PANGAEA is hosting YOPP data. Information on these datasets are regularly harvested from the YOPP Data Portal and ingested. YOPP datasets hosted by PANGAEA are attached to the YOPP project which is available at https://www.pangaea.de/?f.project=YOPP. Several of the datasets have parent/child relationships. Maintenance of these parent/child relationships is attempted in the searchable YOPP catalog.

British Antarctic Survey (BAS) is collecting radiosonde data that were produced during YOPP Southern Hemisphere Special Observing Period (SOP). These data are stored on a FTP server by BAS which is available at ftp://ftp.bas.ac.uk/src/YOPP-SH/radiosondes/.

Following an upgrade of the front- and backend services of the catalogue, the catalogue search engine was restructured yesterday and reindexing of datasets initiated. During the evening of November 21 a hardware outage prevented completion of the reindexing process. Due to this, the catalogue is yet not properly populated. This work will continue once hardware issues have been fixed.

An interactive service that can be used to validate NetCDF/CF and ACDD files have been added to the Support section. This is available through https://yopp.met.no/dataset_validation/form.