Description: During the RV Heincke cruise HE650 in the German Bight, the autonomous surface vehicle HALOBATES was deployed to obtain high-resolution measurements of key climate variables, including sea surface temperature (SST) and salinity (SSS). The platform sampled the upper ocean across five depths, extending from the near-surface layer (NSL; approximately 30–100 cm depth) to the sea-surface microlayer (SML), which occupies the uppermost millimetres of the ocean. Temperature and conductivity, from which salinity was derived, were measured using conductivity–temperature–depth (CTD) sensors integrated into HALOBATES' flow-through system. Additional temperature sensors mounted beneath the catamaran provided in situ observations at six NSL depths. Discrete water samples were used to calibrate the salinity measurements and account for potential sensor offsets. Meteorological conditions were simultaneously monitored using two data loggers equipped with meteorological stations installed on the catamaran. HALOBATES operated continuously during the deployment on 6th November 2024.
Global identifier:
Doi(
"10.1594/PANGAEA.997183",
)
DataMeasurements(
DataMeasurements {
domain: Unspecified,
station: None,
measured_variables: [
"Conductivity",
"Country",
"DATE/TIME",
"Dew/frost point",
"Dew/frost point maximum",
"Dew/frost point, minimum",
"Event label",
"Humidity, relative",
"Humidity, relative, maximum",
"Humidity, relative, minimum",
"LATITUDE",
"LONGITUDE",
"Location",
"Pressure, atmospheric",
"Pressure, atmospheric, maximum",
"Pressure, atmospheric, minimum",
"Pressure, water",
"Quality flag",
"Salinity",
"Salinity, absolute",
"Short-wave downward (GLOBAL) radiation",
"Short-wave downward (GLOBAL) radiation, maximum",
"Short-wave downward (GLOBAL) radiation, minimum",
"Temperature, air",
"Temperature, air, maximum",
"Temperature, air, minimum",
"Temperature, technical",
"Temperature, water",
"Wind direction",
"Wind direction, maximum",
"Wind direction, minimum",
"Wind direction, true",
"Wind speed",
"Wind speed at 10 m height",
"Wind speed at 2 m height",
"Wind speed, maximum",
"Wind speed, minimum",
],
methods: [
"CR1000X Datalaogger, Campbell Scientific",
"CTD, Idronaut, Ocean Seven 310",
"GPS, Garmin, 16s",
"Hygro-Thermo-Transmitter-compact, RS485, Thies Clima",
"Pyranometer, Kipp & Zonen, SMP6",
"T.D, RBR, RBRduet³",
"Temperature Sensor, RBR Solo³",
"UV-A sensor, Apogee Instruments, SU-200-SS Series",
"Weather station, Campbell Scientific, METSENS550",
"Weather station, Thies Clima, Climate Sensor US (CUS)",
],
},
)
Comment: This data collection was supported by the Carl von Ossietzky University of Oldenburg. The dataset comprises observations acquired by the autonomous surface vehicle HALOBATES during RV Heincke cruise HE650 in the German Bight, North Sea, on 6th November 2024. HALOBATES obtained conductivity and temperature measurements at multiple depths using CTD sensors integrated into a pumped flow-through system. Measurements of the sea-surface microlayer (SML), representing the uppermost millimetre of the ocean, were obtained using six partially submerged rotating glass discs, from which water was pumped to a dedicated CTD. Water from the near surface sampling depths was collected through intake tubes mounted on a ladder at the bow of the catamaran, providing measurements at depths of 30, 40, 60 and 100 cm. Meteorological conditions were monitored by onboard weather stations, which measured variables including wind speed, air temperature and relative humidity. Two data loggers simultaneously recorded the meteorological observations and the GPS position of HALOBATES. The vehicle supported both manual operation and autonomous navigation. During station-based measurements, it could either drift passively with surface currents when the autopilot was disengaged or follow predetermined trajectories under autopilot control. Quality-control flags ranging from 0 to 4 are provided, with their definitions documented in the metadata of the main data file. Observations assigned flags 1 and 2 are considered suitable for scientific use.
Tags: Meerestemperatur ? Globalstrahlung ? Sensor ? Wassertemperatur ? Windgeschwindigkeit ? Geografische Koordinaten ? Lufttemperatur ? Temperatur ? Salzgehalt ? Wasserqualität ? Wasserprobe ? Meeresgewässer ? Deutsche Bucht ? Daten ? Nordsee ? autonomous surface vehicle ? essential climate variables ? field observations ? near-surface layer ? sea-surface microlayer ? ship-based ? skin layer ?
Region: North Sea
Bounding boxes: 7.95° .. 8.0159° x 54.1755° .. 54.187°
License: Creative Commons Namensnennung 4.0
Language: Englisch/English
Issued: 2026-09-10
Modified: 2026-09-10
Last harvest: 23.09.2026 01:53
Time ranges: 2024-11-06 - 2024-11-06
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