24-hour HYSPLIT-STILT back-trajectories initialized at Storm Peak Laboratory, Colorado from April 1, 2022 to May 1, 2022

This dataset was compiled to accompany the manuscript Lee et al., titled "Elevated Tropospheric Iodine over the Central Continental United States: Is Iodine a Major Oxidant of Atmospheric Mercury?", submitted to AGU Geophysical Research Letters.

24-hour HYSPLIT-STILT back trajectories were initialized at Storm Peak Laboratory, Colorado (40.455 degrees North, 106.744 degrees West) every three hours from April 1, 2022 to May 1, 2022 at initial altitudes of 5, 2000, 4000, 6000, 8000, and 10000 meters above ground level. In the model, Storm Peak Laboratory is 2890 meters above sea level (3209.848 meters above sea level in reality). One thousand back trajectories were initialized at each time-altitude pair, then averaged in three dimensions (latitude, longitude, altitude) to generate a single back trajectory for each time-altitude pair.

Each file is named using the following convention: "STILT_StormPeakLaboratory_yyyymmdd_HHMMutc.txt", where yyyy is the four-digit year, mm is the two-digit month, dd is the two-digit day, HH is the two-digit hour, and MM is the two-digit minute. The date and time in the filename denote the back-trajectory initialization time (UTC).