# Compute anthropogenic fraction from CAMS speciated AOD

**URL:** <https://forum.ecmwf.int/t/compute-anthropogenic-fraction-from-cams-speciated-aod/1611>\
**Category:** CAMS - Datasets and Usage\
**Tags:** cams, cams\_global\_forecast\
**Created:** [12 October 2023 03:29 UTC](https://forum.ecmwf.int/t/compute-anthropogenic-fraction-from-cams-speciated-aod/1611 "2023-10-12T03:29:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Harshbardhan\_Kumar](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/h/59ef9b/32.png) [@Harshbardhan\_Kumar](https://forum.ecmwf.int/u/Harshbardhan_Kumar)\
**Post date:** [12 October 2023 03:29 UTC](https://forum.ecmwf.int/t/compute-anthropogenic-fraction-from-cams-speciated-aod/1611/1 "2023-10-12T03:29:41Z")

</div>

Hello!

I have attached a Python script here for the computation of&nbsp; **F\_anthropogenic** over the Indian oceanic region (following flow diagram of section 3 in **Bellouin et al., 2013 ACP** ) using CAMS speciated aerosol optical depth daily data ( that includes Black carbon, organic matter, sea-salt, and sulphate) and wind speed at 10 meters.&nbsp;

I would be grateful if anyone could take a moment to review it and suggest correction if any...Thanks

Harshbardhan

(see the attached files below)

&nbsp;[f\_anthro\_for\_2021.png](https://confluence.ecmwf.int/download/attachments/358878041/f_anthro_for_2021.png?version=1&modificationDate=1697081813377&api=v2)

[MACC\_anthro.py](https://confluence.ecmwf.int/download/attachments/358878041/MACC_anthro.py?version=1&modificationDate=1697081557384&api=v2)

&nbsp;[N. Bellouin 2013-MACC Renalysis.pdf](https://confluence.ecmwf.int/download/attachments/358878041/N.%20Bellouin%202013-MACC%20Renalysis.pdf?version=1&modificationDate=1697081584251&api=v2)