Transcript ADAGUC results at EGU 2009

OGC Web Services at KNMI
20th annual meeting of the European Working Group on
Operational meteorological Workstations (EGOWS)
De Bilt, June 8, 2009
Raymond Sluiter
R&D Information and Observation Technology
KNMI
[email protected]
Outline
1.
2.
3.
4.
OGC Web Services introduction
(Potential) use at KNMI
Demonstration project: ADAGUC
Conclusions
OGC Web Services


OGC Web Services use open standards
for interoperable data exchange of
georeferenced data.
KNMI is currently focussing on the
following services and standards:





WMS - Web Mapping Service
WCS - Web Coverage Service
WFS - Web Feature Service
CSW/CAT – Catalogue Services
–
–
–
–
For visualization of maps
To retrieve raster data
To retrieve vector data
To publish and search
metadata.
SWE - Sensor Web Enablement – Suite of standards to make
all types of sensors, transducers and sensor data repositories
discoverable, accessible and useable via the Web
(Potential) use at KNMI
 External data exchange:



Exchange data between the meteorological and
geospatial community
Exchange data within the national GSDI
Exchange data within the international GSDI (INSPIRE)
interpolated average temperature
radar
(Potential) use at KNMI
 Internal data exchange:



Data source for GIS based climatological and
meteorological research.
Data source for operational meteorology (MWS)
- connect to services from standalone MWS
- connect to services through web based portal
“Web Service Enablement” of KNMI intranet products
(Weather portal (“weather filing cabinet”))
(Potential) use at KNMI
“Web Service Enablement” of KNMI intranet products
http://adaguc.knmi.nl
Demonstration project:
ADAGUC
 Atmospheric Data Access for the Geospatial User
Community (ADAGUC), http://adaguc.knmi.nl
 Bridging the geospatial and meteorological community
 Atmospheric Datasets in GIS systems
 Metadata: ISO-19115, INSPIRE, NL Metadata Standard,
Climate and Forecast metadata convention , OGC > WMS,
WFS,WCS
 Web Mapping Service
(For visualization)
 Web Feature Service
(To retrieve vector data)
 Web Coverage Service
(To retrieve raster data)
DATA
PRODUCTS
SERVICES
SCIAMACHY
ECMWF
GOME
OMI
MSG
radar
Web browser
Binary
Binary
Binary
Binary
Binary
ASCII
Binary
Binary
Other
ADAGUC
ADAGUC
Container
ADAGUC
Container
Format
Container
Format
Format
WMS
GDAL/OGR
WFS
WCS
ADAGUC Portal
http://adaguc.knmi.nl
OGC Web Services
ArcGIS
gvSIG
uDIG
GoogleEarth
…
& many others
http://adaguc.knmi.nl
NetCDF4 as data carrier
 Joint project between Unidata and HDF Group
 NetCDF 4 uses HDF5 as the storage layer of NetCDF
 Programming interfaces are backward compatible with
the netCDF3 programming interface
NetCDF3
popular, simple, lots of tools,
multiple implementations
HDF5
powerful, high-performance,
storage efficiency, extensibility
NetCDF4
Best of both formats combined!
http://adaguc.knmi.nl
ADAGUC product standard
(available on website)
Vector data
Geographic raster data
B
iso_dataset
A
iso_dataset
A
iso_dataset
product
product
product
projection
projection
projection
time
B
time
B
time
lat (time)
lat
y
lon (time)
lon
x
TMTNO2 (time, lat, lon)
lat (y,x)
TMCNO2 (time, lat, lon)
lon (y,x)
lat_bnds (time)
lon_bnds (time)
C
RADAR_OPER_R___NL25PCP … h5
SCIA__OPER_R___TMNO2 … h5
SCIA__OPER_V___TDNO2 … h5
A
Projected raster data
TDTNO2 (time)
TDCNO2 (time)
C
C
NL25PCP (time, y, x)
http://adaguc.knmi.nl
Metadata: find- and use-ability
 Self contained in data files
 INSPIRE – ISO 19115
 Climate and Forecast convention
http://adaguc.knmi.nl
GDAL/OGR drivers
Open source translator library for raster geospatial
data formats
Used in many software products
UMN MapServer, GeoServer, Quantum GIS, ArcGIS, GRASS,
OpenEV etc..
GDAL - Geospatial Data Abstraction Library
 Access raster data
OGR - Simple Feature Library
 Access vector data
GDAL/OGR extensions for the ADAGUC format
standard are available:
http://trac.osgeo.org/gdal/wiki/ADAGUC
http://adaguc.knmi.nl
ADAGUC portal
stacked on WMS/WFS/WCS
WMS
GetLegendGraphic
WMS GetCapabilities
WMS GetMap
WMS
GetFeatureInfo
http://adaguc.knmi.nl
Download from portal
 Obtaining the real data through OGC services
or the original ADAGUC (NetCDF/HDF5) files
 WFS or WCS ?
 WebGIS client selects the appropriate
service depending on the datatype
(raster/vector)
 WCS – obtain optimal parameters:
 Predefined bounding box, columns, rows
and cell size
 No resampling/interpolation
User is always free to adjust the parameters
 User must select his favorite (GIS) format
http://adaguc.knmi.nl
ECMWF model
2D params + time
http://adaguc.knmi.nl
AMSR Soil Moisture
http://adaguc.knmi.nl
GOME: Ozone, Cloud fraction
http://adaguc.knmi.nl
Sciamachy Methane
monthly avg
http://adaguc.knmi.nl
RADAR Rain Rate
in real time
http://adaguc.knmi.nl
RADAR Rain Rate
in real time
KNMI WMS at the Dutch National Institute for Public
Health and the Environment (RIVM)
http://adaguc.knmi.nl
RADAR Rain Rate
KNMI WMS in NinJo…
in real time
http://adaguc.knmi.nl
GIS programs using ADAGUC
ArcGIS Explorer
Google Earth
gvSIG
ArcGIS Desktop
IDV
HDF Explorer
Quantum GIS
UDIG
NASA’S Panoply
Conclusions
 Large potential for OGC web services at KNMI
for external and internal data exchange
 ADAGUC portal and services are ready:
 Satellite, model, and radar datasets are
available and more will follow.
 Next challenges:
 Start using catalogue services (CSW/CAT).
 Data policies, operational status.
 4 dimensional data.
 Client applications should work on
supporting the OGC standards.
Thank you for your attention !
Please visit:
http://adaguc.knmi.nl
for
WMS/WFS/WCS services
(with real atmospheric data)
Webportal
Product descriptions
Software
Documentation
(including over 40 ADAGUC presentations)
In preparation: IEEE Selected Topics in Applied Earth
Observation and Remote Sensing (J-STARS)
“Heterogeneous data access and use for geospatial
user communities”