
Where do carbon emissions numbers come from? And how do we know they’re accurate? Get a 30 day free trial to Brilliant here: https://www.brilliant.org/simonclark
While filming another video, I learned about a fascinating technique used to estimate our carbon emissions, and is used by governments around the world to validate their emission figures, and specifically their emission reductions. Many thanks to Dr Clement Albergel at the European Space Agency’s climate office for helping with this video!
Previous video on satellite bias: https://youtu.be/1eKfxLrUMTM
REFERENCES
1. https://ourworldindata.org/grapher/annual-co-emissions-by-region
2. https://keelingcurve.ucsd.edu/
3. https://ocov2.jpl.nasa.gov/
4. https://earth.esa.int/eogateway/instruments/sciamachy
5. https://en.wikipedia.org/wiki/Space-based_measurements_of_carbon_dioxide
6. https://youtu.be/lSNXvd5VVLU?si=NKIXr4rZt9Mcj-x0
7. https://svs.gsfc.nasa.gov/5110
8. https://www.worldometers.info/co2-emissions/co2-emissions-by-country/
9. https://naei.beis.gov.uk/
10. https://www.gov.uk/government/collections/road-transport-consumption-at-regional-and-local-level
You can support the channel by becoming a patron at http://www.patreon.com/simonoxfphys
———- II ———-
More about me https://www.simonoxfphys.com/
My second channel – https://www.youtube.com/simonclarkerrata
Twitter – https://www.twitter.com/simonoxfphys
Threads – https://www.threads.net/@simonoxfphys
Insta – https://www.instagram.com/simonoxfphys
Twitch – https://www.twitch.tv/drsimonclark
———- II ———-
Music by Epidemic Sound: http://nebula.tv/epidemic
Some stock footage courtesy of Getty.
Edited by Luke Negus.
How do we know what our carbon emissions are? Where does carbon emission data come from? In this video I talk to the European Space Agency’s climate office about how they use satellites to monitor carbon emissions from space, and how satellites can improve how we estimate carbon emissions on the ground.
Huge thanks to my supporters on Patreon: Piet Braat, Glen Monks, Artem, Sylvus , Florian Thie, Daniel Chen, Gary Stark, Martina Alini, Vernon Swanepoel, Adam Scott, Felix Winkler, CC, Thomas Charbonnel, Mark Moore, Philipp Legner, Zoey O’Neill, Heijde, Paul H and Linda L, Marcus Bosshard, Dan Sherman, Matthew Powell, Adrian Sand, Dan Nelson, The Cairene on Caffeine, Cody VanZandt, Igor Francetic, Daniel Irwin, bitreign33, Thusto , Andy Hartley, Lachlan Woods, Dan Hanvey, Andrea De Mezzo.
Ilan Henzler, Mark Thomlinson, Dan Lilley, Tristan Schefke, Theo coz 1-letter-name invites ridicule, Gunnstein Lye, Trevor Scheuing, Andy Giesen, Tingus Pingus from Lativia, Mathias Hüttenmüller, RomanConsul, Ave Jonathan Cahyadi, John Bate, Cifer, Chris Conrey, Christian Weckner, Quinn Sinclair, Frida Sørensen, Ned Funnell, Aleksa Stankovic, Meagan, Indira Pranabudi, Sekhalis, Chaotic Brain Person, Simon H., Ben Cooper, Mark Injerd, dryfrog, Justin Warren, Angela Flierman, Alipasha Sadri, Calum Storey, Mattophobia, Riz, The Confusled, Simon Stelling, Gabriele Siino, Bjorn Bakker, Ieuan Williams, Tom Malcolm, GordonV47, Leonard Neamtu, Brady Johnston, Louise K., Rapssack, Kevin O’Connor, Timo Kerremans, Thomas Rintoul, Lars Hubacher, Ashley Wilkins, Samuel Baumgartner, ST0RMW1NG 1, Morten Engsvang, Cio Cio San, Farsight101, Haris Karimjee, K.L, fourthdwarf, Stormchaser007 , Sam Ryan, Felix Freiberger, Chris Field, Kolbrandr, Vinni, Shane O’Brien, Alex, Jesper Koed, Jonathan Craske, Albrecht Striffler, Jack Troup, Sven Ebel, Sean Richards, Peter Reid, Kedar , Alastair Fortune, Mat Allen, Krisztián Török, Colin J. Brown, Mach_D, Keegan Amrine, Simon Donkers, Kodzo , James Bridges, Liam , Wendover Productions, Kendra Johnson.
https://www.youtube.com/watch?v=AfKqiadS3TE
Climate Change Videos
How airlines can halve their climate impact

See how much you can rinse Nebula in 3 days: https://go.nebula.tv/simonclark
For many of us in the West, aviation is a huge chunk of our climate impact, and most of the impact of any given flight doesn’t even come from its carbon emissions. Fortunately, new analysis and field tests indicate that this impact can be mitigated quickly, cheaply, and safely.
