GEOMON- Global Earth Observation Monitoring
MOE – Mercury Species over Europe
IMPACTS – Integrated Monitoring Programme on Acidification of Chinese Terrestrial Systems
SOGE – System for Observing Halogenated Greenhouse Gases in Europe

Welcome to EBAS

EBAS is a database hosting observation data of atmospheric chemical composition and physical properties. EBAS hosts data submitted by data originators in support of a number of national and international programs ranging from monitoring activities to research projects. EBAS is developed and operated by the Norwegian Institute for Air Research (NILU). We hope the information found on the web-site is self explaining, and we would particularly ask you to consider the text found in the data disclaimer and in the "info" pages associated to the filter criteria.

Data availability and data policy issues

All datasets in EBAS are associated to one or more "projects", having individual rules for data disclosure (if a dataset is associated to several projects the one with the least restrictive data policy will actually limit the access). The project association is normally set by the data originator through the submission process, but can also be set by the data base management team at NILU.

• Public data

Most of the data stored in EBAS are originating from programs encouraging an unlimited and open data policy for non-commercial use. For scientific purposes, access to these data is unlimited and provided without charge. By their use you accept that an offer of co-authorship will be made through personal contact with the data providers or owners whenever substantial use is made of their data. In all cases, an acknowledgement must be made to the data providers or owners and to the project name when these data are used within a publication. Public data are available without login.

• Data with restrictions

Access to restricted data requires the user to approve the associated data policy. The approval process which follows may in simple cases be an automatic procedure where the users by default is granted access (a log of signed data policy agreements is stored at NILU), or in more restricted cases will the request be handled by an authorized person on behalf of the formal deciding body of the respective project.

For more information about data policies associated to the projects with data stored in EBAS, please visit the "info" page which is available from the projects search filter. Here one can also find information whether the data stored in EBAS represents a primary database or if they are a secondary copy. It also informs if NILU has a mandate to conduct QAQC efforts related to the data.

• User Support

User support is available through email: We are happy to receive any comments related to functionality, user friendliness, software bugs or errors in datasets.

We also encourage users to contact us to get support for export of larger amounts of data in specific formats, calculation of statistics etc.

• Specific disclaimer for data from OSPAR Comprehensive Atmospheric Monitoring Programme (CAMP)

Considerable efforts have been made to assure the accuracy and reliability of the information contained in this database. Participating OSPAR Contracting Parties aim to adhere to the CAMP principles whose implementation may differ nationally and from other international atmospheric monitoring programmes. Neither OSPAR nor any of the OSPAR Contracting Parties and NILU can accept liability resulting from the use of this information.