BES Aggregation using NcML

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There are three main scenarios for aggregation that we have encountered so far in addition to the simple situation where a group of otherwise discreet variables are combined in a Structure to be manipulated as a single variable. Those cases are tiling, combination of parameters held in separate files and grouping M N-dimensional variables into a single N+1-dimensional variable. A fourth form of aggregation which has emerged is 'tiling in time.' That is, it is essentially tiling but it is useful to separate tiling in the abstract sense from two common cases: tiling over latitude and longitude and tiling over time. Both latitude and longitude are periodic, so tiling needs to take this into account. Time, on the other hand, is generally not periodic (although climatologies could be stored in separate files and tiled along their time dimension).

Increasing dimensionality

Tiling

Combining parameters

Use Cases

Definitions

Background

Deliverables

Period of use