[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Atmosphere at K-T extinctions
> If oxygen concentration went up, something(s)
> else decreased.
No, CO2 was at about 5 times present levels, and nitrogen was unchanged.
was or is present in high enough quantities to be meaningful. No decrease in
gases just means atmospheric density was up too, though the increased
have acted to increase the density altitude and offset the effect somewhat. As
aside, I looked density altitude when I started working on Quetzalcoatlus flight
mechanics, and decided the data was too iffy to bother using anything other
present atmosphere. I just do my calculations using indicated airspeed rather
airspeed. The difference in atmospheric density wasn't really enough to affect
flightworthiness anyway. Anything that could have flown then, could fly now.