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Multibeam bathymetry processed data (Kongsberg EM2040 working area dataset) of RV ALKOR during cruise AL644, Baltic Sea

Swath sonar bathymetry data recorded during AL644 on RV ALKOR using the hull-mounted Kongsberg EM2040 multibeam echosounder. The cruise took place between 17.11.2025 - 28.11.2025 in the German Baltic Sea. The approximate depth range of the mapped areas is between 10-30m. To improve MBES data quality, sound velocity profile (SVP) casts were conducted in the vicinity of the mapped area prior to and after each survey using a CTD. The data set includes data from the 'Adlergrund' (ADG), located within the Pommeranian Bay/Rønne Bank Nature Conservation Area (NCA), from the 'Kadet Trench ('KDR') NCA and the Fehmarn Belt ('FB') NCA. The mapping has been conducted for baseline habitat studies in the area. Data were manually edited for false measurements using Qimera (https://qps.nl/qimera/#). A raster was calculated and stored in GeoTIFF format with a 0.5 m resolution (negative values), WGS84 as vertical datum and UTM as a projection. The mapping has been conducted for baseline habitat studies in the area.

Multibeam bathymetry processed data (Atlas Hydrosweep DS 3 echo sounder entire dataset) of RV POLARSTERN during cruise PS127, Atlantic Ocean

Multibeam data were collected during RV Polarstern cruise PS127 (2021-12-04 to 2022-01-02). Multibeam sonar system was Atlas Hydrographic Hydrosweep DS 3 multibeam echo sounder. Data are processed with Caris HIPS, including sound velocity correction with SV data from SVPs, CTDs, UCTDs and World Ocean Atlas 13 (https://doi.org/10.7289/v5f769gt), tidal correction with TPXO9_atlas_v5 (https://www.tpxo.net), and manual cleaning. The soundings are combined in daily files, the format is XYZ ASCII (<Lon> <Lat> <Depth in meters, positive up, relative to mean sea level>). Additional blockmedian grids have been computed with depth dependent cell size to visualize the data. These grids are not meant for scientific analysis or navigation, but for overview purposes only.

GTS Bulletin: SNLV11 UMRR - Surface data (details are described in the abstract)

The SNLV11 TTAAii Data Designators decode as: T1 (S): Surface data T1T2 (SN): Non-standard synoptic hour A1A2 (LV): Latvia (Remarks from Volume-C: NilReason)

Biotopkartierung (SH4) Marine Daten

Der vorliegende Geodatensatz umfasst alle bis zum angegebenen Stand kartierten bzw. abgegrenzten FFH-Lebensraumtypen (= LRT) der Meeresgewässer und Gezeitenzonen (1110, 1130. 1140, 1160, 1170) ohne die LRT 1110 und 1170 der Ostsee, für die ein separater Datensatz bereitgestellt wird. Die Abgernzungen in der Nordsee wurden durch die zuständige Nationalparkverwaltung durchgeführt bzw. mit ihr abgestimmt und spiegeln den aktuellen Kenntnisstand wieder. Die Abgrenzungen in der Ostsee wurden in Abstimmung mit der Abteilung Wasserwirtschaft, Dezernat Küstengewässer z. T. anhand von Tiefenlinien und Exposition durchgeführt. Die Abgrenzungen erfolgten i. d. R. nicht durch tatsächliche Kartierung im klassischen Sinne durch Inaugenscheinnahme, sondern durch Detektion (z.B. Sonar) und dient in erster Linie der Abgrenzung LRT zur Erfüllung europarechtlicher Berichtspflichten. Die Anspache der z.T. flächenidentischen gesetzlichen Biotope sowie die Bewertung des Erhaltungsgrades der LRT wird in diesem Datensatz nicht abgebildet. Weitergehende Erläuterung zum Begriff "Wertbiotop": Im Rahmen der BK gehören zu den Wertbiotopen grundsätzlich alle Flächen, die entweder als gesetzlich geschützte Biotope gemäß § 30 BNatSchG i. V. m. § 21 LNatSchG gelten und/oder als Lebensraumtyp (LRT) gemäß Anhang I der FFH-Richtlinie (92/43/EWG, 21.05.1992) anzusprechen sind. Hinsichtlich des gesetzlichen Biotopschutzes ist der Stand nach der Novellierung des Landesnaturschutzgesetzes (LNatSchG) in 2016 (Veröffentlichung in dem GVO Nr. 7 vom 23.06.2016, Seite 162) berücksichtigt und schließt das „arten-und strukturreiche Dauergrünland“ mit ein. Auch die Änderungen aufgrund des § 21 Absatz 7 des Landesnaturschutzgesetzes (LNatSchG), zuletzt geändert durch Verordnung vom 27. März 2019 (GVOBl. Schl.-H. S. 85), sind berücksichtigt sowie - soweit bereits erhoben bzw. in Schleswig-Holstein überhaupt v.h. - auch die seit dem 1. März 2022 gem. § 30 Absatz 1 Nummer 7 BNatSchG neu erfassten gesetzlich geschützten Biotope. Zu den Wertbiotopen gehören im vorliegenden Geodatensatz sämtliche Flächen/ Geometrien, die in den Tabellenspalten „BTSCHUTZ_1“ und/oder „BTSCHUTZ_2“ der Attributtabelle einen Eintrag einer Biotopverordnungsnummer (VO) oder die in den Tabellenspalten „LRT_TYP_1“ und/oder „LRT_TYP_2“ einen Eintrag eines Natura 2000- bzw. EU-LRT-Codes aufweisen. Nachrichtlich weist das LfU darauf hin, dass der Schutz des § 30 BNatSchG i. V. m. § 21 LNatSchG aktiviert wird, wenn und sobald eine Fläche die charakteristischen Merkmale eines gesetzlich geschützten Biotopes erfüllt. Der in § 30 Abs. 7 thematisierten Registrierung, die sich nach Landesrecht richtet und zumeist in Biotopkartierungen, Listen oder Biotopverzeichnissen ihren Niederschlag findet, kommt daher eine lediglich deklaratorische Bedeutung zu. D.h. nicht erst durch die Kartierung bzw. Erfassung und Registrierung werden Flächen zum geschützten Biotop, sondern der Charakter als gesetzlich geschütztes Biotop ergibt sich unmittelbar aus dem Gesetz. Bei Fragen und in Zweifelsfällen ist mit der fachlich zuständigen Person im LfU Rücksprache zu halten. Hinweis: Daten der maritimen LRT 1110 und 1170 in der Ostsee, befinden sich in dem separaten Geodatensatz "Maritim_Daten_Ostsee_LRT_1110_und_1170".

