This technical paper aims to generate a knowledge base on slow onset events and on approaches to address loss and damage associated with the adverse effects of slow onset climate change events in developing countries that are particularly vulnerable to the adverse effects of climate change. The technical paper discusses slow onset events in the context of climate change, identifies and analyses approaches to addressing loss and damage associated with slow onset events and takes into consideration the outcomes of the three regional expert meetings (for Africa, Asia and Eastern Europe, and Latin America) and the expert meeting for small island developing States and draws some observations with regard to gaps, challenges and lessons learned