Joint UK Land Environment Simulator (JULES) model design

Tender description

<p>JULES is a community-based surface model that is used in weather and climate modelling to determine the exchange of energy, water and carbon between the surface and the atmosphere, as well as predicting the evolution of surface and sub-surface land states such as temperature and moisture. It is an essential model component across all time and spatial scales and includes critical processes such as the terrestrial water and carbon cycles. As the majority of weather and climate impacts occur on the land it is also a vital component to help understand extreme impacts and risks, providing information for weather and climate services on mitigation, adaptation and infrastructure planning. JULES can be run on its own (stand-alone) using an atmospheric forcing dataset or as part of an atmospheric model (coupled) which includes all of the land/atmosphere feedback. Currently a different technical solution is used for these two applications, which means that new scientific innovations that are often developed in the stand-alone system are not easy to implement within the coupled system, introducing a barrier to new scientific capabilities and understanding. This activity will seek to unlock the massive potential of the wider scientific community through the separation of concerns between the scientific understanding and development of the JULES code base, and the technical coupling and control level code required to run the science.</p> Keywords: Research, Strategic Priorities Fund, JULES, ExCALIBUR