Changes between Version 2 and Version 3 of PDAF_diag_variance


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Timestamp:
Mar 21, 2025, 7:22:49 PM (11 days ago)
Author:
lnerger
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  • PDAF_diag_variance

    v2 v3  
    33This page documents the routine `PDAF_diag_variance` of PDAF, which was introduced with PDAF V3.0.
    44
    5 This routine computes the standard deviation of the ensemble and returns it in the form of a state vector. In addition the mean standard deviation is computed.  taking into account domain-decomposition for parallelized models.
     5This routine computes the unbiased variance of the ensemble and returns it in the form of a state vector. In addition the mean standard deviation is computed.  taking into account domain-decomposition for parallelized models.
    66
    77The routine can be called in the pre/poststep routine of PDAF both before and after the analysis step to compute the ensemble statistics. This variant computes the standard deviation for the provided ensemble over the full decomposed domain of a parallel model. The variant without parallelization is [wiki:PDAF_diag_variance_nompi].