The Workshop is addressed to researchers from developing regions working on hydro-climate modelling with the aim to foster international research and educational projects on topics related to climate and hydrology, and will be a contribution to the G-WADI programme within the framework of UNESCO IHP VIII (2014-2021), Water Security: Responses to Local Regional and Global Challenges.
GEWEX is the lead project for WCRP’s Grand Challenge on Water Availability, which focuses on how fresh water availability will shift due to climate change in many food producing regions of the world. Fresh water availability can vary over in time due to reductions or increases in precipitation, evapotranspiration, runoff, ground water recharge or discharge, and snow melt.
Climate extremes are one factor that can influence the intensity of precipitation in time, the snow melt timing and the exchange of water with land and, therefore, the storage of a region. All these make it imperative to better understand and predict precipitation variability and change.
To this aim, the climate model community and, in particular, the regional climate community from one end is moving toward very high resolution simulation ensemble efforts down to the scale of the convection permitting resolution (1-3 km); and from the other end is working to implement fully coupled Earth System models to be able to understand the role of coupled water cycle and land atmosphere interactions in understanding local climate response.
This will open new frontiers for the hydrological modeling community by bridging the spatial scale gap between regional climate models and impact models (hydrological models, ecosystem models, etc.); which will, in turn, affect the quality of the prediction of the hydrological cycle across several scales, from catchments to regional to global.
• Precipitation measurements: what we can use to validate precipitation coming from the model output?
• Ensemble of high resolution regional climate model outputs: how can those be used as input of a hydrological model?
• Regional Earth System models: which is the role of the coupled water cycle?
• Uncertainty in global and regional climate projections: how can this uncertainty be taken into account for hydro-climate simulation?