01.

Change of CO2 over time

Change of CO2 over time Global distribution and variation of mid-tropospheric carbon dioxide concentrations observed by the Atmospheric Infrared Sounder (AIRS) aboard NASA's Aqua spacecraft over a 20-year time span. Carbon dioxide continues to increase over time, as shown by the change in map color from light yellow to red over time. The figure on the right is 365 ppm (ppm) in 2002.

Picture source:NASA https://www.nasa.gov/ 

02.

Change of CO2 over time

The 2022 content > 400 ppm (ppm) measurements come from the mid-troposphere, the Earth's atmosphere 8 to 12 km above Earth.

Picture source:NASA https://www.nasa.gov/ 

Net zero

Net zero means reducing greenhouse gas emissions to as close to zero as possible, while any remaining emissions are reabsorbed from the atmosphere, for example by oceans and forests. 

Current national climate plans (195 parties to the Paris Agreement combined) would result in a substantial increase of nearly 9% in global greenhouse gas emissions in 2030 compared to 2010 levels. In order to limit global warming to 1.5°C, as required by the Paris Agreement, emissions need to be reduced by 45% by 2030 and reach net zero emissions by 2050.

Data source:United Nations