http://bolin.su.se/data/oden-ao-2018-trajectories-eth-1 Heini Wernli Bolin Centre Database 2022 Datafile Atmosphere Circulation Trajectories Arctic Ocean Arctic Ocean 2018 AO18 AO2018 MOCCHA Icebreaker Oden Earth science > Atmosphere Heini Wernli 2022-04-07T15:14:12+00:00 English 1 Backward trajectories from the ship track were calculated with LAGRANTO and ECMWF operational analysis fields at ETH Zurich for the MOCCHA campaign in summer 2018. Hourly trajectory files (each 10 days backward calculations) and one readme-file are provided in one zip-folder. The hourly trajectory files (lsl-data files) are plain text files. Each block within the lsl-file contains one trajectory for various pressure levels. The readme-file gives details on the provided variables such as time, longitude, latitude and pressure of each trajectory (including units). Further details on the variables are provided at the [ECMWF UERRA archive](https://confluence.ecmwf.int/display/UER/Parameters). For more details see Karlsson et al. (2022) and Baccarini et al. (2020). Input data for the calculations were collected during the Arctic Ocean 2018 expedition on board the Swedish icebreaker (I/B) Oden, which was organized by the [Swedish Polar Research Secretariat](https://polarforskningsportalen.se/en/arctic/expeditions/arctic-ocean-2018). Ship track data from the expedition is available in the [Navigation, meteorological and surface seawater data from the Arctic Ocean 2018 expedition](https://bolin.su.se/data/oden-ao-2018-navigation-1).