Airborne gravimetry with quantum technology: observations from Iceland and Greenland

Abstract. We report on the availability of data from an airborne gravity campaign in Iceland and Greenland conducted during June and July 2023. The dataset includes observations from a platform-stabilised gravimeter based on cold-atom quantum technology and a strapdown gravimeter based on classical technology. The data are available at three different levels of processing, making them relevant to users interested in working with “quantum” and “hybrid” data as well as users interested in geophysical studies. The paper describes the data processing applied to derive the various levels of data and presents an evaluation of the accuracy of the data. This evaluation indicates an accuracy of 1–2 mGal for both sensors, depending on the roughness of the gravity field. Although the two technologies lead to similar performance, further analysis indicates that the error characteristics are different and that the final estimates would benefit from a combination (data available at https://doi.org/10.57780/esa-58c58c5; see Jensen et al., 2024).