GTS Bulletin: ISND01 EDZW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The ISND01 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level T1T2A1 (ISN): Synoptic observations from fixed land stations at non-standard time (i.e. 01, 02, 04, 05, ... UTC) A2 (D): 90°E - 0° northern hemisphere (The bulletin collects reports from stations: 10004;UFS TW Ems;10015;Helgoland;10020;List auf Sylt;10035;Schleswig;10055;Fehmarn;10147;Hamburg-Fuhlsbüttel;10162;Schwerin;10184;Greifswald;10200;Emden;10224;Bremen;10270;Neuruppin;10338;Hannover;10361;Magdeburg;10393;Lindenberg;10400;Düsseldorf;10469;Leipzig/Halle;10488;Dresden-Klotzsche;10506;Nürburg-Barweiler;10548;Meiningen;10637;Frankfurt/Main;10685;Hof;10738;Stuttgart-Echterdingen;10763;Nürnberg;10788;Straubing;10852;Augsburg;10946;Kempten;) (Remarks from Volume-C: SYNOP)

GTS Bulletin: ISID05 EDZW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The ISID05 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level T1T2A1 (ISI): Intermediate synoptic observations from fixed land stations A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10161;Boltenhagen;10168;Goldberg;10180;Barth;10193;Ueckermünde;10210;Friesoythe-Altenoythe;10235;Soltau;10249;Boizenburg;10261;Seehausen;10267;Kyritz;10281;Trollenhagen;10282;Feldberg/Mecklenburg;10289;Grünow;10305;Lingen;10309;Ahaus;10312;Belm;) (Remarks from Volume-C: SYNOP)

GTS Bulletin: ISID08 EDZW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The ISID08 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level T1T2A1 (ISI): Intermediate synoptic observations from fixed land stations A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10564;Schleiz;10565;Osterfeld;10569;Plauen;10574;Carlsfeld;10577;Chemnitz;10579;Marienberg;10582;Zinnwald-Georgenfeld;10591;Lichtenhain-Mittelndorf;10615;Deuselbach;10628;Geisenheim;10635;Kleiner Feldberg/Taunus;10646;Neuhütten/Spessart;10648;Michelstadt-Vielbrunn;10658;Kissingen, Bad;10671;Lautertal-Oberlauter;10686;Wunsiedel-Schönbrunn;10704;Berus;10706;Tholey;10724;Weinbiet;10733;Waibstadt;10736;Mühlacker;10739;Stuttgart (Schnarrenberg);10747;Kaisersbach-Cronhütte;) (Remarks from Volume-C: SYNOP)

