Editing Flooded area extent (section)

== Aggregation Semantics ==
Geographic aggregation of flooded area extent involves summing the inundated land surface over defined spatial units such as river basins, administrative regions, or global grids to assess flood impact at various scales. Temporal aggregation is event-based, capturing the maximum or cumulative flooded extent during discrete flood episodes rather than continuous time series. Cross-signal aggregation may integrate flooded area extent with related environmental signals such as precipitation intensity, river discharge, and sea level to understand causal relationships and compound effects. Aggregated data support comparative analysis across regions and time periods to identify trends and vulnerabilities in flood exposure.