https://lifehacker.com/this-map-shows-the-biggest-climate-polluters-in-your-ar-1849787582
https://climatetrace.org/map
A quick click around suggests that in CA in any case
cities: airports and refineries
rural: landfills
I live in a clear spot with a 40-mile radius. Obviously they aren't tracking agricultural chemicals.
Here it's got the metro area traffic, big steel mills, oil refineries, landfills. Missing are the power plants.
Missing some of the precious metals mines here in South Africa.
US: Your Neighborhood's Emissions - The New York Times
https://www.nytimes.com/2022/12/16/climate/my-local-emissions.html