Transcript a forward look

State-of-the-art tools and
practices for marine data and
information management –
a forward look
Lesley Rickards
British Oceanographic Data Centre (BODC)
Chair, International Oceanographic Data and
Information Exchange (IODE) Committee
MAMA MD&IM Workshop - 28 January 2004
What are we aiming for?
• Simple access to all types of marine data (and
information) on an appropriate time scale
• A virtual or distributed data centre
• Data available on CD-ROM/DVD
• End to end data management
Where are we now?
• A collection of separate centres with a wide
variety of remits, skills and data
• Made up of NODCs, RNODCs and WDCs
• Sometimes work together in groups for
individual projects
MAMA MD&IM Workshop - 28 January 2004
MAMA MD&IM Workshop - 28 January 2004
Data Management and Communication System
for the coastal module of GOOS
MAMA MD&IM Workshop - 28 January 2004
Data management practices:
• ‘Best’ rather than ‘state of the art’
• Compliance with IOC Data Exchange
Policy
• Proper collaborative efforts, building on
existing standards and practices – not
reinventing the wheel each time a new
project comes along
• Cooperation – partnership – collaboration
MAMA MD&IM Workshop - 28 January 2004
Timely, efficient and open access to the best
possible data, metadata & associated products
• Metadata Standards
• Discovery
• Accompanying data (position, date/time, etc)
• Data Documentation (qc history)
• Quality Control
• Automatic tests
• ‘Scientific’, delayed-mode
• Data dissemination
• CD-ROM/DVD
• On-line access
• Long term stewardship of data
MAMA MD&IM Workshop - 28 January 2004
Data management tools - METADATA
• Metadata is all the descriptive information necessary to allow
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users to find (discover), access, manipulate, process (request)
and extract (recover) data, information and products
Standards
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ISO19115
Dublin Core
MEDI, GCMD, EDMED, FGDC, ANZLIC, (EDIOS), (CSR), etc, etc.
Mappings between standards available (cross-walks)
** Compliance with ISO19115 **
Various controlled vocabularies
Links with XML (schemas/DTDs)
MEDI Authoring Tool
All have search tools
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geospatial location, temporal information, keywords, controlled
vocabulary items, “free text”
MAMA MD&IM Workshop - 28 January 2004
eXtensible Markup Language (XML)
• XML is being widely used as a basis for both
dynamic web page development and more generally
as a data exchange mechanism
• Data exchange aspects of XML include the ability to
define flexible data structures that utilise the
terminology of the subject area
• Data to be exchanged is packaged in a form more
intuitive to the user.
• Extensive availability of free software for
manipulation and transformation of the XML data
stream
• Allows developers to easily develop, populate,
exchange and transform data streams.
MAMA MD&IM Workshop - 28 January 2004
MarineXML
EU MarineXML
“… demonstrate how XML technology can be used to develop a
framework that improves the interoperability of data for the
marine community and specifically in support of marine
observing systems. The project will develop a prototype of an
XML-based Marine Mark-up Language (MML).”
ICES-IOC SGXML
“… utilize or establish international standards to promote the
seamless exchange of data from distributed data sources, by
using a single parameter dictionary, well-defined and explicitly
tagged metadata, and a common XML data structure, packaging
all content and providing to the client datasets and software
tools that are platform independent or web enabled”
MAMA MD&IM Workshop - 28 January 2004
Quality Control
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(Real-time) automatic tests (but do not rely on them)
Quality flags
Data visualisation tools
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to include comparison with other data collected in the same place or
nearby, climatology; different ways of looking at the same data
• Ocean Data View
• Ncbrowse (for netCDF files)
• EPIC (management, display and analysis of oceanographic and
meteorological data)
• Sea Level data
• POL TASK2000 package + on-line tidal analysis
• University of Hawaii JASL software
• ESEAS – working towards new package
• Document QC (e.g. audit trail, data history)
• Use existing standards/guidelines where available
• ICES data type guidelines, WOCE standards
MAMA MD&IM Workshop - 28 January 2004
Ocean Data View (ODV)
• Interactive exploration and graphical display
of oceanographic and other geo-referenced
profile, sequence or gridded data
• Runs on Windows (9x/NT/2000/XP), Linux,
UNIX, and Mac OS X
• Data collection and configuration files are
platform independent
• Interactive browse through large sets of
station data
MAMA MD&IM Workshop - 28 January 2004
Ocean Data View (ODV)
• High-quality station-maps, general propertyproperty plots of one or more stations, scatter
plots of selected stations, property sections
along arbitrary cruise tracks and property
distributions on general iso-surfaces
• Display of original scalar and vector data by
coloured dots, numerical data values or arrows
• Fast gridding algorithms allow colour shading
and contouring of gridded fields along sections
and on iso-surfaces
• Derived quantities calculated dynamically,
displayed and analysed
MAMA MD&IM Workshop - 28 January 2004
MAMA MD&IM Workshop - 28 January 2004
Development of distributed systems
OPeNDAP (DODS)
• Data servers for making local data accessible at
remote locations
• Free software for download
Live Active Server (LAS)
• Best for large, gridded environmental data sets
• Dynamically generated graphics
• Compare variables from distributed locations (using
DODS)
Thematic Real-time Environmental Data Distributed
Services (THREDDS)
• Access to large collection of real-time and archived
data sets from a variety of data sources
• Analysis and display software
MAMA MD&IM Workshop - 28 January 2004
Other examples of distributed systems
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US GLOBEC (US JGOFS)
NOAA Coastal Directory
Russian ESIMO
NERC Data Grid
IFREMER/SISMER Data Portal
SeaSearch Common Data Index
Distributed Generic Information Retrieval
(DiGIR) – protocol for retrieving structured
information from multiple heterogeneous
databases
• etc.
