- the effect of non-Gaussian error statistics. - NCEO - National Centre ...

Non-Gaussian errors•Unfortunately error distributions are not always accurately described by a Gaussian.•This is becoming a particular issue as geophysical models resolve more non-linearprocesses and the observations become more complicated.Non-linear mape.g. non-linear dynamical model ornon-linear observation operatorContours ofa 2D pdf•Not accounting for the non-Gaussian structures in the error distributions could have adetrimental impact on the data assimilation.•This has lead to intense research effort in developing non-Gaussian data assimilationtechniques which can be applied to the geosciences. For example particle filtertechniques developed in NCEO.5