ation is implemented so that covariance becomes zero outside of some localization radius. This prevents observation sites from updating distant state vector elements outside of the radius. Covariance localization is implemented after inflation, but before blending.</p>
<p>The first input provides the localization weights between the state vector rows and observation sites. It should be a 3D array with one row per state vector element, and one column per observation site. The second input is the localization