Are O2 Levels in the Lower Atmosphere Decreasing?

[nuby]

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.

 

[mgb_phys]

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.

 

[oswaler]

I can provide some insight on this topic. While there is ongoing research on the levels of oxygen (O2) in our atmosphere, current data shows that there has been a slight decrease in O2 levels over the past few decades. However, this decrease is not significant enough to cause noticeable differences in breathing between valley and mountain air.

It is important to note that while CO2 levels have been increasing in our atmosphere, it does not directly affect the levels of O2. CO2 is a greenhouse gas that contributes to climate change, but O2 is produced through photosynthesis by plants and is not affected by CO2 levels.

The slight decrease in O2 levels is likely due to natural fluctuations and changes in the Earth's atmosphere, and is not a cause for concern at this time. There is no evidence to suggest that allergies are getting worse due to decreasing O2 levels. Allergies are typically caused by exposure to allergens, not the concentration of oxygen in the air.

Additionally, the difference in breathing between valley and mountain air is more likely due to altitude and air pressure, rather than differences in O2 levels. At higher altitudes, there is less atmospheric pressure which can make it feel like there is more oxygen in the air. However, the actual concentration of oxygen remains the same.

In conclusion, while there has been a slight decrease in O2 levels in our atmosphere, it is not a cause for concern and is not directly related to allergies or the difference in breathing between valley and mountain air. Ongoing research will continue to monitor and study the levels of oxygen in our atmosphere.

 

[quicknote]

I can confirm that there is no evidence to suggest that oxygen (O2) levels in our lower atmosphere are decreasing. In fact, O2 levels have remained relatively stable over the past few decades, with only minor fluctuations. The perception of easier breathing in the mountains is likely due to the lower air pressure at higher altitudes, rather than an increase in O2 levels.

It is also important to note that allergies are caused by a variety of factors, and while increasing levels of carbon dioxide (CO2) in the atmosphere may contribute to certain types of allergies, it is not the sole cause. Furthermore, the effects of CO2 on allergies are still being studied and are not yet fully understood.

Overall, while it is important to monitor and address changes in our atmosphere, there is currently no cause for concern regarding O2 levels in the lower atmosphere. As scientists continue to study and understand the complexities of our atmosphere, we can work towards finding solutions to any potential issues that may arise.