Multibeam bathymetry processed data (EM 1002 echosounder entire dataset) of RV MARIA S. MERIAN during cruise MSM51/1

Swath sonar bathymetry data used for that dataset was recorded during RV MARIA S. MERIAN cruise MSM51/1 using Kongsberg EM1002 multibeam echosounder. The cruise took place between 01.02.2016 and 27.02.2016 in the Baltic Sea. The cruise aimed to perform seismo- and hydroacoustic surveys, sampling of Holocene sediments and to investigate the water column wintertime mixing close to sea-ice limits. These surveys improved the understanding of variations in the ventilation of the deeper Baltic, considering not only external climate forcing but also the effects of postglacial sealevel rise and isostatic uplift [CSR]. CI Citation: Paul Wintersteller (seafloor-imaging@marum.de) as responsible party for bathymetry raw data ingest and approval. During the MSM51-1 cruise, the moonpooled KONGSBERG EM1002 multibeam echosounder (MBES) was utilized to perform bathymetric mapping in shallow depths. 111 beams are formed for each ping while the seafloor is detected using amplitude and phase information for each beam sounding. For further information on the system, consult https://www.km.kongsberg.com/. Postprocessing and products were conducted by the Seafloor-Imaging & Mapping group of MARUM/FB5, responsible person Paul Wintersteller (seafloor-imaging@marum.de). The open source software MB-System (Caress, D. W., and D. N. Chayes, MB-System: Mapping the Seafloor, https://www.mbari.org/products/research-software/mb-system, 2017) was utilized for this purpose. A sound velocity correction profile was applied to the MSM51-1 data; there were no further corrections for roll, pitch and heave applied during postprocessing. A tide correction was applied, based on the Oregon State University (OSU) tidal prediction software (OTPS) that is retrievable through MB-System. CTD measurements during the cruise were sufficient to represent the changes in the sound velocity throughout the study area. Using Mbeditviz, artefacts were cleaned manually. NetCDF (GMT) grids of the edited data as well as statistics were created with mbgrid. The published bathymetric EM1002 grid of the cruise MSM51-1 has a resolution of 15 m. No total propagated uncertainty (TPU) has been calculated to gather vertical or horizontal accuracy. A higher resolution is, at least partly, achievable. The grid extended with _num represents a raster dataset with the statistical number of beams/depths taken into account to create the depth of the cell. The extended _sd -grid contains the standard deviation for each cell. The DTMs projections are given in Geographic coordinate system Lat/Lon; Geodetic Datum: WGS84.

Multibeam bathymetry processed data (Kongsberg EM2040 working area dataset) of RV ALKOR during cruise AL652/2, MPA Fehmarnbelt, Baltic Sea

Swath sonar bathymetry data were acquired during cruise AL652-2 with the research vessel RV ALKOR using a hull-mounted Kongsberg EM2040 multibeam echosounder (MBES). The cruise took place between 25.05.2026 - 02.06.2026 in the German Baltic Sea. The approximate depth range of the mapped area is between 15-30m. To improve MBES data quality, sound velocity profile (SVP) casts were conducted in the vicinity of the mapped area prior to and after each survey using a Sound Velocity Probe. The data set includes data from an area called 'Oejet', which is a part of the Nature Conservation Area (NCA) 'Fehmarnbelt', located in the western Baltic Sea. The survey was carried out to support baseline habitat studies in this region. Data processing involved the application of a weak spline filter and manual cleaning to remove erroneous soundings, performed using Qimera (https://qps.nl/qimera/#). A bathymetric raster was generated and exported in GeoTIFF format with a spatial resolution of 0.25 m (negative depth values), referenced to WGS84 as the vertical datum and projected in UTM coordinates. The dataset consists of two surveys (Stations AL652-2_65, AL652-2_77) that were combined into a single final grid.

Multibeam bathymetry raw data (Kongsberg EM2040 entire dataset) of RV ALKOR during cruise AL644

Swath sonar bathymetry data recorded during AL644 on RV ALKOR using the hull-mounted Kongsberg EM2040 multibeam echosounder. The cruise took place between 17.11.2025 - 28.11.2025 in the German Baltic Sea. The approximate depth range of the mapped areas is between 10-30m. To improve MBES data quality, sound velocity profile (SVP) casts were conducted in the vicinity of the mapped area prior to and after each survey using a CTD. The data set includes data from the 'Adlergrund' (ADG), located within the Pommeranian Bay/Rønne Bank Nature Conservation Area (NCA), from the 'Kadet Trench ('KDR') NCA and the Fehmarn Belt ('FB') NCA. The mapping has been conducted for baseline habitat studies in the area.

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