GALEON and Other Outreach Activities Status Update
April 2008
GALEON 2 Action Plan
As of March 2007
Action Plan Outline
-
Agree on high-level dataset categories
-
Establish extensions to CF conventions for each dataset category
-
Determine relationships to:
-
Unidata CDM Scientific Data Types
-
CSML Scientific Feature Types
-
Obs. & Meas. Sampling Features
-
Map CF-netCDF categories to ISO 19123
-
Establish metadata forms: CSML, ncML-G
-
Experiment with CF-netCDF encoded coverages as payload for WCS,
WFS, SOS
Divide (Labor) and Conquer
-
Coordinate individual efforts toward a whole greater than the sum of the
parts
-
Each group focuses on areas of expertise
-
Work on tasks group has funding for
-
Stay aware of other groups’ efforts
-
Coordinate efforts wherever possible
-
Results of lessons learned from implementation and
experimentation feeds into standard definition process
British Atmospheric Data Center: Scientific Feature Types / CSML
-
conceptual level mapping of CSML Scientific Feature Types to O&M and
ISO 19123 coverages
-
broadening community engagement with CSML
-
CSML (GML) representation of metadata (and data in some cases) for CS
community datasets
-
implementation (python) of and experimentation with minimal WCS
needed to serve CS community datasets
-
[Note:] Python client (to both WCS 1.0 and 1.1)
has been agreed to be adopted into OWSLib]
-
examination of alternative protocols (e.g., WFS) for serving
CSML datasets
-
liaison with GML, WFS, and CS communities
U of Florence CNR/IMAA: Common Data Model, ncML-G, CS-W
-
Conceptual level mapping of CDM Scientific Data Types to ISO 19123 coverages
-
CF-netCDF conceptual and encoding level mapping of CDM Scientific Data
Types
-
ncML-G (GML) representation of metadata (and data in some cases) for
CDM/CF-netCDF community datasets
-
implementation (Java) of minimal WCS server and client needed for CDM
data types
-
implementation (Java) of CS-W client and server that includes
THREDDS catalog access
-
liaison to catalog standards and European data systems communities
George Mason University: NASA data / HDF-EOS / CS-W
-
serving NASA satellite data (swath data type)
-
implementation of WCS clients and servers for those datasets
-
liaison to HDF-EOS community
-
implementation of CS-W services for THREDDS catalogs
-
liaison to catalog standards development and implementation
communities
Unidata: CDM Scientific Data Types / CF-netCDF
-
conceptual level mapping of CDM Scientific Data Types to ISO 19123 coverages
-
work to extend CF conventions to include CDM CDM Scientific Data Types
-
CF-netCDF encoding level mapping of CDM Scientific Data Types
-
implementation (Java) of minimal WCS server as part of TDS
(THREDDS Data Server) to serve CF-netCDF community datasets
-
harmonize TDS metadata with standards: CSML, ncML, CS-W
-
liaison to CF, Oceans (irregular grids, SWE), Hydrology
(Observation Data Model), CS-W
SURA/DataFed: SWE / station obs / irregular grids
-
joining efforts to extend CF for station obs and irregular grids
-
mapping station obs and irregular grids to ISO 19123 standard coverages
-
mapping those ISO coverages to SWE O&M sampling feature types
-
liaison with air quality and coastal oceans communities
-
experimenting with connections among WCS, WFS, SOS data access
-
liaison with SWE efforts and Oceans IE
British Met Office
-
Provision of a proprietary WCS to test client interoperability (initially
WCS 1.0, later WCS 1.0+)
-
Evaluation of THREDDS Data Server (TDS) to provide access to Met Office
data (internally), including the WCS interface
-
Development of TDS IO Service Providers for two Met Office bespoke
formats (PP format and Nimrod format) which would make those datasets
available via WCS
-
Proposal to extend (and revise) CF metadata convention to enhance the
grid mapping attributes (Phil Bentley - see:
http://cf-pcmdi.llnl.gov/trac/ticket/18)
-
Provide useful review input for GALEON activities.
The Next Generation Air Transportation System (NextGen) concept for weather
hinges on the ability to develop a common weather "picture," and to
integrate that picture into NextGen decision-making processes. An effort is
needed to fuse tens of thousands of global weather observations and sensor
reports from ground-, airborne-, and space-based sources into a single
national (eventually global) weather information system, constantly updated
as needed. The effort focuses on four functional areas, dissemination,
integration, forecasting, and observation, to realize the goals of the
NextGen Integrated Plan.
-
Includes NCAR RAL, MIT Lincoln Labs, ITTvis and Others
-
WCS 1.1 experimentation
-
Aviation-related use cases
-
Special 3D-plus-time and vertical cross-section coverages
-
Active participation in WCS 1.2 Standards Working Group
Open Geospatial Consortium Technical Committee Meetings (week of March 24)
We made joint presentations with the NNEW Project during the Earth
Observations / Natural Resources Environment, Coverages Working Group
Sessions. Focused on aviation related use cases which emphasize
characteristics of data systems that are special to atmospheric and related
sciences, e.g.,
•
-
Real-time access
-
Elevation/altitude dimension is important
-
Elevation dimension often given in terms of
pressure
-
Range interpolation depends on physics as
well as geometry
-
Automated processing components, e.g.,
Note also that the
Sensor
Web Enablement (SWE) suite of protocols seems to be gaining considerable
practical, implementation and experimentation momentum. We
are a sponsor of the Oceans Interoperability Experiment which is
heavily oriented toware SWE protocols and technologies, but it may be worth
considering a more direct and active role.
CoAHP Workshop Proposal to NSF
PI - Olga Wilhelmi,
NCAR
Co-PIs: Richard Hooper,
CUAHSI, Peter Thornton, NCAR, Ben Domenico, Unidata
Atmospheric Information
in Hydrologic and Ecological Applications: Defining users needs
Proposal
Objective: This proposal is for conducting a workshop directed at
user-defined spatial integration of atmospheric, hydrologic and ecological
information. The workshop will: 1) bring together representatives from
atmospheric, hydrologic, ecological, GIS, and computer
science/cyberinfrastructure communities to learn about users’ knowledge and
current and potential uses of atmospheric observational data as well as
weather and climate model outputs in hydrological and ecological applications;
2) discuss existing barriers to data and metadata interoperability among the
scientific domain communities; 3) determine users needs and preferences
in weather and climate data and model outputs with the focus on specific
variables, spatial and temporal scales, and resolution, geographical
representation, and mechanisms for data access and discovery; 5) outline
research and development strategies for seamless integration of atmospheric
data and models with hydrological and ecological data; and 6) discuss
opportunities for developing extensible web services for data discovery,
access, and transformation. The ultimate goal of the workshop is to have a
dialog between atmospheric data providers, technology experts, and the
representatives of research communities, so that atmospheric modeling and data
archiving communities can better serve the users in environmental geosciences
and ecology. The workshop program will include expert presentations,
interdisciplinary group discussions, and a writing session. The workshop will
produce specific recommendations to the NSF regarding spatial integration of
atmospheric models into hydrologic and ecological applications.
