Fig. 6: Seasonal decomposition of flood extent trends over a decade.
From: Mapping global floods with 10 years of satellite radar data
The y-axis represents flooded area (in hectares) per observation. The top panel shows the raw signal from the model after removing false positives. The subsequent panels decompose this signal into trend, seasonal, and residual components. The seasonal component indicates higher flooding during northern summer months. The trend component, after removing seasonal effects, suggests an increase in flooding over time. We note that this plot is for visualization purposes only, as we fit a linear model to the data when we estimate the trend, rather than simply looking at the trend component in this plot. However, this visualization aids in understanding the underlying patterns and trends in flood extent. Source data are provided as a Source Data file.
