FLEXTRA back-trajectories for Pha Din, Viet Nam, atmospheric observatory

FLEXTRA back-trajectories for Pha Din, Viet Nam, atmospheric observatory FLEXTRA is an atmospheric trajectory model available from: https://www.flexpart.eu/wiki/FtAbout The period covered is March and April 2015.<br> A new trajectory was initialised every 4 hours and at different altitudes above model ground (80 m, 420 m, 548 m, 830 m, 1670 m, 2920 m) and at an absolute height above sea level (5500 m).<br> Each back-trajectory was integrated for 10 days backward in time.<br> FLEXTRA was driven with operational analysis/forecast data from the ECMWF IFS operational chain. Input data were available 3-hourly with a horizontal resolution of 1°x1°. Trajectory files (*.gz) are organised by month and for different initial altitudes above ground.<br> The file format is compressed ASCII with data for each trajectory being given in tabulated sections.<br> A sample R code (load.flextra.file.R) for reading the ASCII files is included for reference. For further questions please contact: [e-mail]