Hydrology in the 21st century : challenges in science, to policy and practice

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Fowler, Hayley J. and Coxon, Gemma and White, Christopher J. (2025) Hydrology in the 21st century : challenges in science, to policy and practice. Proceedings A: Mathematical, Physical and Engineering Sciences, 383 (2302). 20240299. ISSN 1471-2962 (https://doi.org/10.1098/rsta.2024.0299)

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Abstract

To mark the 40th anniversary of the British Hydrological Society, a landmark Discussion Meeting was held at the Royal Society in June 2024, bringing together a transdisciplinary community, including hydrologists, policymakers and practitioners, to reflect on four decades of progress and chart future directions for hydrology. This special issue presents a collection of papers from that meeting, addressing advances in data, modelling, forecasting and decision-making in the context of intensifying climate and hydrological extremes. Key themes include the need for open, reproducible science, greater integration of machine learning, AI and convection-permitting models and a shift towards transdisciplinary, co-produced knowledge that better supports adaptation, resilience and policy impact. The issue highlights the critical roles of education, collaboration and equity in shaping a hydrology that is not only technically advanced but socially and environmentally responsive to the challenges of the 21st century. This article is part of the discussion meeting issue ‘Hydrology in the 21st century: challenges in science, to policy and practice’.

ORCID iDs

Fowler, Hayley J., Coxon, Gemma and White, Christopher J. ORCID logoORCID: https://orcid.org/0000-0003-1791-4784;
CORE (COnnecting REpositories)