Changes between Version 12 and Version 13 of 2017UpdateNEMOStrategy/FirstSteps

Timestamp:

2016-11-25T13:03:38+01:00 (8 years ago)

Author:

acc

Comment:

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2017UpdateNEMOStrategy/FirstSteps

@@ -77 +77 @@
 
 == Chapter 11 - NEMO validation and range of user support (including user   interface to build configurations, and Configuration Manager) - Andrew Coward ==
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+* A clean-up of the configuration set-up routines in NEMO is seen as an essential simplification. This has been started in 2016 and will continue. This process puts greater responsibility on a configuration developer to provide either external input files or user-defined code modules. The system team will endeavour to provide sufficient examples and tools to ease this burden. The benefits are a simpler code kernel which is more suitable for adaptation to future architectures and, ultimately, a less error-prone route to setting up new configurations. Examples and methods need to be well documented and these guides need to be readily available to ease the transition.
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+* The new interface eases the task of providing simple test cases and the range of such options is expected to grow rapidly. Test cases should be viewed separately to reference configurations but they are useful for demonstrating and comparing numerical schemes; especially when analytical solutions exist for comparison.
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+* XIOS-2 should be adopted as default but this still lacks documentation targeted towards NEMO users. The system team should consider compiling an 'XIOS in NEMO' guide detailing relevant settings and tricks for obtaining some of the more complex outputs. Mostly this is a case of documenting the work done to obtain CMIP6 diagnostics.
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+* A basic but well-tested Configuration Manager (SIREN) is now part of the system. These tools allow a regional sub-model of any ORCA grid to be set up easily. Users will expect such tools for setting up regional models with open boundaries (BDY) and for AGRIF nests; ideally the same tool should be used for both. The UK has made some progress with Python-based tools for constructing regional sub-models from any gridded input. This effort has currently stalled but  is expected to restart next year. The aim should remain to provide a single set of tools for regional model configuration.