Data and data product visualization in EMODNET Chemistry

Transcription

1 Data and data product visualization in EMODNET Chemistry Alexander Barth (1), Giorgio Santinelli (2), Gerrit Hendriksen (2), Jean-Marie Beckers (1) (1) University of Liège (Belgium), (2) Deltares (Netherlands)

2 OceanBrowser Web-based visualization of data products (i.e. gridded data set based on observations) Current address: Latest developments: 2

3 Layer selection First entry: gridded data products Gridded field generated by DIVA (Data-Interpolating Variational Analysis) Organized by domains then variables Gridded field have not a uniform expected error Analysed fields are masked by expected error Full field available in Additional fields

4 Horizontal section Items of the floating panel Select depth and time Plot style Metadata Download of data product

5 Vertical section Vertical section can be drawn with the mouse Data product will be extracted along this section (x-axis: distance from starting point and y-axis depth) Section coordinates can be saved (to visualize two parameters at exactly the same section)

6 Vertical section marker shows the corresponding position of the cursor The path of a vertical section can be generated automatically by: fixed distance from coast or fixed ocean depth

7 Vertical section

8 Available styles Styles Interpolated Filled contours Simple contours Colorbar options Colormap Range

9 Download a data product Download icon (green arrow) Data available as NetCDF or OPENDAP depth and time Image / Animation export

10 More information Info icon (i in blue circle) Link to the data products catalogue (Sextant) Bounding box Time range Depth range

11 Observations Separated in Monitoring station (only time series) All observations (include monitoring station) Organised by MSFD parameter groups (P35) Dynamically

12 Data architecture Step 4 Oceanbrowser Step 3 OGC services WFS, WPS Step 2 Step 1 ODV Enriched ODV files

13 Data model

14 Stucture of Request GetCapabilities What services

15 Stucture of Request Describe What can the services offer

16 Stucture of Request GetCapabilities What services Cdi_Get_Parameters Query all observations using cdi Bbox_Get_Parameters Query all observations using bbox Cdi_Plot_Maps Plot a map in binary mimetype bbox_plot_maps Plot a map in binary mimetype Cdi_Plot_Profiles Plot a profile in binary mimetype bbox_plot_profiles Plot a profile in binary mimetype Cdi_Plot_Timeseries Plot a timeseries bbox_plot_timeseries Plot a timeseries

17 Spatial distribution Circles show data location (within depth and time range) Circle are semitransparent (intensity of a color gives an indication of number of observation points)

18 Time series Clicking on a circle Time series plots (x-axis: time; y-axis: parameter) Depth is represented by color

19 Profiles One can switch between time series and profile view For profiles (x-axis: parameter and; y-axis: depth) Time is represented by color

20 Oceanbrowser in action

21 EMODnet Thematic Portal User Survey 2014 Downloaded images contain now a title with the parameter, depth and time information Difficulty to distinguish two maps with the name (but from different folders) information from region and parameter is now provided as a tooltip (hover with the mouse over the title) Difficulty to understand the icons move the mouse over the icon an explication will show up Select more than one dataset at a time by using control-left click (as in a file manager)

22 To do From development production More data Optimize data model Optimize processes WPS services and data together Evaluate Current plot types Ambition Establish new plot types 3D visualisations like...?

23 Conclusions OceanBrowser allows to visualize gridded data sets: along a horizontal section (at given time and depth) Along a vertical section (e.g. at a fixed distance from coast) Visualization of observations: Integration of web services from Deltares Profiles and time series Based on OGC standards (WMS, WFS, WPS and NetCDF)