Changes between Version 40 and Version 41 of Lorenz_96_model

Timestamp:

Feb 22, 2023, 3:59:40 PM (21 months ago)

Author:

lnerger

Comment:

--

Lorenz_96_model

@@ -187 +187 @@
 || use_obs_mask || whether to use incomplete observations (need to be .true. for any other settings on the observation density to be used) || .false. ||
 
-For the full set of options, please see init_pdaf.F90 in the lorenz96 directory. There, also the possible settings e.g. for `filtertype` or `locweight` are described.
-
-
+
+The localization is controlled by the variables `locweight`, `cradius`, nD `sradius`:
+
+||= '''locweight''' =||= '''0''' =||= '''1''' =||= '''2''' =||= '''3''' =||= '''4''' =||
+||= function =|| unit weight ||  exponential  ||||||||  5-th order polynomial  ||
+||= regulation =||  -  ||  -  ||  -  ||  regulation using[[BR]]mean variance  ||  regulation using variance[[BR]]of single observation point  ||
+||= '''cradius''' =||||||||||||  weight=0 if distance > cradius  ||
+||= '''sradius''' =||  no impact  ||  weight = exp(-d / sradius)  ||||||||  weight = 0 if d >= sradius[[BR]] else[[BR]] weight = f(sradius, distance)  ||
+
+Here, 'regulation' refers to the regulated localization introduced in Nerger, L., Janjić, T., Schröter, J., Hiller, W. (2012). A regulated localization scheme for ensemble-based Kalman filters. Quarterly Journal of the Royal Meteorological Society, 138, 802-812. ​[https://doi.org/10.1002/qj.945 doi:10.1002/qj.945].
+
+For the full set of options, please see init_pdaf.F90 in the lorenz96 directory. There, also the possible settings e.g. for `filtertype` are described.
+
+