Climate change projections for precipitation and temperature are a crucial element for stakeholders to make well-informed decisions on adaptation to new climate conditions. In this frame, the Pyrenees constitute a paradigmatic example of mountains undergoing rapid changes in environmental conditions. The impact of the scenarios becomes significant for the second half of the 21st century.

A new regional climate modelling system, HCLIM38, is presented and shown to be applicable in different regions ranging from the tropics to the Arctic. The main focus is on climate simulations at horizontal resolutions between 1 and 4 km, the so-called convection-permitting scales, even though the model can also be used at coarser resolutions. The benefits of simulating climate at convection-permitting scales are shown and are particularly evident for climate extremes.

In the frame of MEDSCOPE project, a seasonal forecast empirical model for the Mediterranean is proposed. It uses a sub regions based set up, with different inputs for every area, from an initial set of global climate indices. However, is configurated to be able to easily incorporate other sources of information. Results show spatially consistent structure, and measurements of its skill shows it performs at the level (and better over some areas) of main dynamical models for seasonal forecasting.

We have described a methodology for ensemble member’s weighting of operational seasonal forecasting systems based on an enhanced prediction of a driver of climate variability strongly affecting certain climate variables (e.g. temperature, precipitation) over a certain region. We have applied it to the North Atlantic Oscillation influence on the Iberian Peninsula winter precipitation. This approach is fully general and consequently applicable to any other SFS providing a skilful NAO signal.

This is a web-based toolbox created to support decision-making process by water managers in Spanish reservoirs. It provides a set of tools to explore hydrologic variability linked to climate variability and a precipitation/reservoir inflow seasonal forecast over Spain.