NEDAS.assim_tools.localization.distance_based module

NEDAS.assim_tools.localization.distance_based.gaspari_cohn_func(dist, roi)

Gaspari-Cohn localization function.

Parameters:

• dist (np.ndarray) – Distance between observation and state (being updated)

• roi (float or np.ndarray) – The radius of influence, distance beyond which local_factor is tapered to 0

Returns:

The localization factor, same shape as dist

Return type:

np.ndarray

NEDAS.assim_tools.localization.distance_based.step_func(dist, roi)

Step function for localization.

NEDAS.assim_tools.localization.distance_based.exponential_func(dist, roi)

Exponential decay localization function.