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The potential to reduce uncertainty in regional runoff projections from climate models The potential to reduce uncertainty in regional runoff projections from climate models

The potential to reduce uncertainty in regional runoff projections from climate models - PowerPoint Presentation

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Uploaded On 2020-10-22

The potential to reduce uncertainty in regional runoff projections from climate models - PPT Presentation

Flavio Lehner Andrew W Wood Julie A Vano David M Lawrence Martyn P Clark Justin S Mankin Nature Climate Change 9 926933 2019 doi101038s415580190639x APPROACH ID: 814937

change runoff observational climate runoff change climate observational uncertainty projections constraint precipitation future potential reduce models

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The potential to reduce uncertainty in regional runoff projections from climate models

Flavio Lehner

, Andrew W. Wood, Julie A. Vano, David M. Lawrence, Martyn P. Clark, Justin S. Mankin: Nature Climate Change, 9, 926–933 (2019) doi:10.1038/s41558-019-0639-x

APPROACH

We benchmark climate models with observational estimates of runoff sensitivity and derive an observational constraint on future runoff projections.

IMPACTThe observational constraint has the potential to greatly reduce uncertainty in future runoff projections, which will guide both model development as well as climate change adaptation in water-scarce regions.

OBJECTIVE

How will runoff change with climate change? Even if we knew how precipitation would change, we would still face uncertainty on how precipitation change translates into runoff changes (“runoff sensitivity”). Here we try to understand where the knowledge gap is and how it can be closed.