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ODIN2 - User-friendly, web-based access to more than 85 million oceanographic readings

Bock, Steffen; Feistel, Susanne

Abstract

The Oceanographic Database of IOW (IOWDB) had originally been designed for particular internal requirements of the Leibniz Institute for Baltic Sea Research (IOW). IOWDB has always been aimed at the management of historical and recent oceanographic measurements. Most recently, the research tool ODIN2 was published to provide those research data to the public in a user-friendly way. The data stock possessed by IOW was declared as highly valuable by independent commissions. Research cruises have been conducted since 1949, and their data systematically collected. The post-processing and analysis of the resulting observational data was carried out by varying methods and with changing quality. A substantial fraction of legacy data was successively transferred to modern storage media, their quality was controlled and, if possible and necessary, improved by detailed individual scientific inspection. The content of our database includes oceanographic readings and metadata (mainly Baltic Sea) from 1877 to 2018 obtained during 932 research campaigns of the IOW (the former Institut für Meereskunde, IfM) and cooperating institutions. As of April 2018, the IOWDB contains more than 70 million measured samples representing georeferenced point data from the water column, primarily from CTD profiles, hydrochemical and biological sampling, current-meter time series, trace metal sampling and long-term monitoring. Phyto- and zooplankton data are available for 1988 to 2017. To access this data treasure the IOW released ODIN2 for the public (https://odin2.io-warnemuende.de). It is a web-based search application to access all of the data stored in the IOWDB. Instantly accessible are, for example, either ship tracks or station lists for each campaign as well as onthe-fly depth profiles of each CTD cast taken. For the long-term monitoring stations in the Baltic Sea, ODIN2 offers automatic visualisation of up to 50-year time series for regularly sampled parameters at standard depths. To explore the research data in IOWDB, ODIN2’s individual search engine is the most powerful and fastest tool. It offers complex search and filter options for geographic areas, time spans, seasons, depth range, parameters, cruises or standard positions. After executing a search, the results are integrated in user-friendly digital export formats such as plain text, xls or netCDF. ODIN2, and along with it IOW’s long-term monitoring data, have been made publicly available worldwide since April, 2018. For convenience, ODIN2 offers the creation of a URL as a permanent link to repeat or share any previously defined search. All research data available via ODIN2 are licenced under CC BY 4.0.

Full text

August 2023 Steffe n Bock IT, Susanne Feistel IT Leibniz Ins titute for Baltic Sea Research Warnemünde ODIN2 - User-friendly, web-based access to more than 85 million oceanographic readings https://odin2.io-warnemuende.de contact: steff[email protected], [email protected]e 1k 10k 100k 1000k 10000k 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 2020 IOWDB Timeline: data per year - new parameters - events and innovations Historical Sources: Research Stations & Expeditions, Lightvessels,... CTD Paper Punch Cards Magnetic Tapes Ingres MySQL + Salinity + Temperature + Sea Level + Meteorology + Phosphate + Nitrate + Oxygen + Chlorophyll + Nitrite + Hydrogen Sulfide + Primary Production + Ammonium + ADCP + An- / organic Pollutants + Natural Organic Matter + pCO2, Biological Data,... + Density TEOS-10 Uncertainty SHD IfM HELCOM IOW IOWDB IOWMETA ODIN2 Ship track and station list for monitoring campaign „Terminfahrt 2017/11“. Each station contains an inventory, documentation and depth profiles. List of stations available in IOWDB for the visible area (North & Baltic Sea) with station aliases from HELCOM and SMHI, as well as inventory for all measurements at each station. Depth profiles available in ODIN2 : A single CTD cast at the Gotland Deep in the Baltic Sea, taken November 19, 2017, from surface (top) to 240 m depth (bottom). Profiles from left to right: practical salinity ranging between 7 and 14 PSU, dissolved oxygen concentration (8 to 0 ml/l) and temperature (8 to 4 °C). The stratification of the Baltic Sea is instantly visible. Visualisation of long-term measurements of dissolved oxygen and hydrogen sulphide at the Gotland Deep in the central Baltic Sea. The time series starts in 1969 and continues to 2012. Displayed are data from the surface (5 m, blue dots), from the halocline depth (80 m, red dots ; 100 m, yellow dots) and from the near-bottom depth (200 m, green dots). Clearly discernible are the Major Baltic Inflow events in 1993, 2003 and 2014. IOWDB: the underlying database The content of our database includes oceanographic readings and metadata (mainly Baltic Sea) from 1877 to 2023 obtained during 976 research campaigns of the IOW (and former Institut für Meereskunde, IfM) and cooperating institutions. As of April 2023, the IOWDB contains more than 85 million measured samples representing georeferenced point data from the water column, primarily from CTD profiles, hydrochemical and biological sampling, current-meter time series, trace metal sampling and long-term monitoring. Phytoand zooplankton data are available for 1988 to 2021. Registration is a simple e-mail verification. It is used to bind searches to a user and enable saving and sharing of searches. To explore the research data in IOWDB, ODIN2’s individual search engine is the most powerful and fastest tool. It offers complex search and filter options for geographic areas, time spans, seasons, depth range, parameters, cruises or standard positions. After executing a search, the results are integrated in user-friendly digital export formats such as plain text, xls or netCDF. After Registration Instantly accessible are, for example, either ship tracks or station lists for each campaign as well as on-the-fly depth profiles of each CTD cast taken. For the long-term monitoring stations in the Baltic Sea, ODIN2 offers automatic visualisation of up to 50-year time series for regularly sampled parameters at standard depths. Open Access ODIN2: a public, web-based search application The Oceanographic Database of IOW (IOWDB) had originally been designed for particular internal requirements of the Leibniz Institute for Baltic Sea Research (IOW). IOWDB has always been aimed at the management of historical and recent oceanographic measurements. Most recently, the research tool ODIN2 was published to provide those research data to the public in a user-friendly way. ODIN2, and along with it IOW’s long-term monitoring data, have been made publicly available worldwide since April, 2018. For convenience, ODIN2 offers the creation of a URL as a permanent link to repeat or share any previously defined search. All research data available via ODIN2 are licenced under CC BY 4.0