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Critical to our ability to survive and thrive for generations to come is ongoing access to adequate supplies of clean, fresh water. For the foreseeable future, significant freshwater withdrawals will be needed for irrigation, thermal power plant cooling, and myriad industrial and residential uses. But in many regions, socioeconomic and environmental pressures pose growing threats to both the quantity and quality of local water resources. In order to take effective action to mitigate and/or adapt to rising risks, decision-makers will need robust, prediction-based strategies and tools.

The MIT Flood Vulnerability Study is one key part of a broader initiative led by the MIT Climate Resiliency Committee and the MIT Office of Sustainability to understand and recommend how MIT can continue to fulfill its mission in the face of intensifying climate risks over the next 100 years and beyond. Risks include precipitation flooding, sea level rise/storm surge and chronic heat stress. This study seeks to translate the science of campus-based flooding risk from climate change into operational and strategic guidance for informing campus planning and management.

Inspired by the MIT Plan for Action on Climate Change, one key research and academic objective of this study is to utilize the MIT campus as a test bed for climate innovation. The study engages MIT’s global research expertise in downscaling global MIT climate models for application testing on the MIT campus, as well as expertise and tools advancing the MIT Stormwater Management and Landscape Ecology Plan.

This Joint Program Report presents findings for Flood and Vulnerability Study Phase 1A – Evaluation of Precipitation Probabilities and Preliminary Campus Flood Risks. The primary purpose of Phase 1A is to quantify MIT Cambridge campus flood risks under current and future climate change conditions over a range of probabilities. Findings include predicted precipitation probabilities, campus flooding exposure from precipitation based on current and future climate conditions, campus flooding exposure from sea level rise and storm surges, and results from the testing of one potential flood mitigation solution. The co-authors conclude the report by outlining planning recommendations and next steps.

The MIT Integrated Global System Modeling (IGSM) framework is designed for analyzing the global environmental changes that may result from anthropogenic causes, quantifying the uncertainties associated with the projected changes, and assessing the costs and environmental effectiveness of proposed policies to mitigate climate risk. The IGSM consists of the MIT Earth System Model of intermediate complexity (MESM) and the Economic Projections and Policy Analysis (EPPA) model. This paper documents the current version of the MESM, which includes a two-dimensional (zonally averaged) atmospheric model with interactive chemistry coupled to the Global Land System (GLS) model and an anomaly-diffusing ocean model. 

 

Amid much uncertainty about the future of the global climate and efforts aimed at preventing its most damaging impacts, graduate students affiliated with the MIT Joint Program on the Science and Policy of Global Change are hard at work exploring some of the challenges and possible solutions that lie ahead. They are also sharing their knowledge with the MIT community.

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