The core partner data centres that are integrated in NorDataNet are listed in https://www.nordatanet.no/en/node/69. In addition to this NorDataNet harvests information on relevant datasets from a number of other data centres. The data centre responsible for the data presented is usually (but not always) listed in the discovery metadata. In essence NorDataNet is an aggregating service that combines information from a number of existing data centres.
Citation of data and service
If you use data retrieved through this portal, please acknowledge our funding source:
Research Council of Norway, project number 245967/F50, Norwegian Scientific Data Network.
Always remember to cite data when used!
Citation information for individual datasets is often provided in the metadata. However, not all datasets have this information embedded in the discovery metadata. On a general basis a citation of a dataset include the same components as any other citation:
author, title,
year of publication,
publisher (for data this is often the archive where it is housed),
edition or version,
access information (a URL or persistent identifier, e.g. DOI if provided)
All partner repositories of NorDataNet support Digital Object Identifiers (DOI), but not all datasets are minted. Whether or not minted depends often on source of the data (e.g. operational data are often yet not minted). However, all data centres support persistent identifiers according to local systems. The information required to properly cite a dataset is normally provided in the discovery metadata the datasets.
Brief user guide
The Data Access Portal has information in 3 columns. An outline of the content in these columns is provided above. When first entering the search interface, all potential datasets are listed. Datasets are indicated in the map and results tabulation elements which are located in the middle column. The order of results can be modified using the "Sort by" option in the left column. On top of this column is normally relevant guidance information to user presented as collapsible elements.
If the user want to refine the search, this can be done by constraining the bounding box search. This is done in the map - the listing of datasets is automatically updated. Date constraints can be added in the left column. For these to take effect, the user has to push the button marked search. In the left column it is also possible to specific text elements to search for in the datasets. Again pushing the button marked "Search" is necessary for these to take action. Complex search patterns can be constructed using logical operators identified in the drop down menu with and phrases embedded in quotation marks. Prefixing a phrase with '-' negates the phrase (i.e. should not occur in the results). Searches are case insensitive.
Other elements indicated in the left and right columns are facet searches, i.e. these are keywords that are found in the datasets and all datasets that contain these specific keywords in the appropriate metadata elements are listed together. Further refinement can be done using full text, date or bounding box constraints. Individuals, organisations and data centres involved in generating or curating the datasets are listed in the facets in the right column. The combination of search fields (including facets) is based on a logical "AND" combination of the fields, i.e. all conditions are fulfilled for the results provided.
Conductivity-Temperature-Depth (CTD) profiles with auxiliary sensor data from Norwegian Polar Institute cruise Arctic Ocean 2023 - 2 from north of Svalbard, across the shelf slope, and into the deep Nansen Basin of the Arctic Ocean between 10-29 August 2023. Three stations - 182, 216, and 221 - were part of the A-DBO (https://arcticpassion.eu/adbo/) network. The dataset includes profiles of sensor temperature, conductivity, uncalibrated dissolved oxygen, chlorophyll fluorescence, colored dissolved organic matter (CDOM) fluorescence (voltage only), beam attenuation, and calculated practical salinity (EOS-80). Profile data are from down casts only and available in a 1 decibar vertical resolution (i.e. averaged into 1-decibar bins). Chlorophyll fluorescence was calibrated against sample bottles using linear regression through the origin, excluding values larger than 8 mg/m3 (Figure 1 in summary_CTD_AO-II-2023_CTD.pdf). The salinity was verified against sample bottle salinities (Figure 2 in summary_CTD_AO-II-2023_CTD.pdf). Additionally, parameters for temperature, conductivity, salinity, chlorophyll, and beam attenuation are provided for the sampled bottle depths (named NISKIN_*).
The data are contained in a single, self-documenting netCDF file. Profile data are organized in arrays with one column per cast and one row per pressure bin (BIN_*). Data corresponding to the bottle depths are organized similarly, with one column per cast and one row per Niskin bottle. For stations 179-192 and 215-221 a rosette with 24 bottles was used and for stations 193, 195-214 a rosette with 12 Niskin bottles. For the latter, maximum of 12 topmost rows in the array are filled. 1-dimensional metadata such as time and position are organized in a row-vector with one value per cast. All variables have the same number of columns, equal to the total number of CTD casts. For more information on the sampling routines, please refer to the AO-II-2023 cruise report (https://hdl.handle.net/11250/3114227). The CTD post-cruise processing included the removal of salinity spikes. The primary conductivity sensor was of better quality than the secondary sensor and data from the primary sensors were selected to be included.
Conductivity-Temperature-Depth (CTD) profiles from Norwegian Polar Institute cruise AO-I-2023 to the Fram Strait. The dataset includes profiles of sensor temperature, conductivity, dissolved oxygen, chlorophyll fluorescence, coloured dissolved organic matter fluorescence, beam attenuation, and calculated practical salinity (EOS-80). Profile data are from down casts only and made available in a vertical resolution of 1 decibar (i.e. averaged into 1-decibar bins). The dataset also includes laboratory measurements of salinity and chlorophyll a from Niskin bottle samples. Laboratory results for several core parameters are to be added successively. The data are contained in a single, self-documenting netCDF file. Profile data are organised in arrays with one column per cast and one row per depth bin (pressure bin). Bottle data are organised in arrays with one column per cast and one row per Niskin bottle. One-dimensional metadata (such as time and position) are organised as a single row with one column per cast. Two-dimensional metadata (such as sample number) relate to Niskin bottle data and are organised in arrays with one column per cast and one row per Niskin bottle. All variables have the same number of columns, equal to the total number of CTD casts. For full information on the sampling and processing routines, please refer to the AO-I-2023 cruise report (https://hdl.handle.net/11250/3089166) and the CTD post-cruise processing report (included as file here).