An updated version of the GRACE Follow-On density and crosswind dataset has been published on the Swarm dissemination server under the following folders:

• Density data (covering from 29 May 2018 to 31 May 2024): /Multimission/GRACE-FO/DNS/Sat_1
• Crosswind data (covering from 1 January 2023 to 31 May 2024): /Multimission/GRACE-FO/WND/Sat_1

The datasets have been generated with version 0003 using an improved accelerometer data calibration obtained by including data collected during solar maximum and by updating gravity field models. This update changed the density by about 10% in the period 2018 – 2020 when the signal was extremely small, meaning that tiny changes in the bias had such a significant effect.

The upgrade significantly improved the density data as suggested by the better agreement with the DTM2020 thermosphere model.

These data products have been processed within the TOLEOS (Thermosphere Observations from Low-Earth Orbiting Satellites) Project. For more information the TOLEOS Product Definition Document is available for download.