Supercomputing for a Changing Climate: Modeling and Predicting Environmental Futures is a timely and practical guide to one of the most powerful tools in the fight against climate change. Supercomputers—capable of performing quadrillions of calculations per second—are enabling scientists to simulate Earth's climate with unprecedented detail, capturing everything from shifting ocean currents to the dynamics of extreme weather events like heatwaves and hurricanes.

Accurate climate projections are no longer a scientific luxury; they are essential for informed policymaking, resilient infrastructure, and effective disaster planning. Modern climate models, such as General Circulation Models (GCMs) and Earth System Models (ESMs), rely on high-performance computing (HPC) to achieve the resolution needed to reflect local impacts—something older, coarser models often miss. Increasingly, artificial intelligence and machine learning are being integrated to detect patterns in historical data, refine forecasts, and even update models in near real time.

While supercomputing is central to climate science, its applications span healthcare, energy, finance, and engineering—any field dealing with vast, complex datasets. In renewable energy, for example, HPC helps optimise power grids under changing weather conditions; in public health, it supports disease outbreak forecasting.

Yet supercomputing faces challenges. These systems consume significant energy, raising sustainability concerns. Issues around data integration, scalability, and cybersecurity also require ongoing attention. Future advances—such as hybrid quantum-classical computing—may one day unlock even deeper insights into non-linear environmental systems.

This book, is structured into four clear parts: an introduction to climate science and supercomputing; advanced computational techniques like parallel processing and uncertainty quantification; real-world applications in forecasting, impact assessment, and policy; and strategies for building climate resilience through mitigation and adaptation.

Designed for scientists, researchers, and policymakers, it balances technical depth with actionable insight. The book advocates for stronger collaboration across disciplines—using standardised data, secure cloud platforms, and energy-efficient hardware—to turn complex simulations into clear, evidence-based decisions.

Ultimately, supercomputing is more than a technological marvel; it is a vital instrument for understanding our planet and safeguarding its future. This guide empowers readers to harness its potential—not just to predict climate change, but to respond with wisdom, urgency, and purpose.