The Onsala Tide Gauge Station: Experiences from the first four years of operation
Paper in proceeding, 2019
have been used during dierent time periods in order to further assess the quality of the acquired sea level data.
Here we compare the four ocial sensors and the laser sensor which was installed in April 2016. The expected accuracy (one standard deviation) for all of these sensors is approximately 3 mm, according to the datasheet specifications. Results from the first four years of operations are used to assess and estimate the actual accuracies by means of comparisons between the sensors. We observe typical biases over time scales of months of up to 10 mm. Biases are caused by uncertainties of
the reference level of the sensor, the density of the water for the bubblers, multipath eects for the radar, and nonlinearities with temperature for the laser. The observed monthly standard deviation between the sensors in the well vary between 2 mm and 6 mm, which is roughly consistent with the data sheet specifications.
Sea level
Tide gauge station
Author
Gunnar Elgered
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Jonas Wahlbom
App-pharm Sweden AB
Lars Wennerbäck
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Lars Pettersson
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Rüdiger Haas
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Proceedings of the 24th European VLBI Group for Geodesy and Astrometry Working Meeting
75-79
Las Palmas de Gran Canaria, Spain,
Driving Forces
Sustainable development
Roots
Basic sciences
Infrastructure
Onsala Space Observatory
Subject Categories
Earth and Related Environmental Sciences
Oceanography, Hydrology, Water Resources
Climate Research
Other Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.7419/162.08.2019