The Paris Agreement adopted a target for global warming not to exceed 1.5°C. This sets a limit on the additional carbon we can add to the atmosphere – the carbon budget. Only 18% of the carbon budget is now left. That is about 10 years at current emission rates.
Each country reports its annual greenhouse gas emissions to the United Nations. Scientists then set these emissions against estimates of the carbon absorbed by Earth’s natural carbon sinks. This is known as the bottom-up approach to calculating the carbon budget.
Another way to track carbon sources and sinks is to measure the amounts of greenhouse gases in the atmosphere from space – the top-down approach. As well as tracking atmospheric carbon, ESA’s Climate Change Initiative is using satellite observations to track other carbon stocks on land and sea.
How we use the land accounts for about a quarter of our greenhouse gas emissions. Forests are the largest store of carbon on the land. Fire acts as a conduit for carbon to pass from the land to the atmosphere. And
phytoplankton in the ocean is an important carbon sink.
ESA’s RECCAP-2 project is using this information to reconcile the differences between the bottom-up and top-down approaches. Observations are combined with atmospheric and biophysical computer models to deduce carbon fluxes at the surface. This will improve the precision of each greenhouse gas budget and help separate natural fluxes from agricultural and fossil fuel emissions. This work will help us gauge whether we can stay within the 1.5°C carbon budget, or if more warming is in store.
Credits: ESA/Planetary Visions
★ Subscribe: http://bit.ly/ESAsubscribe and click twice on the bell button to receive our notifications.
Check out our full video catalog: http://bit.ly/SpaceInVideos
Follow us on Twitter: http://bit.ly/ESAonTwitter
On Facebook: http://bit.ly/ESAonFacebook
On Instagram: http://bit.ly/ESAonInstagram
On Flickr: http://bit.ly/ESAonFlickr
We are Europe’s gateway to space. Our mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world. Check out https://www.esa.int/ to get up to speed on everything space related.
Copyright information about our videos is available here: https://www.esa.int/ESA_Multimedia/Terms_and_Conditions
Carbon dioxide ocean–atmosphere exchange
Carbon Observing Mission Launches on This Week @NASA
Has COVID Affected Climate Change? – We Asked a NASA Scientist
Oceans and climate
We are sorry that this post was not useful for you!
Let us improve this post!
Tell us how we can improve this post?