30 September 2021
The development of the profiles involved a wide range of scientific experts from: The role of the TWG was to develop technical recommenda- • United Nations agencies and scientific networks tions on the scope and definitions of hazards related to the Sendai Framework. [...] Recommendation 1: Regular review and update The development and regular review and updating of a standard set of classifications of hazards, and the development of an agreed process of identifying and defining hazards is a critical foundation for risk-based decision-making and action. [...] The height of the waves exceeds the height of the barrier and water flows over the top of the barrier to flood the land behind it. [...] Metrics and numeric limits The extent and magnitude of coastal flooding is a function of the elevation inland flood waters penetrate, which is controlled by the topography of the coastal land exposed to flooding; storm surge conditions; and the broader bathymetry of the coastal area (Bell et al., 2017). [...] Examples of drivers, outcomes and risk management Drivers of flash flood: The intensity of the rainfall, the location and distribution of the rainfall, the land use and topography, vegetation types and growth/density, soil type, and soil water-content all determine how quickly flash flooding may occur, and influence where it may occur (NOAA, no date b).