Fig. 5: Flow duration curve (FDC) slopes and GWM performance comparisons.
From: Distinct hydrologic response patterns and trends worldwide revealed by physics-embedded learning
a Cumulative distribution function (CDF) plots comparing δHBV2 with a widely-used operational global-scale product, GloFAS, on 5558 basins (ds2) as well as for prediction in ungauged basins (PUB) on 2509 basins not used in model training (ds1). b CDF plots for temporal test results from δHBV1.0, δHBV2, and long short-term memory (LSTM, a purely data-driven model) on 4746 gages (ds0). ds0-ds2 are different sets of basins for comparing models, as explained in the “Global datasets” section of the “Methods”. c Global distribution map of Flow Duration Curve slope between 1% and 33% exceedance flow (SFDC), used to indicate flashiness or the prevalence of sudden, heavy streamflows—a more negative slope indicates a high flashiness. d Global distribution map of the temporal change rate (slope) of SFDC.
