2011 - Cooperative Institute for Research in Environmental Sciences ...

Figure 3: Archive Retrieval Service architecture, May 23, 2011.
restrial Physics division. This program has been scheduled
to run nightly and picks up changes to the data files daily.
If desired, it can be run manually for immediate website
results. This information is available to customers online
through the Interface Database (IDB) web service.
Product: http://www.ngdc.noaa.gov/nndc/struts/resul
ts?t=102827&s=1&d=1001,1002,9
Milestone 4. Enhance the the Comprehensive Large Array
Stewardship System (CLASS) to meet NGDC archive requirements.
This involves working with scientific, contract and
federal teams to understand, document and define CLASS
capabilities for scientific data stewardship. This milestone
will result in a system that houses and manages NGDC data
using CLASS technology.
Three distinct types of services are required to support
NOAA data center operations. Data access for the
purpose of supporting outward-facing applications will
be supported by the NOAA Enterprise Archive Access
Tool (NEAAT). Data management will be supported by a
set of Data Management Tools (DMT). Data ingest will be
governed by Interface Control Documents (ICD), and supported
by both data center pre-ingest software and CLASS
ingest software. During the past year, CIRES staff have
supported progress in all three of these areas.
CIRES staff guide, test and review CLASS development
of NEAAT. The project has implemented a course-grained
form of data-discovery, inventory-inspection and data
ordering of CLASS data families. Requirements for more
effective fine-grained control in terms of individual offerings
have been completed.
CIRES staff have completed an initial report defining the
functional requirements for DMT. These tools will support
the ability to discover, examine and generate statistics;
report on archived holdings; and retrieve data for inwardfacing
applications, like archive verification.
CIRES staff supported writing of an ICD governing the
transfer of data from the NGDC to CLASS data ingest.
This document describes the nature of the data being
transferred, the operational protocols for doing so and
the division of ingest responsibilities between NGDC and
CLASS. The document is comprised of a generic base and
a CORS (Continuously Operating Reference Stations)
data set–specific appendix. Based on these requirements,
CIRES staff developed a pre-ingestor that feeds data to
a CLASS-maintained landing area. It is undergoing final
integration testing.
CIRES Annual Report 2011 87