Chemistry

Data & products on marine water quality

How does it work

Users can discover and request access to measurement data and related metadata through a sophisticated interface that allows to search by a set of criteria.

The process from searching to getting access to requested measurement datasets is illustrated and explained below. This mechanism allows users to retrieve original datasets from the distributed system of data centres.

Search data or just browsing

All users can freely query and browse in the system; however, submitting requests for data access requires that users are registered in the EMODnet/SeaDataNet central user register (Marine-ID), thereby agreeing with the overall SeaDataNet User Licence. Registered users are provided with a smooth user experience and more options.

Search data and start shopping

The query interface, shown below, enables to search by several criteria spanning from time to coordinates, to parameter groups, originators and collators.

Then, search results are listed and data geographical locations are indicated on a map. The list can be retrieved anytime clicking on the search results button.
Clicking on each dataset name, users can retrieve the full related metadata: what, where, when, how, and who of the data set. It also gives standardized information on the data access restrictions, that apply.
Users can either save search query and rerun it again in the future, clicking on save query button, or include the selected data sets in a shopping basket ticking the boxes related to the selected datasets.
Clicking on Summary, users can get information on the selected datasets per topic, e.g. per data distributor, originator, group of variables.

Shop and Order/check out

Once the datasets are selected, the shopping mechanism, shown below, is accessible clicking on the DATASET BASKET tab:

View progress on line

All data requests are forwarded automatically from the EMODnet Chemistry portal to the relevant data providers. This process is controlled via the Request Status Manager (RSM) service at the portal that communicates with the data providers. The RSM service allows users to check the status of their requests and download datasets from the associated data providers, once access has been granted. On their turn, data providers can follow, via the RSM service, all transactions for their datasets online and can handle requests that might require their mediation.

Data download

Each CDI metadata record includes a data access restriction tag. It indicates under which conditions the data set is accessible to users. Its values can vary from 'unrestricted' to 'no access' with a number of values in between.
During registration every user will be qualified by its national NODC/Marine Data Centre with one or more SeaDataNet roles.
The RSM service combines for each dataset request the given data access restriction with the role(s) of the user as registered in the SeaDataNet central user register.
This determines per dataset request, whether a user gets direct access automatically, whether it first has to be considered by the data centre, that therefore might contact the user, or that no access is given.

Remark: Data for beach litter and seafloor litter are gathered, managed and published by means of two central databases, which are developed and populated by EMODnet Chemistry in cooperation with the MSFD Technical Group on Marine Litter (TG-ML), EU JRC, RSC's, ICES, and several relevant EU projects, regional and local initiatives. For microlitter it has been decided to adapt the SeaDataNet service approach and dedicated guidelines are formulated in concertation with the TG-ML.