How are CO2 emissions physically measured country by country?

Question

With all the news these days about global warming I am curious as to how e.g. USA and China's CO2 emissions are measured on a scientific/mathematical basis.

Answer 1

You break the problem into pieces. They know how many cars going what annual average miles, how many power plants of each type and size, etc. And the amount of CO2 each car and each power plant, etc. emits. Then they calculate the total.

To Johnnie. The graph below is plants trying to take care of CO2. The tiny teeth are plants, which decrease the CO2 in summer, but it increases in winter. The big trend up is us burning fossil fuels.

The plants are losing.

http://scrippsco2.ucsd.edu/graphics_gallery/mauna_loa_record/mlo_record.html

Many scientists have measured the same curve in many places.

Answer 2

Your CO2 data is in error . The plants have taken care of most of it . The actual measurements are very low . Looks like they don't know how to measure CO2. Co2 is a very heavy gas it will be right on the ground. It is heavy enough that CO2 is used as a fire extinguisher.

Answer 3

Did you physically measure how much CO2 you emitted today? If you didn't then how can you expect an entire country tod do the same?

Answer 4

Take a look here;

http://www.nef.org.uk/energyadvice/co2emissionsctry.htm