Ocean Lagrangian Trajectories (OLTraj): Lagrangian analysis for non-expert users

This is the final version. Available on open access from F1000Research via the DOI in this record. Data availability: Underlying data The original Copernicus data (January 1998 - December 2019) is available from: https://resources.marine.copernicus.eu/product-detail/SEALEVEL_GLO_PHY_L4_REP_OBSERVATIONS_008_047/INFORMATION CEDA: Global ocean Lagrangian trajectories based on AVISO velocities, v2.2. http://doi.org/10.5285/5c2b70d069cb467ab73e80b84c3e395a This dataset contains the following underlying data: Daily files from 1998-01-01 to 2019-12-31. This dataset is available under the terms of the Creative Commons Attribution 4.0 International license (CC-BY 4.0).Software availability: Source code to compute OLTraj available from: https://github.com/grgdll/OLTraj Archived source code at time of publication: https://doi.org/10.5281/zenodo.5082983 The repository for the examples is: https://github.com/grgdll/OLTraj_examples Archived source code at time of publication: https://doi.org/10.5281/zenodo.5518531Lagrangian analysis is becoming increasingly important to better understand the ocean's biological and biogeochemical cycles. Yet, biologists and chemists often lack the technical skills required to set up such analyses. Here, we present a new product of pre-computed ocean Lagrangian trajectories (OLTraj) targeting non-expert users, and demonstrate how to use it by means of worked examples. OLTraj is based on satellite-derived geostrophic currents, which allows one to directly compare it with other in-situ or satellite products. We anticipate that OLTraj will foster a new interest in Lagrangian applications in ocean biology and biogeochemistry.European Union Horizon 2020Natural Environment Research Council (NERC