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.

$N S E = 1 - \frac{\sum_{i = 1}^{N} (s i m_{i} - o b s_{i})^{2}}{\sum_{i = 1}^{N} (o b s_{i} - \bar{o b s})^{2}}$

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