[kibitzor]

Related reading "I’m living in a carbon bubble. Literally."[0] which has a lot of great basic charts and graphs on everyday data related to CO2. Information in this reading that is relevant to 4000 PPM on the Space Station

  -Typical CO2 concentrations can reach 4000 ppm in a car
  -"On the International Space Station, the odds of a crew member reporting a headache double for every 1300 ppm increase in CO2 concentration [Law 2014]."
  -Nearly every cognitive function go "down" in score when CO2 PPM levels go from 1k to 2.5k. The exceptions are Focused Activity Cognitive Score goes UP and information search stays about the same. Not shown are effects over 2.5k. 

Important to note the Space Station is at a different pressure and has no gravitational effects on airflow compared to where many of the studies were done on Earth.

I do not work nor have studied in a CO2 related field but gained a fascination with how we overlook it in daily life (like many here) and have since purchased CO2 measuring devices and read various studies. I think missing from my notes here is a link to NASA done research on the effects of CO2 on astronauts on the space station.

[0]https://medium.com/@joeljean/im-living-in-a-carbon-bubble-li...

[marko_oktabyr]

NASA’s Office of the Chief Heath and Medical Officer has published a number of technical briefs [0] that cover a variety of human spaceflight related risks and topics. In particular, they have one for carbon dioxide [1, PDF warning] with some references that may interest you.

[0]: https://www.nasa.gov/ochmo/health-operations-and-oversight/h... [1]: https://www.nasa.gov/wp-content/uploads/2023/12/ochmo-tb-004...