If you wanted a message to send to your airline, perhaps something like the following?
“Hello [AIRLINE], I am one of your customers. Do you incorporate contrail avoidance into your flight routing or are you planning to take part in one of the many trials in contrail avoidance? Here’s a website explaining how easy and effective it is: contrails.org”.
REFERENCES
1. https://ourworldindata.org/grapher/carbon-footprint-travel-mode
2. https://www.bbc.co.uk/news/blogs-trending-62240071
3. https://iopscience.iop.org/article/10.1088/2634-4505/ad310c
4. https://pubs.acs.org/doi/abs/10.1021/acs.est.9b05608
5. https://notebook.contrails.org/the-cost-of-contrail-management/
6. https://www.theccc.org.uk/publication/the-seventh-carbon-budget/
7. https://www.iata.org/en/iata-repository/pressroom/fact-sheets/fact-sheet—alternative-fuels/
8. http://contrails.org/
9. http://map.contrails.org/
You can support the channel by becoming a patron at http://www.patreon.com/simonoxfphys
———- II ———-
More about me – https://www.simonoxfphys.com/
My second channel – https://www.youtube.com/simonclarkerrata
My book – https://geni.us/firmament
Bluesky – https://bsky.app/profile/simonoxfphys.com
Instagram – https://www.instagram.com/simonoxfphys
Twitch – https://www.twitch.tv/drsimonclark
———- II ———-
Music by Epidemic Sound: http://nebula.tv/epidemic
Some stock footage courtesy of Getty.
Edited by Luke Negus.
Research by Ian Campbell.
Huge thanks to my supporters on Patreon:
bitreign33 , Dave Teare, Eric A Gentzler, Gary Stark, Glen Monks, Marcus Bosshard.
Andy Hartley, Artem Plotnikov, Bastian Pranzas, Ben Curtis, Jeffry ., Jon Arlov, Marius Kießling, Paul H and Linda L, Peter Reid.
Adam Gillard, Adrian Sand, Alex, Alex Hall, Andrea De Mezzo, Andy Giesen, Andy Parr, Anže Cesar, Ashley Hauck, Ashley Steel, AYS , Baerbel Winkler, Bill Keydel, Brian Moss, Chris Laslett, Christian Weckner, Christopher Hall, Cifer, Ciotka Cierpienia, Circuitrinos, Claudia Kapp, Clemens, Cody VanZandt, Crisan Talpes, Cy ‘kkm’ K’Nelson, Dan Hanvey, Daniel Cooney, David Mccann, David Stone, Denis Kovachev, Diederik Jekel, Dominik Rihak, Duffman, FireFerretDann, flakykilowatt, Florian Thie, Forever Bulking, Fred, Gabriele Siino, GGH, Guy Markey, Hannarrrr, Haris Karimjee, Heijde, I dropped out of my PhD, & I might forgive Simon., Ian Hamilton, Igor Francetic, Ishaan Shah, j51t, Jack Fretwell, Jacob Speelman, James Gaskell, James Gurney, James Haigh, James Leadbetter, Jan-Willem Goedmakers, Jean-Manuel Izaret, John, Josef Probst, Joseph , Justin Warren, Katharina Hartmuth, Kevin B, Kirsten Athome, KJ Xiao, Knut Nesheim, Kristopher Sicari, Lach Woods, Leonard Neamtu, Marcin Wrochna, Mark Harper, Mark Moore, Mark Phillips, Mark Richardson, Martin, Matthew H, Mercure, Michael Belde, Michelle Valentinova, Miguel Cabrera Brufau, Mike, Morten Engsvang, Nathan Rohrlach, Nicholas Hamdorf, Nick Humphries, Nicklas Kulp, Nico Casal, Nico Kempe, OldGreyWolf, Oliver Pelling-Matthews, Pawel Piwek, Peter Lee, Phil Saici, Philipp Legner, Phineas, Rapssack, Real Engineering, Reid, Richard Swain, Ryan, Sean Richards, Seb Stott, Sergio Diaz, Simone, Steffan , streetlights, Sylvus , szigyi, Tanner , Ted CLAY, Thibault , Thomas Charbonnel, Thomas Newman, Thusto , Tobias Ahsbahs, Tom Painter, Tomás Garnier Artiñano, Tony, Tschäff Reisberg, Victor Gordan, Yorick Droz, Zoey O’Neill.
https://www.youtube.com/watch?v=QoOVqQ5sa08
Climate Change Videos
Al Gore just said the quiet part out loud

Watch this video on Nebula ad-free and get 50% an annual subscription at https://go.nebula.tv/simonclark
Now the dust has settled, it’s time to talk about COP30. Good COP? Or bad COP?
