Global Institute for Water Security
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The Global Institute for Water Security (GIWS) at the University of Saskatchewan is the top water resources research institute in Canada and one of the most advanced hydrology research centres in the world. GIWS is dedicated to helping protect our precious freshwater resources needed for the world’s growing demand for sustainable food production, mitigating the risk of water-related disasters such as floods, droughts, and fires, predicting and forecasting extremes of global change through the use of advanced remote sensing and modelling techniques, and co-creating traditional knowledge with western science to empower Indigenous communities in protecting water health.
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Browsing Global Institute for Water Security by Subject "Climate change"
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Item Drowning Commuter Trains : The journey from budding hydrologist to flood forecaster(Global Water Futures Integrated Modelling Program for Canada, 2023-03) Wijayarathne, Dayal BuddikaA young scientist's career choices are influenced by interactions with mentors, fellow students, and by exposure to societal impacts related to flooding.Item From Powder Turns to Snow-cloaked Trees : Learning from guides about snow accumulation in mountain forests(Global Water Futures Mountain Water Futures, 2023-03) Cebulski, AlexA young scientist learns about his research environment from local practitioners.Item Future-proofing B.C.'s highways : climate scientists and engineers building relationships(Global Water Futures Short‐Duration Extreme Precipitation in Future Climate, 2023-03) Zwiers, FrancisExperience of a Global Water Futures researcher in collaborating in climate research with practitioners.Item Humanity’s evolving story : sharing scientific research outcomes in a changing world(United Nations University Institute for Water, Environment and Health and Global Water Futures, 10/6/2022) Sandford, Robert WilliamNever before has how science tells its stories been more important. The story humanity has been telling itself about itself over the past two hundred years has proven to be dangerous to our future. Science has the power to change the path of that narrative and alter the next chapter of humanity’s story so that it is not our final chapter.Item Long period return level estimates of extreme precipitation(University of Victoria Pacific Climate Impacts Consortium, 2/27/2020) Zwiers, Francis; Ben Alaya, Mohamed Ali; Zhang, XuebinTo better use climate information available in the historical record, a recommended approach is composing precipitation as the product of precipitable water and precipitation efficiency.Item Long period return level estimates of extreme precipitation: abstract(National Research Council Canada, 2020) Zwiers, FrancisStatistical extreme value theory (EVT) is a fundamental tool for characterizing climate extremes and understanding whether they are changing over time. Most operational frequency and intensity estimates are obtained by using EVT to analyze time series of annual maxima; for example, of short duration precipitation accumulations or some aspect of wind speed. A key implicit assumption in the application of EVT is “max-stability”; i.e., that the statistical behaviour of annual maxima is predictive of maxima calculated over multi-decadal or longer intervals. This assumption cannot be tested using available observational records, and it is rarely discussed in studies of extremes. Here we use a recent large ensemble simulation to assess whether max-stability holds for annual maxima of extreme precipitation. We find that annual maxima tend not to be max-stable in the model-simulated climate. We explore the implications of the lack of max-stability on the estimation of very long period return levels, and discuss reasons why the annual maxima of precipitation extremes may not be max-stable. We also demonstrate a possible solution that is based on an alternative statistical approach and that incorporates additional process-based information into the analysis. While our study focuses on precipitation simulated by a regional climate model, our findings have serious implications for the estimation of high return levels of many climate and weather elements from models and observations that may potentially impact engineering practice.Item More than Cold Dirt : Discovering the human face of climate change research in northern Canada(Global Water Futures Geogenic Contamination of Groundwater Resources in Subarctic Regions, 2/1/2023) Skierszkan, Elliott K.Personal account of a researcher's experience learning from local people while investigating groundwater contamination related to thawing permafrost in Canada's Yukon Territory.Item Realising Global Water Futures: a Summary of Progress in Delivering Solutions to Water Threats in an Era of Global Change(Global Water Futures, 2023-02)Over the past six years the Global Water Futures program has produced a wide range of scientific findings and engagements with multiple types of potential users of the research. This briefing book provides a snapshot of some of the science advancements and user engagement that have taken place to date. Annual reports to the funding agency are the most up to date source of information: this compilation has been created from reports submitted by projects in 2022, representing both completed and current project work. The briefing book aims to provide quick access to information about GWF projects in a single place for GWF’s User Advisory Panel: we hope that knowing more about the research being produced will spark conversations about how to make the best use of the new knowledge in both policy and practice.Item A Team’s Journey into the Depths : Collecting deep groundwater samples in the American Southwest(Global Water Futures Groundwater, Climate Change and Water Security in the Canadian Prairies, 2023-03) Ferguson, GrantResearchers strengthen a collaborative working relationship through challenging fieldwork.