Joint UK Land Environment Simulator (JULES)

JULES is a land surface model that simulates flows of energy, water, carbon and nitrogen between the land, atmosphere and soil. It operates at timescales from days to centuries and geographic scales from UK to global for a range of users: (1) Operational forecasters use JULES to predict weather-related hazards (eg floods, droughts); (2) IPCC and policy-makers use JULES to predict future climate change impacts; (3) Scientists use JULES to understand environmental processes and effects.