Complete implementation of time-varying reading with new temporal controller object #243
Description
Are there any linked Issues or Pull Requests?
Brief description
Tagging @christophermaynard @cjohnson-pi
A port of LFRic trac issue #4495
Further details of the issue.
The lfric_xios_time_axis object allows users to control time-varying data reads with XIOS, including enabling interpolation of incoming data to a finer temporal resolution. However, there are several downsides of the current iteration of this functionality, including:
- extremely inefficient reading (needing to read all data points at once for every read)
- a clunky API that is present in the algorithm level of many apps
- over-specification of some generic functionality relating to time
- a lack of connection between the object and it's related XIOS-based functionality
The ubiquity of this object across the apps makes it very difficult to refactor, so this ticket will implement a new version of the time axis object and integrate it with the lfric_xios_file_type. This will allow for incremental testing of the more advanced functionality and for inputs files to be gradually moved over to use the new functionality over time, rather than having a big-bang, linked-ticket change.