MAMA MD&IM Workshop - 28 January 2004
SISMER Web Portal
NOW:
SISMER WEB
interface
SISMER
Server Database
« Datasets
catalogues »
SISMER
Server
Database
« Data sets
catalogues »
WEB interface i
Thematic
database i
Thematic
database 1
Thematic
database 2
SISMER
WEB portal
FUTURE:
SISMER
Web Portal
WEB interface 1
WEB interface 2
XML / ISO 19115
integrator 1
Thematic
database 1
Automatic querying
of existing systems
XML / ISO 19115
integrator 2
Thematic
database 2
XML / ISO 19115
integrator i
Thematic
database i
MAMA MD&IM Workshop - 28 January 2004
ARGO STATUS
(Jan 27, 2004)
1037 Active Floats
Target:
3000 floats by 2006
MAMA MD&IM Workshop - 28 January 2004
Argo Data Management
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Data transmitted in real-time by satellite
Transferred to data centres
Messages decoded
Automatic real-time quality control tests
Data passed to global centres (GDACs) for
dissemination
• Delayed-mode quality control and calibration
• Replacement version sent to GDACs
• Regional centres for further quality control
and products
MAMA MD&IM Workshop - 28 January 2004
Location of Argo
float profiles
01 – 27 Jan2004
No. of profiles:
2139
Data available
for download:
Profiles
Trajectory
Metadata
Technical info
From:
• US GODAE
• CORIOLIS
MAMA MD&IM Workshop - 28 January 2004
Ocean Biogeographic Information System (OBIS)
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Web-based provider
Global geo-referenced information
Accurately identified marine species
Expert species level and habitat level
databases
• Variety of spatial query tools for visualizing
relationships among species and their
environment.
• Strives to assess and integrate biological,
physical, and chemical oceanographic data
from multiple sources.
• Users, including researchers, students, and
environmental managers, gain a dynamic
view of the multi-dimensional oceanic
world
Part of the Census of Marine Life (CoML)
MAMA MD&IM Workshop - 28 January 2004
Gulf of Maine Biogeographic Information System
(GMBIS)
• Regional implementation for CoML
• Partner with OBIS
• Integrated into the Gulf of Maine Ocean
Observing System (GoMOOS)
• Designed to assimilate and integrate marine
ecosystem and fisheries data, as well as
natural-history information
• Included is an advanced oceanographic
geographic information system (GIS)
MAMA MD&IM Workshop - 28 January 2004
Gulf of Maine Biogeographic Information System
(GMBIS)
• Access to biological, physical, chemical and geological
data and information
• Enhance understanding of biological patterns and their
changes through time
• “Aggregation server” providing access, rapid
visualization and data download capabilities
• Server will rely on a combination of archived (local
access) data as well as dynamic access to remote data
providers
• Visualisation and other interactive software will be
designed to help the user evaluate what data are
available, combine data layers and download data
MAMA MD&IM Workshop - 28 January 2004
Gulf of Maine Biogeographic Information System (GMBIS)
Access to:
• historical data
• taxonomic collections
• geological base maps
• modern remote sensing data
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(buoys, CODAR, satellite)
modelling products
broad-scale survey data (e.g.
living marine resources)
other monitoring programs
(e.g. COASTWATCH,
Continuous Plankton
Recorder)
MAMA MD&IM Workshop - 28 January 2004
GMBIS uses Environmental Analysis System (EASy)
• Storage, dissemination, analysis, integration, and dynamic
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display of spatially referenced series of oceanographic data
PC-based
Aids interfacing of multivariate oceanographic data
Both data and model outputs can be imaged in time through
diverse kinds of displays
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Including vector, contour, and false-colour imagery
• Vertical structures can be depicted along line transects or point•
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sampling stations
Time series can also be visualised
Patterns in the spatial distribution or organisms to be visualized
and compared to other spatial distributions
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Including both biological and other oceanographic variables
Even when characterised by different scales of sampling and
different degrees of resolution
MAMA MD&IM Workshop - 28 January 2004
CONCLUSIONS
• Use of modern IT techniques in a transparent
manner to improve service to users (internet,
web, distributed systems, XML, etc.)
• Setting the standards (metadata, data quality
control, data stewardship)
• Working collaboratively whilst responding to
national remit
• Increasing data diversity (many different
parameters being measured)
• Developing systems to deliver (near) realtime data
MAMA MD&IM Workshop - 28 January 2004