Anthropogenic input files units

[catalina poraicu]

Hello all,

I was wondering if anyone knows what units the anthropogenic input files need to have for the emissions? I have been using EDGARV4.3.2, which has units of tons/year. I am now trying to use a different inventory for the anthropogenic emissions, but the units are different. What I understand from the README file is that the output of the anthro_emis preprocessor will have units of moles per kilometer squared per hour for the gas species, and micro gram per meter squared per second for the aerosol species. I was wondering if the emissions have to have a specific unit, or if the preprocessor somehow accounts for this? Otherwise, if I simply change the input files with different units, the calculation will be completely wrong.

Any guidence is appreciated! Thanks in advance.

Catalina

[catalina poraicu]

EDIT: I saw a similar post from a few months ago, but it had no reply. Sorry to double post!

[Stacy Walters]

Catalina,

The anthro_emis utility attempts to set the incoming emission units by reading the source emission variable "units" attribute.

The upper case translation of the units attribute is handled as:

(a)  KG M-2 S-1, KG/M2/S, KG/M^2/S are automatically converted to the proper WRF emission units

(b)  MOLECULES/CM2/S, MOLECULES/CM^2/S, MOLECULES CM-2 S-1 are automatically converted

       to the proper WRF emission units

(c).  all other unit attributes, including the case of no unit attribute, default to KG/M2/S

Stacy

[catalina poraicu]

Thank you very much Stacy! This is the information I was looking for.

[catalina poraicu]

Hi Stacy,

So do the gas species have to be KG M-2 S-1 (or other formats), and then the aerosol species have to be in MOLECULES/CM2/S (or other formats) for this to work, or can the aerosol species and the gas species have the same units?

On Tuesday, July 28, 2020 at 9:57:10 PM UTC+2, Stacy Walters wrote: