Ocean_SST_Usecase 2

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Use Case #2 - IDENTIFY data sources

Version: 1.0

Summary:

In this use case the user finds and selects data sets that meet a set of search criteria. The search criteria are specified by the user.

• Input: Parameters associated with the target data set.
• Output: List of data sets ==> This list is the input to Use Case #3, in which a match-up data set is built.

• Data sets must be discoverable with GCMD, ADL or ...

• Must know certain critical aspects (metadata) about target data set-- such as spatial extent, temporal extent, spatial resolution and temporal resolution,

Triggers:

Basic course of events:

1. Provide data set search parameters: - spatial range
   - temporal range
   - spatial resolution
   - temporal resolution
   - type (climatology or time series)
   - source (model, in situ, satellite)
   - Access mechanism
2. Issue request to search engine(s).

1. Manually filter response to arrive at the desired data set list

4) Output this list.

Alternative paths

Postconditions

Business rules

Notes

Data sets may be remote Data sets may not be well described Data sets may be very large

Author and date - SST Use Case Development Group 25 July 2007.