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I recently bought one of these air quality monitors and got to take it out for some measurements!

I'll share some findings in this thread.

CCing @CO2Guerrillas here, in case they would like to share.


A very quick intro:

This device measures:

-CO2 concentration
-relative humidity
-atmospheric pressure
-temperature

I spent ~$200 on Amazon. It pairs with your phone and you can watch data come in every minute or so.

https://t.co/aoXjyq8kdu


A lot of covid transmission is airborne. So, having clean air is a must for reducing transmission.

A great way to see how much clean air you are getting is to measure CO2 concentration.

Too high -> you could use more ventilation -> open some windows!


So, I walked around town and took some measurements.

Outdoor CO2 concentration should be about 400 ppm. I haven't calibrated my device yet, so I measured ~470. Close enough.

<800 is good for indoors. Something like 2000 is very bad.

https://t.co/oZAkVnr9ts


For a reference: inside my apartment I quickly get ~1000 ppm if I don't have windows open. Maybe ~1500 if things get bad.

If I crack some windows, even just barely, it gets down to ~600 ppm very quickly, and my heater can keep the apartment ~70 F no problem.
Well, we’re between coup attempts and attempts to throw out a seditionist president, so I’m going to take the opportunity to describe this research that was recently accepted in @SERestoration for the grassland ecology SF.


Led by @Blackburn_RC and in collaboration with @barberecology and others not on the Twitters, this work was from Ryan’s MSc research @NIULive. I say research and not thesis, dear reader, bc it didn’t make it into his thesis.

Truth be told, this was an epic battle of computer vs researcher and many times, it felt like computer won. I encourage students in my lab pick a risky part and less risky part of their research. Drone imagery was Ryan’s risky part.


As sometimes happens w the risky part, this one didn't go in the thesis, but Ryan persevered to get it published nonetheless.

More times than not, in fact, it felt like the drone work went like this: