Managing climate change risks in New York City’s water system: assessment and adaptation planning |
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Authors: | Cynthia Rosenzweig David C Major Kate Demong Christina Stanton Radley Horton Melissa Stults |
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Institution: | (1) NASA Goddard Institute of Space Studies, New York, USA;(2) Center for Climate Systems Research, Columbia University, Armstrong Hall, 5th Floor, 2880 Broadway, New York, NY 10025, USA;(3) NYC Department of Environmental Protection, Flushing, USA;(4) Present address: Natsource, Inc., New York, USA |
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Abstract: | Managing risk by adapting long-lived infrastructure to the effects of climate change must become a regular part of planning
for water supply, sewer, wastewater treatment, and other urban infrastructure during this century. The New York City Department
of Environmental Protection (NYCDEP), the agency responsible for managing New York City’s (NYC) water supply, sewer, and wastewater
treatment systems, has developed a climate risk management framework through its Climate Change Task Force, a government-university
collaborative effort. Its purpose is to ensure that NYCDEP’s strategic and capital planning take into account the potential
risks of climate change—sea-level rise, higher temperature, increases in extreme events, changes in drought and flood frequency
and intensity, and changing precipitation patterns—on NYC’s water systems. This approach will enable NYCDEP and other agencies
to incorporate adaptations to the risks of climate change into their management, investment, and policy decisions over the
long term as a regular part of their planning activities. The framework includes a 9-step Adaptation Assessment procedure.
Potential climate change adaptations are divided into management, infrastructure, and policy categories, and are assessed
by their relevance in terms of climate change time-frame (immediate, medium, and long term), the capital cycle, costs, and
other risks. The approach focuses on the water supply, sewer, and wastewater treatment systems of NYC, but has wide application
for other urban areas, especially those in coastal locations. |
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Keywords: | Adaptation to climate change Climate mitigation Risk management Sea-level rise Urban infrastructure Water quality Water supply Sewer systems Wastewater treatment |
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