Are O2 Levels in the Lower Atmosphere Decreasing?

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SUMMARY

Oxygen (O2) levels in the lower atmosphere are a topic of concern, with discussions suggesting a potential decrease linked to rising carbon dioxide (CO2) levels. The conversation highlights the correlation between increased CO2 concentrations and worsening allergies, while personal experiences indicate noticeable differences in air quality between valleys and mountains. Despite CO2 levels rising by 100 ppm (0.01%), detecting a corresponding change in O2 levels remains challenging due to the minuscule nature of the variation.

PREREQUISITES
  • Understanding of atmospheric chemistry
  • Knowledge of gas concentration measurements
  • Familiarity with the impact of CO2 on air quality
  • Basic principles of respiratory physiology
NEXT STEPS
  • Research the effects of CO2 on atmospheric oxygen levels
  • Explore methods for measuring O2 concentration in various environments
  • Investigate the relationship between air quality and respiratory health
  • Learn about climate change impacts on atmospheric composition
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Environmental scientists, health professionals, and anyone interested in the effects of atmospheric changes on air quality and human health.

nuby
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Are O2 levels dropping in our atmosphere? I read something a while ago that mentioned allergies are getting worse due to increasing CO2 levels in atmosphere, so I'm guessing O2 levels are dropping as well. I was in the mountains a week ago (out of a valley), and noticed how easier it is to breath probably due to increased O2 concentrations. But the difference between breathing valley air, and mountain air seems to be getting bigger.
 
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CO2 has 'only' gone up by 100ppm (0.01%) so even if it did you would have a job detecting a change of 0.01% in the amount of oxygen.
 

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