Scheduled Downtime
On Friday 21 April 2023 @ 5pm MT, this website will be down for maintenance and expected to return online the morning of 24 April 2023 at the latest

Tutorial exercice 3 (US emissions)

This post was from a previous version of the WRF&MPAS-A Support Forum. New replies have been disabled and if you have follow up questions related to this post, then please start a new thread from the forum home page.


New member
Dear all,

I am currently trying to run all the tutorial exercices available for WRF-Chem (available at
In exercice 3, "US Emission", I can't access the input data to run the exercice, because when I click the link to these files there's an error message saying:
"You don't have permission to access /wrf/wrf-chem/tutorialexercises/exe003/Run_emiss04/ on this server."

Can someone explain me what is happening?

Best regards,
Rui Silva