Lagrangian parcel trajectories are widely used in the atmospheric sciences, for instance, to identify flow structures in extratropical cyclones (e.g., warm conveyor belts), long-range transport pathways of moisture, or to study the physical processes underlying the formation of sea surface temperature, salinity or potential vorticity anomalies. On a more local scale, trajectories have recently also attained a lot of interest in mountain meteorology, e.g., in studying the pathway and warming of air parcels during foehn conditions.
It is used to compute air-parcel trajectories typically based on hourly ERA5 data on a regular lat/lon grid. This version can also handle ERA-Interim data, or operational ECMWF analysis and forecast products.
This is the version used to compute air-parcel trajectories based on the output of the COSMO and ICON model. Additionally, an online version has been implemented by Miltenberger et al. (2013) into the COSMO model.
It is used to compute air-parcel trajectories typically based on CESM (Community Earth System Model) climate simulations.
This version of Lagranto allows the user to calculate trajectories based on ERA5 and operational ECMWF products without having to install Lagranto locally on a computer. The user can submit trajectory jobs to a computing queue at ETH, where the actual computation will be done and the result being made available on an FTP server