You can support the channel by becoming a patron at http://www.patreon.com/simonoxfphys
———- II ———-
More about me – https://www.simonoxfphys.com/
My second channel – https://www.youtube.com/simonclarkerrata
My book – https://geni.us/firmament
Bluesky – https://bsky.app/profile/simonoxfphys.com
Instagram – https://www.instagram.com/simonoxfphys
Twitch – https://www.twitch.tv/drsimonclark
———- II ———-
Music by Epidemic Sound: http://nebula.tv/epidemic
Some stock footage courtesy of Getty.
Edited by Luke Negus.
Research by Ian Campbell.
Huge thanks to my supporters on Patreon:
bitreign33 , Dave Teare, Eric A Gentzler, Gary Stark, Glen Monks, Marcus Bosshard.
Andy Hartley, Artem Plotnikov, Bastian Pranzas, Ben Curtis, Jeffry ., Jon Arlov, Marius Kießling, Paul H and Linda L, Peter Reid.
Adam Gillard, Adrian Sand, Alex, Alex Hall, Andrea De Mezzo, Andy Giesen, Andy Parr, Anže Cesar, Ashley Hauck, Ashley Steel, AYS , Baerbel Winkler, Bill Keydel, Brian Moss, Chris Laslett, Christian Weckner, Christopher Hall, Cifer, Ciotka Cierpienia, Circuitrinos, Claudia Kapp, Clemens, Cody VanZandt, Crisan Talpes, Cy ‘kkm’ K’Nelson, Dan Hanvey, Daniel Cooney, David Mccann, David Stone, Denis Kovachev, Diederik Jekel, Dominik Rihak, Duffman, FireFerretDann, flakykilowatt, Florian Thie, Forever Bulking, Fred, Gabriele Siino, GGH, Guy Markey, Hannarrrr, Haris Karimjee, Heijde, I dropped out of my PhD, & I might forgive Simon., Ian Hamilton, Igor Francetic, Ishaan Shah, j51t, Jack Fretwell, Jacob Speelman, James Gaskell, James Gurney, James Haigh, James Leadbetter, Jan-Willem Goedmakers, Jean-Manuel Izaret, John, Josef Probst, Joseph , Justin Warren, Katharina Hartmuth, Kevin B, Kirsten Athome, KJ Xiao, Knut Nesheim, Kristopher Sicari, Lach Woods, Leonard Neamtu, Marcin Wrochna, Mark Harper, Mark Moore, Mark Phillips, Mark Richardson, Martin, Matthew H, Mercure, Michael Belde, Michelle Valentinova, Miguel Cabrera Brufau, Mike, Morten Engsvang, Nathan Rohrlach, Nicholas Hamdorf, Nick Humphries, Nicklas Kulp, Nico Casal, Nico Kempe, OldGreyWolf, Oliver Pelling-Matthews, Pawel Piwek, Peter Lee, Phil Saici, Philipp Legner, Phineas, Rapssack, Real Engineering, Reid, Richard Swain, Ryan, Sean Richards, Seb Stott, Sergio Diaz, Simone, Steffan , streetlights, Sylvus , szigyi, Tanner , Ted CLAY, Thibault , Thomas Charbonnel, Thomas Newman, Thusto , Tobias Ahsbahs, Tom Painter, Tomás Garnier Artiñano, Tony, Tschäff Reisberg, Victor Gordan, Yorick Droz, Zoey O’Neill.
https://www.youtube.com/watch?v=loTNEhca8wQ
Climate Change Videos
The worst month of climate news in my entire career

Want to restore the planet’s ecosystems and see your impact in monthly videos? The first 100 people to join Planet Wild with my code SIMON10 will get the first month for free at: https://planetwild.com/r/simonclark/join
If you want to get to know them better first, check out their project using beehive fences to protect elephants and humans: https://planetwild.com/r/simonclark/m10
This month has been really tough. Let’s talk about why, and how we talk about climate in general. Oh, and how I’ve been staying sane. (?)
