hydromt.stats.skills.nashsutcliffe#

hydromt.stats.skills.nashsutcliffe(sim, obs, dim='time')[source]#

Returns the Nash-Sutcliffe model efficiency based on a simulated and observed time series.

\[NSE = 1-\frac{\sum_{i=1}^{N}(sim_{i}-obs_{i})^2}{\sum_{i=1}^{N}(obs_{i}-\bar{obs})^2}\]
Parameters:

  • sim (xarray DataArray) – simulations time series

  • obs (xarray DataArray) – observations time series

  • dim (str, optional) – name of time dimension in sim and obs (the default is ‘time’)

Returns:

the Nash-Sutcliffe model efficiency

Return type:

xarray DataArray