[PULL REQUEST] NEI2016 emissions #920
Conversation
Barron Henderson, Lyssa Freese, and Patrick Campbell provided updated EPA NEI2016 emissions for incorporation into GEOS-Chem. These are to replace the NEI2011 emissions currently in HEMCO_Config.rc. This inventory (denoted NEI2016_MONMEAN) is off by default in favor of the CEDS v2 global anthropogenic emissions which extend to 2019. For this inventory, the text from the EPA_Config.rc file provided by Barron has been copied into HEMCO_Config.rc. Fixes made to that text include: (1) adding entries for SOAP and pFe and (2) removing unnecessary scale factors 256 and 256 for BCPO and OCPO. NOTE: Currently mask 1007 (CONUS_MASK) is used for the NEI2016 entries, but there are fields named for "can" and "mex" containing emissions over Canada and Mexico. We have added a note to HEMCO_Config.rc instructing users to revert to the old mask files if they would like to use the emissions over Canada and Mexico. For more details, see feature request #547 Signed-off-by: Melissa Sulprizio <mpayer@seas.harvard.edu>
Annual scaling factors for NEI2016 emissions were computed from the EPA Trends Report for Tier 1 CAPS (obtained 21 Sep 2021). Calculations can be viewed in ExtData/HEMCO/NEI2016/v2021-06/national_tier1_caps+HEMCOscaling.xlsx. Values were computed from the "Total without wildfires" field. NH3 and PM2.5 only had annual emission totals without wildfires for 2002-2020, while the remaining species had annual values for 1990-2020. We include only 2002-2020 scale factors here so all species are consistent. Cl2 and HCl were not included in the Tier 1 CAPS file, so they are not scaled to other years and are only applied for 2016. Signed-off-by: Melissa Sulprizio <mpayer@seas.harvard.edu>
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This all looks straightforward. Will have to test with NEI emissions turned on but it looks like a straight-up swap of NEI2016 for NEI2011.
Question: why does Ordonez_Ionocarb now use a hierarchy of 1 instead of 50? Is it because the EPA2016 does not have the same emissions? I am sure it is OK but just wanted to know.
This appeared to be a typo in the original HEMCO_Config.rc and/or isn't needed anymore. This fix came in with the HEMCO_Config.rc file provided by Barron and Lyssa. This only applies to the I believe the hierarchy of |
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Thanks @msulprizio for the explanation. Good to merge. |
This PR corresponds to Feature Request #547.
This inventory will be optional (off by default) and CEDS emissions (1750-2019) will remain the default anthropogenic emissions inventory globally.