Atmospheric modelling

We can in principle calculate an atmospheric model for a meteorite fall case anywhere on Earth using WRF modelling.

Need a model for a particular area?

First check that the area and time of interest is not already available at desertfireballnetwork.github.io/freo_doctor.

If not, here are the steps:

Letters, numbers, underscores, and dashes only. No spaces.

North positive, decimal degrees. Range: −90 to 90.

East positive, decimal degrees. Range: −180 to 180.

ISO 8601 UTC, rounded to the nearest second.

Data Products Documentation

Output data products only cover up to ~31 km altitudes.

There are two types of output data products.

WRF output (NetCDF)

See the WRF documentation here.

These native wrfout NetCDF files (can be read/exported using this code as example).

Vertical Profiles (CSV)

Vertical profiles extracted at the time and coordinates provided. Simple CSV file, all SI units:

Column Name Format Unit Comment
height   metre Height (Above Sea Level)
temperature   Kelvin  
pressure   Pascal  
relative_humidity %   atmospheric relative Humidity (0-100%)
wind_horizontal   m/s Magnitude of the wind vector in the horizontal plane
wind_direction decimal degrees East of North direction the wind is coming from
wind_east   m/s Easterly component of the wind
wind_north   m/s Northerly component of the wind
wind_up   m/s Upwards component of the wind
density   kg/m³ Density of the atmosphere

Notes: for meteorite dark flight puposes, using the vertical profiles is usually fine. However if you have a shallow entry, where your meteorite wanders more than 10 km from from the extraction point, we strongly recommand you use the use the full 4D data products.

General Notes