Regional Initiative for the Assessment of Climate Change Impacts on Water Resources and Socio-Economic Vulnerability in the Arab Region (RICCAR) Regional Knowledge Hub (RKH) Data Portal The main objective of this FAO and ESCWA collaborative project is to establish the RKH Data Portal as an interactive, on-line platform that provides user-friendly, open access to data, geospatial information and analysis on climate change, water resources and vulnerability in the Arab region for informing climate change assessment, policy formulation, planning and decision-making.