.

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All authors contributed to the study conception and design. The first draft of the manuscript was written collaboratively by all authors, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Christa D. Peters-Lidard.

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The authors declare no competing interests.

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This article is part of a topical collection on “National Indicators of Climate Changes, Impacts, and Vulnerability” edited by Anthony C. Janetos and Melissa A. Kenney

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Peters-Lidard, C.D., Rose, K.C., Kiang, J.E. et al. Indicators of climate change impacts on the water cycle and water management. Climatic Change 165, 36 (2021). https://doi.org/10.1007/s10584-021-03057-5

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  • DOI: https://doi.org/10.1007/s10584-021-03057-5

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