Discover and read the best of Twitter Threads about #BeAirAware

Most recents (2)

1/ During July 2020 many worked quickly to scramble #COVID19 prep before the Fall classes. I helped model estimated COVID #aerosol risk as @UofDenver made plans. Not allowed then, but shared now in case it can prompt discussion for Winter prep.

Doc + 🧵:
bit.ly/3gVfMcu
2/ A key concern at the time (& still) was #music ensemble classroom activities, b/c it was obvious early on that #COVIDisAirborne and that #choir & wind instruments were likely to present high COVID #aerosol risk.

nfhs.org/articles/unpre…
3/ Using my version of an aerosol #boxmodel, I calculated probability that #SARSCoV2 could infect after breathed out by someone in specific classrooms. With this I could easily investigate best prevention bang for buck. I.e. Rehearsal duration? Wait time b/n classes? Etc.
Read 20 tweets
1/ A 🧵 on some #CO2 measurements in my home, car, school *AND* details/instruction on how to use dry ice for DIY estimate of #ventilation rates at your home or as a school project.

Highlights in thread & gathered together in the linked doc 👇. #COVIDCO2
docs.google.com/presentation/d…
2/ Lots of good resources on using #CO2 as a rough measurement of #ventilation rates in your house, car, school, business. I.e. if CO2 < 800 ppm, generally fresher air, better ventilation. If CO2 rises, so does #COVID aerosol risk b/c of poor ventilation.
3/ #CO2 Example 1: Poorly ventilated minivan

Serendipitous obs of *really* high CO2 (4000+ ppm) w/ 2 adults/3 kids in car. Then one is #carsick & we crack 2 windows ~1”; CO2 drops immediately to ~750!

Interestingly, drive home had a) much lower CO2 & b) freshly cut tree in car! Image
Read 18 tweets

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