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GTS Bulletin: ISND74 AMDW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The ISND74 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 (Remarks from Volume-C: NATIONAL AUTOMATIC SYNOP)

GTS Bulletin: ISND83 AMDN - Observational data (Binary coded) - BUFR (details are described in the abstract)

The ISND83 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 (Remarks from Volume-C: NATIONAL AUTOMATIC SYNOP)

GTS Bulletin: ISND77 AMDW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The ISND77 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 (Remarks from Volume-C: NATIONAL AUTOMATIC SYNOP)

GTS Bulletin: ISMI01 EDZW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The ISMI01 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level T1T2A1 (ISM): Main synoptic observations from fixed land stations A2 (I): 0° - 90°W southern hemisphere(The bulletin collects reports from stations: 89002;GEORG VON NEUMAYER;89011;89047;) (Remarks from Volume-C: SYNOP)

Untersuchungen des Tagesgangs verschiedener Spurengase mit Hilfe der solaren Absorptionsspektroskopie im infraroten Spektralbereich im tropischen Westpazifik (TROPAC)

Der Ozean im Westpazifik ist mit Temperaturen von ganzjährig 30°C der wärmste Ozean der Welt. Im tropischen Westpazifik ist die Lufttemperatur der Grenzschicht weltweit am höchsten und die Ozonkonzentration am niedrigsten. Aufgrund der allgemeinen Advektion der Luftmassen in der unteren und mittleren Troposphäre aus dem Osten durch die Walker-Zirkulation über den Pazifik befindet sich die Luft über dem tropischen Westpazifik für längere Zeit in einer sauberen, warmen und feuchten Umgebung. Der Abbau von reaktiven Sauerstoff- und Ozonvorläufern wie NOx findet daher länger als anderswo in den Tropen, was zu sehr niedrigen Ozonkonzentrationen führte. Dies erhöht die Lebensdauer von kurzlebigen biogenen und anthropogenen Spurengasen. Darüber hinaus begünstigen hohe Meeresoberflächentemperaturen eine starke Konvektion im tropischen Westpazifik, was zu niedrigen Ozonmischungsverhältnissen in den konvektiven Ausflussgebieten in der oberen Troposphäre führen kann. Der Warmpool im Westpazifik ist auch eine wichtige Quellregion für stratosphärische Luft. Daher fallen die Region, in der die Lebensdauer kurzlebiger Spurengase erhöht ist, und die Quellregion der stratosphärischen Luft zusammen. Somit bestimmt die Zusammensetzung der troposphärischen Atmosphäre in dieser Region in hohem Maße auch die globale stratosphärische Zusammensetzung.Ozon ist aufgrund von Rückkopplungsprozessen zwischen Temperatur, Dynamik und Ozon ein wichtiges Spurengas in der Klimaforschung. Da der Warmpool im Westpazifik die Hauptquellenregion für stratosphärische Luft ist, ist die Kenntnis von Ozon und anderen kurzlebigen Spurengasen auch wichtig, um den Transport von Spurengasen in die Stratosphäre zu verstehen.Ziel unseres Projektes ist die Messung des Tagesgangs von Ozon und anderen Spurengasen mit Hilfe der hochauflösenden solaren Absorptions-FTIR-Spektroskopie. Die Messungen liefern die Gesamtsäulendichten von bis zu 20 Spurengasen. Für einige Spurengase erlaubt die Analyse der Spektrallinienform die Ableitung der Konzentrationsprofile in bis zu etwa vier atmosphärischen Höhenschichten. Ergänzt werden die Beobachtungen durch Ozonballonsondierungen, kontinuierliche Messungen der UV-Strahlung, und Modellrechnungen mit einem Chemie-Transport-Modell. Die Messungen sind für den Zeitraum August bis Oktober 2022 geplant, die Auswertung und Interpretation von November 2022 bis Januar 2023.

Multibeam bathymetry processed data (EM 1002 echosounder entire dataset) of RV MARIA S. MERIAN during cruise MSM62/2

Swath sonar bathymetry data used for that dataset was recorded during RV MARIA S. MERIAN cruise MSM62/2 using Kongsberg EM1002 multibeam echosounder. The cruise took place between 23.03.2017 and 27.03.2017 in the Baltic Sea. The cruise aimed to investigate the impact of the Littorina transgression on the inflow of saline waters into the western Baltic and assessed the potential for future diminution of ventilation in the central and northern deeper basins due to isostatic uplift [CSR]. CI Citation: Paul Wintersteller (seafloor-imaging@marum.de) as responsible party for bathymetry raw data ingest and approval. During the MSM62/2 cruise, the moonpooled KONGSBERG EM1002 multibeam echosounder (MBES) was utilized to perform bathymetric mapping in shallow depths. The echosounder has a curved transducer in which 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 MSM62/2 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 MSM62/2 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 AL632, Adlergrund, Baltic Sea

Swath sonar bathymetry data used for that dataset was recorded during RV ALKOR during cruise AL632 using Kongsberg EM2040 multibeam echosounder. The cruise took place between 06.05.2025 - 13.05.2025 in the German Baltic Sea. The approximate average depth of the mapped area is around 18m. To enhance MBES data accuracy, sound velocity profile (SVP) casts were conducted in the vicinity of the working area prior to and after each survey using a CTD. In the case of the Adlergrund_West area the SVP after the survey was applied via the processing software Qimera (https://qps.nl/qimera/#). Data were manually edited for false measurements using 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. Two working areas are located within (Adlergrund West) and adjacent to (Reference Area) the Marine Protected Area Adlergrund. 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 PS151, Atlantic Ocean

Multibeam data were collected during RV Polarstern cruise PS151 (2025-11-13 to 2025-12-12). 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 CTDs and World Ocean Atlas 23 (https://www.ncei.noaa.gov/archive/accession/NCEI-WOA23), 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 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.

Multibeam bathymetry raw data (Atlas Hydrosweep DS 3 echo sounder entire dataset) of RV POLARSTERN during cruise PS151

Multibeam data were collected with RV Polarstern along the route of cruise PS151 and data acquisition was almost continuously monitored during the survey. Multibeam sonar system was Teledyne/Atlas Hydrosweep DS3. SVPs were retrieved from CTD data and synthetic profiles from World Ocean Atlas 23. SVPs were processed with HydrOffice SoundSpeedManager (https://www.hydroffice.org/soundspeed/main) and extended with World Ocean Atlas 23 (https://www.ncei.noaa.gov/archive/accession/NCEI-WOA23). SVP data were applied during acquisition. Multibeam data are unprocessed and may contain outliers and blunders and should not be used for grid calculations and charting projects without further editing. The raw multibeam sonar data in Teledyne Reson multibeam processing format (.s7k) were recorded with Teledyne PDS software. Raw data files can be processed using software packages like CARIS HIPS/SIPS. For updated vessel configuration files check further details.

GTS Bulletin: ISND40 UMRR - Observational data (Binary coded) - BUFR (details are described in the abstract)

The ISND40 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. 0100, 0200, 0400, 0500, ... UTC) A2 (D): 90°E - 0° northern hemisphere (Remarks from Volume-C: NilReason)

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