The Svalbard Marginal Ice Zone Experiment 2024

A network of wave, sea-ice drift, and temperature observations

OpenMetBuoy + Thermistors

The OpenMetBuoy is an open-source drifter originally developed to measure waves in sea-ice. An extended version is used in the SvalMIZ 2024 experiment to measure wave, drifter-position, and temperature. Hourly significant wave height, 30-minute temperature (1m height, surface layer (+10cm/0cm), snow-ice interface), and sea-ice drift (hourly GPS)i will be transmitted via Iridium in real-time. The buoys will be deployed on sea-ice and are designed to operate later consistently in the open ocean to measure wave, sea surface temperature and ocean surface drift.

Thermistor sensitivities

Each temperature sensor is calibrated against a PT100 sensor and we yield a final accuracy ~0.1K. Sensisitvity analysis of 3D-printed radiation shield vs. solar radiation in snow conditions is analysed by using aditional CNR-4 radiometer measurements. In addition, an on-site sensitivity analysis of sea-ice surface temperature with infrared sensors will be conducted.

Spatial distributed network

A spatial distributed network of 30 to 35 OpenMetBuoys will be deployed south-east of Svalbard (alternatively north-east of Svalbard depending on weather and sea-ice). The research cruise will take place from April 4 to April 21 2024 with the Coast Guard Vessel - KV Svalbard. The distances between the buoys will initially be about 20 to 50 km. The figure shows the sea-ice conditions 23 Feb. 2024 and an illustration of the planned initial locations.

 

Data availabilty & model and satellite product intercomparisons

The positions of the OpenMetBuoys and some of the measured parameters can be followed in real-time with the viewer of the Ocean Virtual Laboratory. An additional dedicated link to a project viewer will be made available soon, it will also include a 10-day sea-ice forecasts of a newly deep-neural network sea-ice forecasting system. The calibrated and quality controlled data will be made publicly available as soon as possible. The SvalMIZ 2024 experiment is specifically made for validation and understanding of coupled atmosphere - wave - sea-ice (forecast) models and remote sensing products. It is planed to collect and intercompare model forecasts and remote sensing products from various forecasting centers and providers in order to advance on the prediction of Marginal Ice Zone sea-ice, wave and atmosphere dyamics.