Discrepancy between Emissions Queries and the Set Net-Zero Target about gcam-core

[Kasra9494]

Thank you so much @pkyle.
You are right. The difference is basically equal to the CO2 emissions by resource production.
I'm very grateful for the help.

[pkyle]

The CO2 emissions by sector query is only reporting emissions from sectors, so it misses any emissions from primary energy resource production, which includes fugitive CO2 from oil and gas production (venting of CO2, flaring of associated natural gas), and in Canada probably also includes the energy use in oil sands production. CO2 emissions by region is more comprehensive. You can confirm that this is the source of the difference by querying CO2 emissions by resource production
I don't know why the (No Bio) one goes negative towards the end of the century, but I don't recommend using that query for reporting whole-region emissions, because the additional calculations that it's doing, to assign the negative emissions of biomass production to the sectors that use the biomass and derived fuels, aren't being used anyway when all sectors are being added up.