9. DATA MANAGEMENT AND AVAILABILITY
9.1.
EXPECTED DATA SETS
9.2. DATA MANAGEMENT
9.2.1.
Near-term Data Management
9.2.2.
Long-term Data Management
9.3.
DOCUMENTATION
9.3.1.
Data Set Documentation
9.3.2.
Instrument Description
9.3.3.
Platform Description
9.3.4.
Project Documentation
9. DATA MANAGEMENT AND AVAILABILITY
The
National Snow and Ice Data Center (NSIDC)
, located
at the University of Colorado in Boulder, will be the primary facility
for CLPX data management and archive. This NASA Distributed Active Archive
Center (DAAC), part of the NASA Earth Observing System Data and Information
System (EOSDIS) is the principal EOSDIS facility for archival of data sets
related to cryospheric research. The NSIDC DAAC facility is fully capable
of providing the management, archive, and distribution services for data
collected during the experiment.
All primary data sets collected during the experiment will be managed by NSIDC. Ancillary data sets that are readily available from other sources will not be stored by NSIDC. Instead, NSIDC will provide information about and links to these data sets. The major data sets expected to be managed at NSIDC are:
NSIDC will provide data management services for the Cold Land Processes (CLP) Field Experiment. This will include data ingest and verification, minor data processing, the development of a data order interface, development of comprehensive data documentation, restricted data distribution to the CLP investigators, and eventually long term archival and public distribution of the data. Specifically, NSIDC will work closely with the investigators in the field to ingest and verify all the in situ data collected during each of the four IOPs. This data will be made available to all the CLP investigators in near real time. Public access to these data will be restricted for one year. NSIDC will ingest and publish the ground-based and airborne remote sensing data after investigators have completed the processing of the low level data. Finally, NSIDC will collect a comprehensive suite of relevant satellite remote sensing data subsetted to the CLP study region. NSIDC will work closely with the CLP investigators to fully document all the data and make it available to the public as a comprehensive package through a web-based interface. Long term archival of the data will be arranged through the NSIDC DAAC long term archival plan.
NSIDC staff will begin working with CLPX coordinators
prior to the experiment (Summer, 2001) to set up the management and archive
system for this experiment. Data management activities will begin immediately
following the collection of the first background data set in the Fall of
2001. Data management will fall into two broad categories: 1) near-term
(during and immediately following the experiment), and 2) long-term.
9.2.1. Near-term Data Management
NSIDC will work closely with the CLPX to provide a near-term data management environment that will facilitate the objectives of the experiment and ensure that data are preserved. The near-term data management policy for CLPX is clear: All ground and airborne data sets collected in the field will be sent to NSIDC immediately following the data collection period. For electronic files such as remote sensing and micrometeorological data sets, this will simply provide a backup copy of the data. For manually recorded data such as snow and soil measurements, this will serve as a central facility for safekeeping of all original copies of all data records.
Field books containing manually recorded data will be brought to NSIDC by the data management coordinator following each data collection period, after photocopies have been made and provided to other coordinators (see Section 8.9 for field management of data sets). Electronic versions of these records, recorded each evening during the IOPs, will be also be provided to NSIDC following the IOPs. These files will be made available to CLPX participants shortly after the experiment via the web or CD-ROM.
All data stored collected as part of the CLPX and stored
by NSIDC will become public domain data after a reasonable embargo period
to permit quality control and preliminary analysis by CLPX participants.
This period is expected to be between 12 and 24 months, depending on the
data set.
9.2.2. Long-term Data Management
All data sets collected as part of the CLPX will be available to the public via the NSIDC web site. Some of the data sets may actually be stored at locations other than NSIDC, but will be linked to the NSIDC web site. The long-term management will focus on data products of greatest interest to the scientific community. Original "raw" data initially stored at NSIDC may or may not remain available for the long-term, depending on the nature of the data set.
In addition to the NSIDC web site, some data sets will
also be distributed via CD-ROM as appropriate. Organization and contents
of CD-ROMS will be planned prior to the experiment but not finally determined
until after the experiment is completed.
An important part of NSIDC's role in CLPX will be to provide
documentation for each of the data sets produced. NSIDC will work closely
with CLPX participants to produce this documentation, which will be available
via the NSIDC web site. The documentation will describe the data set, the
instruments used, the platform used, and the overall project:
1. Platform
or Data Collection Environment Information
- Platform Mission Objectives
- Program Management
- Platform Parameters
- Coverage Information
- Attitude Characteristics
- Data Collection System
- Communication Links
2. Platform
Ground Segment Information
- Tracking and Control
- Data Acquisition and Processing
1. Project
Overview
- Name of Project
- Project Mission Objectives
- Disciplines
- Geographic Region
- Detailed Project Description
2. Data Availability
- Data Type
- Input/Output Media
- Proprietary Status
3. Data Access
4. Principal
Investigator Information
5. Submitting
Investigator Information
6. References
7. Glossary
of Terms
8. List of
Acronyms
9. Document
Information