[Go-essp-tech] Are atomic datasets mutable?

[martin.juckes at stfc.ac.uk]

It sounds to me as though this is a new version of the dataset. 

 

Consider the case when someone uses an ensemble averaging tool, taking
all available data from a selection of atomic datasets. When additional
data is put into one of the atomic datasets, this will change the
result. In order to be able to go back and reproduce the earlier
version, the archive should be able to provide the atomic dataset in its
earlier state - i.e. an earlier version of the dataset.

 

I think it needs to be clear that this is an archive version, which
needs to change whenever the archived atomic dataset changes - it should
not get mixed up with model versions, or experiment versions. The sort
of version the Met Office want would probably sit in the METAFOR CIM,
describing the configuration used to create a stream of data.

 

Cheers,

Martin

 

From: go-essp-tech-bounces at ucar.edu
[mailto:go-essp-tech-bounces at ucar.edu] On Behalf Of
stephen.pascoe at stfc.ac.uk
Sent: 19 November 2009 11:56
To: go-essp-tech at ucar.edu
Subject: [Go-essp-tech] Are atomic datasets mutable?

 

Hi all,

 

The UKMO has flagged up a use case where an atomic dataset might change
over time without being a new version.  The example is the 1000 year
piControl run where UKMO is likely to deliver it in several time chunks
and would want it to be published before the full run is complete.
Since atomic datasets represent the whole time period these datasets
will grow over time.

 

I am tempted to say each addition to the dataset triggers a new version
that deprecates the previous one but UKMO wasn't too keen on that.  Any
ideas?

 

S.

 

---

Stephen Pascoe  +44 (0)1235 445980

British Atmospheric Data Centre

Rutherford Appleton Laboratory

 

 

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