A role for meta-analysis in hydrology

What is it about?

An Invited Commentary making the case for the role of meta-analytic methods in water resources studies

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Why is it important?

Knowledge is dispersed in water research literature, providing evidence for or against a particular hypothesis. How can we know to which side of the "pendulum" existing lines of evidence swing? We argue that quantitative synthesis (or meta-analysis) provides a way to measure the combined effects (weights or importance) of existing knowledge about a particular topic in hydrologic sciences.