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

CO2 fluxes (i.e., negative emissions) for chem_opt=17

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
I have an external data set of biogenic CO2 fluxes which I would like to use together with chem_opt=17.

As far as i understand the user guide, I would use emiss_opt=16 and emiss_inpt_opt=16.

Now the question is: naturally, the fluxes I have are both positive and negative, depending on time-of-day (due to respiration, photosynthesis, ...). Can WRF/Chem handle these "negative emissions" correctly? Is there anything I have to consider?