Requests from F. Blanc• Retrieve information from each individual national reports and present this.

– 2. Data serving– The HYCOM products are freely available daily 3D fields of the ocean state served daily at

http://www.hycom.org/dataserver (hindcasts and 8-day forecasts).

• Comment on the two GODAE papers (Blank et al, Haines et al).– “By agreeing upon common standards and conventions for describing data, and by encouraging

data providers to provide common views of their data, complex datasets can be discovered, manipulated and understood with easy-to-use tools and web portals.”

– Open GIS, ncWMS, GODIVA2?

• Report on last years actions in particular the need to enhance the national report on data serving. And for this I proposed to follow the Inspire guidelines and DMAC issues:

– Cataloguing, discovery & query functions, together with primary visualisation to understand and assess the products

– Data specification, metadata and inventory/time aggregation solutions (for interoperability)– Delivery/extraction of numerical datasets (and their user commitments)– Interoperable analysis and visualisation tools for data qualification, product comparison or science

data use– Tools for animations or intercative 4D plots– Monitoring and reporting (product handling, operationality, usage report, user feedback)

http://www.GODAE.org

Report on Product & Data servers

• Lack of visibility

• Impressed by internet services offeredstandalone cataloguesprimary viewing services interoperable extraction toolsintegrated

Should be more promoted Catalogue of services (cf. GCMD)

Ground common technology Access & Inventory

Opendap/Thredds + NetCDF/CF (= GODAE standard)

http://www.GODAE.org

Report on Product & Data servers

• Lack

• Missing user guidance System descriptions Guide for products, Guide for services,

http://www.GODAE.org

Report on Product & Data servers

• Input in national reports

available afterwardsavailable online ? Using CMS technology ?not so homogeneous

what do we expect from this report with respect to data servers ?

What services on data are available (catalogue, viewing, delivery, user guidance) Report on operationality & qualification wrt production Report on user (who, products requested, how often, for what for) Report on technology & capacities (volume, handling, networking) Strong and weak features

http://www.GODAE.org

Marine Core Service

Example

2) My Ocean Web Portal

Marine Core Service

Example

Marine Core Service

Marine Core Service

What will be available at T18

Good support for visualizing in situ obs (hopefully)– (developed under ECOOP project)– Map will show positions of observations– User clicks on observation to find more detail– (will require agreement upon file formats and metadata

conventions for such data. Not yet covered by CF)– Depends on being able to discover obs locations!!

Dynamic interpolation from sigma to zed levels

Support for non-map outputs such as vertical sections– Needs discussion to establish priorities

Marine Core Service

Anticipated “final” deployment

NetCDFMFC 1 NetCDFMFC 2 NetCDFTAC 1

THREDDS

WMS

OPeNDAP

WCS?

THREDDS

WMS

OPeNDAP

WCS?

THREDDS

WMS

OPeNDAP

WCS?

WMS bundled with THREDDS

MFCs/TACs install single piece of software

Dynamic Quick View (DQV) Service• Gives very fast

previews of 4-D data on an interactive website

• Reads data from OPeNDAP servers at the MERSEA TEPs

• Draggable, zoomable map

• Allows the fast creation of animations

• Based on a standards-compliant Web Map Service

Selection of depth

Select from all the depth levels of the model

Selection of time (range)

Select from all the timesteps in the model

Selection of a time range leads to an animation

Finding the data value at a point

Click on the data layer, data value and precise position is shown

Lon: -64.08 Lat: 36.21 Value: 19.27

Timeseries plots

If a time range is selected, can create a timeseries plot at a point

Export to Google Earth• DQV website

contains link to load currently-visible data into Google Earth– Our WMS outputs in

KMZ format

• Can then view data alongside other KML datasets– e.g. DAMOCLES

• Can view animations of data

• No problem with map projections!

Visualize alongside third-party data• Hurricane Katrina,

August 2005

• Showing sea surface temperature (UK Met Office) and storm position/intensity (ECMWF)

• Winds cause upwelling of cooler subsurface water on right-hand side of the cyclonic storm track

Selection of non-MERSEA datasets also available

OSTIA (GHRSST-PP): SST and sea icehigh res (1/20°)

NSIDC Snow-water equiv.(non-NetCDF)

ECMWF System 3Reanalysis

Everything on the website can be exported to Google Earth

Important features of our WMS implementation

• Fast generation of images

• Handling of four-dimensional data

• Handling of data on unusual grids, e.g. NEMO

• Dynamic change of colour scale extent

• Generation of animations

• Export to Google Earth

MERSEA data in third-party clients

NASA World Wind

Cadcorp SIS

Google Earth

In-situ data• Picture left shows

comparison of NEMO model and observations for Nov 2004

• Red dots show bad model-obs fits, green dots are good fits

• Google Earth allows very efficient browsing of these large datasets

• Could do the same for MERSEA systems, e.g. CORIOLIS

• Could read obs and model data from different sources and bring together in Google Earth or another client

DQV future enhancements

• Display of wind/current fields as vectors• Caching of image tiles for performance increase• Support for more map projections

– E.g. polar stereographic

• Display of observations on website• Integration with GeoServer, THREDDS

– Requires community assistance

• …Lots more!

Summary

• Lots going on

• Section II of report is important

• Guidance to users is required on how to get/use tools

• Need a master directory