My monthly newsletter: https://www.simonoxfphys.com/newsletter
You can support the channel by becoming a patron at http://www.patreon.com/simonoxfphys
REFERENCES
1. https://apnews.com/article/climate-change-greenhouse-gases-wmo-un-708c3d35ce6fc3d3bcaccafdba6bba45
2. https://www.theguardian.com/environment/2025/oct/15/record-leap-in-co2-fuels-fears-of-accelerating-global-heating
3. https://www.theguardian.com/environment/2025/oct/28/change-course-now-humanity-has-missed-15c-climate-target-says-un-head
4. https://files.wri.org/d8/s3fs-public/2025-10/state-of-climate-action-2025.pdf
5. https://openknowledge.fao.org/items/090d2fbb-32a6-412b-a3b8-1ce5c5905df2
6. https://www.reuters.com/sustainability/cop/super-warming-methane-gas-is-being-tackled-too-slowly-un-says-ahead-cop30-2025-10-22/
7. https://global-tipping-points.org/about-us/
8. https://livingplanet.panda.org/en-GB/
9. https://www.thetimes.com/business-money/companies/article/global-banking-climate-group-collapses-after-us-policy-shift-q6szfdjkh
———- II ———-
More about me – https://www.simonoxfphys.com/
My second channel – https://www.youtube.com/simonclarkerrata
My book – https://geni.us/firmament
Bluesky – https://bsky.app/profile/simonoxfphys.com
Instagram – https://www.instagram.com/simonoxfphys
Twitch – https://www.twitch.tv/drsimonclark
———- II ———-
Music by Epidemic Sound: http://nebula.tv/epidemic
Some stock footage courtesy of Getty.
Edited by Luke Negus.
Huge thanks to my supporters on Patreon:
bitreign33 , Dave Teare, dryfrog, Eric A Gentzler, Gary Stark, Glen Monks, Marcus Bosshard.
Andy Hartley, Artem Plotnikov, Bastian Pranzas, Jeffry ., Jon Arlov, Marius Kießling, Paul H and Linda L, Peter Reid.
Adam Gillard, Adrian Sand, Alex, Alex Hall, Andrea De Mezzo, Andy Giesen, Andy Parr, Anže Cesar, Ashley Hauck, Ashley Steel, AYS , Baerbel Winkler, Bill Keydel, Brian Moss, Chris Laslett, Christian Weckner, Christopher Hall, Cifer, Ciotka Cierpienia, Circuitrinos, Claudia Kapp, Clemens, Cody VanZandt, Crisan Talpes, Cy ‘kkm’ K’Nelson, Dan Hanvey, Daniel Cooney, David Mccann, David Stone, Denis Kovachev, Diederik Jekel, Dominik Rihak, Duffman, FireFerretDann, flakykilowatt, Florian Thie, Fred, Gabriele Siino, GGH, Hannarrrr, Haris Karimjee, Heijde, I dropped out of my PhD, & I might forgive Simon., Ian Hamilton, Igor Francetic, Ishaan Shah, j51t, Jacob Speelman, James Gaskell, James Gurney, James Haigh, James Leadbetter, Jan-Willem Goedmakers, Jean-Manuel Izaret, John, Josef Probst, Joseph , Justin Warren, Katharina Hartmuth, Kevin B, Kirsten Athome, KJ Xiao, Knut Nesheim, Kristopher Sicari, Lach Woods, Leonard Neamtu, Marcin Wrochna, Mark Harper, Mark Moore, Mark Phillips, Mark Richardson, Martin, Mercure, Michael Belde, Michelle Valentinova, Miguel Cabrera Brufau, Mike, Morten Engsvang, Nathan Rohrlach, Nicholas Hamdorf, Nick Humphries, Nicklas Kulp, Nico Casal, Nico Kempe, OldGreyWolf, Pawel Piwek, Peter Lee, Phil Saici, Philipp Legner, Phineas, Rapssack, Real Engineering, Reid, Richard Swain, Ryan, Sean Richards, Seb Stott, Sergio Diaz, Simone, Steffan , streetlights, Sylvus , szigyi, Tanner , Ted CLAY, Thibault , Thomas Charbonnel, Thomas Newman, Thusto , Tobias Ahsbahs, Tom Painter, Tomás Garnier Artiñano, Tschäff Reisberg, Victor Gordan, Yorick Droz, Zoey O’Neill.
https://www.youtube.com/watch?v=4zBoXY5YeVo
-
Greenhouse Gases5 months ago
Guest post: Why China is still building new coal – and when it might stop
-
Climate Change5 months ago
Guest post: Why China is still building new coal – and when it might stop
-
Climate Change2 years ago
Spanish-language misinformation on renewable energy spreads online, report shows
-
Greenhouse Gases2 years ago嘉宾来稿:满足中国增长的用电需求 光伏加储能“比新建煤电更实惠”
-
Climate Change Videos2 years ago
The toxic gas flares fuelling Nigeria’s climate change – BBC News
-
Climate Change2 years ago嘉宾来稿:满足中国增长的用电需求 光伏加储能“比新建煤电更实惠”
-
Carbon Footprint2 years agoUS SEC’s Climate Disclosure Rules Spur Renewed Interest in Carbon Credits
-
Renewable Energy6 months ago
US Grid Strain, Possible Allete Sale
