The data from the using entity is stored in the extended data storage.

In one embodiment, an extended data storage system employs a first data storage and an extended data storage.

Thus, the data is stored in the extended data storage and a small amount of metadata is stored in the first data storage.

A second level of metadata at least describing the data as stored in the extended data storage is also established, wherein the second level of metadata associated with the first level of metadata for the stored data.

This expansive and sometimes unstructured pool of data is generally referred to as “big data”.

Optimisation relies on a comprehensive data base and complete rule systems.

Spatial Extent of representative area (data type Spatial Extent) (where available

Area of the exceedance situation (data type Spatial Extent

Area for modelling (data type Spatial Extent

Area for objective estimation (data type Spatial Extent

Zone delimitation (data type Spatial Extent

An extended layer decoding section (105) normally decodes the extended layer coded data.

The method then decodes the extended data array.

The data from the using entity is stored in the extended data storage.

An extended layer disappearance detection section (104) detects whether extended layer coded data has disappeared or not.