Carl von Ossietzky Universität Oldenburg, Germany
High-resolution measurements of essential climate variables in the North Sea from the autonomous surface vehicle HALOBATES during RV Heincke cruise HE614
Data Publisher for Earth & Environmental Science
The autonomous surface vehicle HALOBATES measured Essential Climate Variables (ECV), such as sea surface temperature (SST) and salinity (SSS), during the RV Heincke cruise HE614 in the German Bight. HALOBATES captured the SST and SSS at seven depths with a high vertical resolution of about 10 cm, from the near-surface layer (NSL) (between 30 and 100 cm) and the sea surface microlayer (SML) (upper millimeter). Conductivity, temperature, and depth (CTD) sensors measured temperature and conductivity (for salinity calculation) via a flow-through system on HALOBATES. Additional temperature sensors were mounted underneath the catamaran to measure in-situ temperature in situ at six depths in the NSL. Salinity was corrected with discrete water samples to remove biases between the sensors. Two data loggers with several meteorological stations on the catamaran captured important weather variables during operation time. The surfactant concentration was measured from discrete samples of SML and 100 cm depth. HALOBATES was operated between 01 March 2023 and 22 March 2023.
HALOBATES: An Autonomous Surface Vehicle for High-Resolution Mapping of the Sea Surface Microlayer and Near-Surface Layer on Essential Climate Variables
Journal of Atmospheric and Oceanic Technology
U10; True Wind Speed from Campbell datalogger scaled to 10 meters
spectral range (0.3-3) x 10E-6 m, sensors mounted on the ship
spectral range (4.5-42) x 10E-6 m, sensors mounted on the ship
Short-wave downward (GLOBAL) radiation, minimum
at a height of 200 cm above the sea surface
Short-wave downward (GLOBAL) radiation, maximum
Hygro-Thermo-Transmitter-compact, RS485, Thies Clima
sensor 2, at a height of 150 cm above the sea surface
sensor 3, at a height of 50 cm above the sea surface
sensor 4, at a height of 100 cm above the sea surface
sensor 5, at a height of 200 cm above the sea surface
Weather station, Thies Clima, Climate Sensor US (CUS)
CUS, at a height of 200 cm above the sea surface
average; spectral range (0.285-2.8) x 10E-6 m; at a height of 200 cm above the sea surface
average internal temperate of the SMP6 at a height of 200 cm above the sea surface
sensor 2, at a height of 150 cm above the sea surface, average
sensor 3, at a height of 50 cm above the sea surface, average
sensor 4, at a height of 100 cm above the sea surface, average
sensor 5, at a height of 200 cm above the sea surface, average
CUS, at a height of 200 cm above the sea surface, average
Optical Laser-based distrometer, Thies Clima, 5.4110.xx.x00
autonomous surface vehicle; essential climate variables; near sea surface; North Sea; sea surface microlayer; skin layer